The brain is the most active organ in the body and therefore very sensitive to daily stresses. Getting the right amount of exercise, proper nutrition, cognitive stimulation and adequate sleep enhances brain structure and function throughout our lives.
Great minds over the ages have known that physical activity is necessary to keep the mind strong and clear. Aerobic exercise improves cognitive function in humans, produces increases in brain volume, stimulates neurogenesis and synaptogenesis, and increases neurotrophic factors in different areas of the brain. Physical exercise may protect the brain against reduction in cognitive functions in the elderly and delay the onset and slow down the progression of Alzheimer disease.
The loss of strength, cognitive function and stamina attributed to aging is in part caused by reduced physical activity. Inactivity increases with age. By age 75, about 1 in 3 men and 1 in 2 women engage in no physical activity. Among adults aged 65 years and older, walking and gardening or yard work are, by far, the most popular physical activities. Social support from family and friends has been consistently and positively related to regular physical activity.
Older adults should consult with a physician before beginning a new physical activity program. Physical activity need not be strenuous to achieve health benefits. Older adults can obtain significant health benefits with a moderate amount of physical activity, preferably daily. A moderate amount of activity can be obtained in longer sessions of moderately intense activities (such as walking) or in shorter sessions of more vigorous activities (such as fast walking or stair climbing). Additional health benefits can be gained through greater amounts of physical activity, by increasing the duration, intensity, or frequency. Because risk of injury increases at high levels of physical activity, care should be taken not to engage in excessive amounts of activity. Previously sedentary older adults who begin physical activity programs should start with short intervals of moderate physical activity (5-10 minutes) and gradually build up to the desired amount. In addition to aerobic activity, older adults can benefit from muscle-strengthening activities. Stronger muscles help reduce the risk of falling and improve the ability to perform the routine tasks of daily life.
This presentation provides a current summary of the human research on aerobic activity and cognitive function in seniors.
Mark Dreher PhD
There is a chance you are already aware of the importance of Exercise and ‘staying fit’ for keeping your weight in control. But the benefits of exercise are far more than this!
Sports nutrition is important aspect of training for an athlete. Adequate amount of nutrients ensure effective performance. We have end number of types of games and sports, the diet and nutritional requirements vary as per the activity demand and other details. Read this presentation to Know more.
There is a chance you are already aware of the importance of Exercise and ‘staying fit’ for keeping your weight in control. But the benefits of exercise are far more than this!
Sports nutrition is important aspect of training for an athlete. Adequate amount of nutrients ensure effective performance. We have end number of types of games and sports, the diet and nutritional requirements vary as per the activity demand and other details. Read this presentation to Know more.
Jobfit Health Group provides occupational healthcare and workplace health solutions for business and industry across Australia.
Our healthcare professionals can provide your workforce with group or individual health and wellness sessions, assisting with improvement in productivity and reduced absences.
This presentation provides information about nutrition and weight management.
Email us info@jobfit.com.au for more information.
Easy to digest information on the importance of hydration in sport, the physiological effects of dehydration on performance, the role of sports drinks as an ergogenic aid!
The importance of physical fitness cannot be emphasized enough. In today’s society that is moving towards a more sedentary lifestyle, there is a greater need than ever to increase the daily activity level to maintain both cardiovascular fitness and body weight.
http://line5studios.com
Effects of Exercise on Cardiovascular SystemAdam Sturm
The benefits of regular exercise include more than just having a well-toned body. Besides serving as a mood intensifier, physical activity has both long term and short term effects on the cardiovascular system. Good blood circulation throughout your body may provide long standing positive effects to your health. Giving your body a temperate workout for 30 minutes at least 5 days a week may help mitigate the chance of developing many heart-related diseases.
Teenage years are more crucial in terms of both physical and mental development. The fitness habits a teenager develops are likely to last a lifetime. Recent studies have shown that exercise can be beneficial to a teen's overall health while enhancing a positive body image.
Jobfit Health Group provides occupational healthcare and workplace health solutions for business and industry across Australia.
Our healthcare professionals can provide your workforce with group or individual health and wellness sessions, assisting with improvement in productivity and reduced absences.
This presentation provides information about nutrition and weight management.
Email us info@jobfit.com.au for more information.
Easy to digest information on the importance of hydration in sport, the physiological effects of dehydration on performance, the role of sports drinks as an ergogenic aid!
The importance of physical fitness cannot be emphasized enough. In today’s society that is moving towards a more sedentary lifestyle, there is a greater need than ever to increase the daily activity level to maintain both cardiovascular fitness and body weight.
http://line5studios.com
Effects of Exercise on Cardiovascular SystemAdam Sturm
The benefits of regular exercise include more than just having a well-toned body. Besides serving as a mood intensifier, physical activity has both long term and short term effects on the cardiovascular system. Good blood circulation throughout your body may provide long standing positive effects to your health. Giving your body a temperate workout for 30 minutes at least 5 days a week may help mitigate the chance of developing many heart-related diseases.
Teenage years are more crucial in terms of both physical and mental development. The fitness habits a teenager develops are likely to last a lifetime. Recent studies have shown that exercise can be beneficial to a teen's overall health while enhancing a positive body image.
Raymond J. Baxter, PhD, senior vice president, Community Benefit, Research and Health Policy at Kaiser Permanente presents a keynote address at the Forum for Healthy Behavior Change in Washington, D.C. on May 16, 2013.
Dr. Baxter addresses the need to create systematic changes that eventually become habits, to encourage healthy behavior change and combat the obesity epidemic.
The brain is the most active organ in the body and therefore very sensitive to daily stresses. Getting the right amount of exercise, proper nutrition, cognitive stimulation and adequate sleep enhances brain structure and function throughout our lives.
Great minds over the ages have known that physical activity is necessary to keep the mind strong and clear. Aerobic exercise improves cognitive function in humans, produces increases in brain volume, stimulates neurogenesis and synaptogenesis, and increases neurotrophic factors in different areas of the brain. Physical exercise may protect the brain against reduction in cognitive functions in the elderly and delay the onset and slow down the progression of Alzheimer disease.
Unfortunately, physical activity has declined as sedentary behaviors are more common in industrialized society. Sedentary lifestyles are associated with increased obesity rates, type 2 diabetes and other disorders including an increasing rate of cognitive decline with aging. Developing a regular physical activity habit is one the greatest challenges in the field of health promotion.
The activity requirements for a healthy brain and cognitive function are really relatively modest. For adults, moderate aerobic activity of 2 hours and 30 minutes (total 150 minutes) per week or 30 minutes a day for 5 days a week can change your brain for the better.
There is work to be done in the United States and other countries to meet these activity goals as less than half of adults achieve their fitness goals.
This presentation provides a current summary of the human research on aerobic activity and cognitive function in adults.
Mark Dreher PhD
Postural Assessment and Body Mechanics approach to selection of exercise makes movement more beneficial and less likely to cause injury. A step-by-step plan not entirely different from apparently healthy populations can be applied for individuals and with planning in groups where one-on-one is not feasible. Special conditions can be overcome with careful planning.
Physical activity in people with disabilities and elderly peopleKarel Van Isacker
As presented at the International Workshop on “Qualitative Personal Caring in a European Perspective”, 07 May 2015, Antalya, Turkey
http://mcare-project.eu/
This project (M-Care - 539913-LLP-1-2013-1-TR-LEONARDO-LMP) has been funded with support from the European Commission. This website reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.
The Aging process is a broad topic. This power point hopes to help you understand the process and what can be done to help you age gracefully and positively.
SPEECH OUTLINE : INFORMATIVE SPEECH
TOPIC : HEALTHY LIFESTYLES
BY MAHFUZAH MOHD MANSOR
INTRODUCTION:
- The definition of healthy lifestyles
- Statistic about healthy lifestyles of the students
BODY:
1: Healthy Body
- What: Exercise, Physical Activity
- How: Spend time for exercise, Get enough rest, body' function.
- Benefits: Allah loves a strong believer, become energetic, less diseases.
2: Healthy Food
- What: Eating habits that are suitable for needs of the body
- How: plan in Consuming food (different people has different consume of food), taking breakfast, eat halal (lawful) food.
- Benefits: Al-Baqarah: 168, function food gives a beneficial source of health, maintain the body.
3: Healthy Mind
- What: Good thinking reflects to action
- How: good intention, use time wisely, planning our lives, Relationship with Allah
- Benefits: Gives strength, rewards by Allah.
CONCLUSION:
- Emphasizes the relationship between healthy body, food and mind.
- Good mind is in healthy body
* CCDS 2351, Class for PRESENTATION SKILLS & CRITICAL THINKING on 11th May 2013. Section 6, Semester 2, 2012/2013 with sister HANNAT TOPE AHMAD ABDUSSALAM as my trainer.
Cognitive Benefits of Exercise for Children and TeensMark Dreher PhD
The brain evolves during our childhood years as it continues to develop and is affected by lifestyle habits such as physical activity, cognitive activity, nutrition and sleep.
Although there is growing scientific evidence that exercise is associated with improved cognitive function, academic performance, and overall health in children, the limited amount of time generally dedicated to physical activity during the school day continues to decline in many schools.
The activity requirements for healthy brain and cognitive function are really relatively modest. For children, moderate aerobic activity of about 60 minutes a day can make a big difference, especially in children that are currently low-performers. There is work to be done in the United States and other countries to meet these activity goals as only about 30% of high school students achieve them.
This presentation provides a current summary of the human research on aerobic exercise and cognitive function in children and teens.
Mark Dreher PhD
Low-Intensity Exercise Improves Mental and Emotional Health for SeniorsBeth_Coleman
Regular physical activity provides advantages such as a healthier lifestyle, stronger bones, and reduced risk of diseases. However, these benefits go beyond the physical and affect one’s mental and emotional health as well, especially for older adults. Based on new studies, seniors only need 52 hours of low-intensity workouts over a span of six months to see improved brain function.
4th year medical students initiate a quality improvement project for health care providers. Be sure to visit http://wp.me/p4V1Uc-sb for the pre and post test and more information.
An update on the current research that supports the need for physical education in our schools and the importance of regular exercise in our lives. What’s good for the body IS good for the brain! Participate in brain energizers you can share with classroom teachers to keep kids engaged in the classroom.
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
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- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
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Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
New Drug Discovery and Development .....NEHA GUPTA
The "New Drug Discovery and Development" process involves the identification, design, testing, and manufacturing of novel pharmaceutical compounds with the aim of introducing new and improved treatments for various medical conditions. This comprehensive endeavor encompasses various stages, including target identification, preclinical studies, clinical trials, regulatory approval, and post-market surveillance. It involves multidisciplinary collaboration among scientists, researchers, clinicians, regulatory experts, and pharmaceutical companies to bring innovative therapies to market and address unmet medical needs.
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
MANAGEMENT OF ATRIOVENTRICULAR CONDUCTION BLOCK.pdfJim Jacob Roy
Cardiac conduction defects can occur due to various causes.
Atrioventricular conduction blocks ( AV blocks ) are classified into 3 types.
This document describes the acute management of AV block.
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
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Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
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2. “Lack of activity destroys
the good condition of
every human being, while
movement and
methodical physical
exercise save it and
preserve it.”
- Plato
“… from nothing else
but the brain come
joys, delights,
laughter and sports,
grief, despondency,
and lamentation.”
- Hippocrates
“Walking is the best
possible exercise.
Habituate yourself to
walk very fast.”
“A strong body makes
a strong mind.”
-Thomas Jefferson
“Physical fitness is not
only one of the most
important keys to a
healthy body, it is the
basis of dynamic and
creative intellectual
activity.”
“A vigorous five-mile walk
will do more good for an
unhappy but otherwise
healthy adult than all the
medicine and psychology in
the world.”
“The
Paul Dudley White
Kenneth H. Cooper
-John F Kennedy
“The Father of American Cardiology”
reason I exercise
is for the quality of
life I enjoy.”
“the Father of Aerobics”
3. Brain Facts that Need to be Respected Every Day!
Fact # 1:
Although the human brain is only 2% of the body weight, it
receives about:
- 15% of the cardiac output
- 20% of total body oxygen consumption
- 25% of total body glucose utilization
The brain is the most metabolically active organ and
therefore prone to oxidative and inflammatory stress
damage, which may deteriorate cognitive function.
Fact # 2:
The human brain is in a constant state of change such that:
- Over the lifespan new neurons may be formed while others
will die and new synapses are created while others are
eliminated.
- Brain cerebral systems are not purely hard-wired and can
be significantly influenced by many non-genetic factors such
as physical activity, cognitive activity, sleep and nutrition.
4. United States Physical Activity Report Card for Seniors
The loss of strength, cognitive function and stamina attributed to
aging is in part caused by reduced physical activity.
Inactivity increases with age. By age 75, about 1 in 3 men and 1
in 2 women engage in no physical activity.
Among adults aged 65 years and older, walking and gardening or
yard work are, by far, the most popular physical activities.
Social support from family and friends has been consistently and
positively related to regular physical activity.
http://www.cdc.gov/nccdphp/sgr/olderad.htm
5. How Much Aerobic Activity is Generally Recommended?
Older adults should consult with a physician before beginning a new physical activity
program.
Physical activity need not be strenuous to achieve health benefits. Older adults can obtain
significant health benefits with a moderate amount of physical activity, preferably daily.
A moderate amount of activity can be obtained in longer sessions of moderately intense
activities (such as walking) or in shorter sessions of more vigorous activities (such as fast
walking or stair walking).
Additional health benefits can be gained through greater amounts of physical activity, by
increasing the duration, intensity, or frequency. Because risk of injury increases at high levels
of physical activity, care should be taken not to engage in excessive amounts of activity.
Previously sedentary older adults who begin physical activity programs should start with
short intervals of moderate physical activity (5-10 minutes) and gradually build up to the
desired amount.
In addition to aerobic activity, older adults can benefit from muscle-strengthening activities.
Stronger muscles help reduce the risk of falling and improve the ability to perform the routine
tasks of daily life.
http://www.cdc.gov/nccdphp/sgr/olderad.htm
6. Regular Physical Activity Health Benefits for Seniors
Helps to reduces symptoms of anxiety and depression and fosters
improvements in mood and feelings of well-being.
Reduces risk of developing neurodegenerative diseases, high blood
pressure, colon cancer, and diabetes.
Helps maintain the ability to live independently and reduces the
risk of falling and fracturing bones.
Can help reduce blood pressure in some people with hypertension.
Helps people with chronic, disabling conditions improve their
stamina and muscle strength.
Helps maintain healthy bones, muscles, and joints.
Helps control joint swelling and pain associated with arthritis.
http://www.cdc.gov/nccdphp/sgr/olderad.htm
7. Cognitive Function Benefits Associated with Exercise for Seniors: Overview
=
Brain Mechanisms Associated with Exercise
Cerebral Blood Flow increases to
deliver more oxygen and nutrients
and remove waste products from
brain regions responsible for
learning and memory.
Neurogenesis spurs the growth of
new nerve cells in an important
brain memory center called the
hippocampus.
Angiogenesis creates new brain
blood vessels to help maintain
and expand volume in key regions
such as the hippocampus that are
associated with cognitive
function.
Neuroplasticity develops new
brain connections by promoting
changes in neural pathways and
synapses for healthy development,
learning, memory, and recovery
from brain damage.
Neuroprotection associated with
increases in the body’s natural
antioxidant defense system and
other functions to defend brain
health.
Healthy Brain Signals increase
levels of (1) brain-derived
neurotrophic factor (BDNF), a
chemical that improves brain
synapses and (2) endorphins that
promote a feeling of well-being.
Potential Benefits of Exercise
Helps to slow or reverse shrinkage of key cognitive
brain regions such as the hippocampus, important
for learning, planning, memory, reasoning and
processing speed.
Helps reduce the risk for neurodegenerative
diseases.
Helps to manage mood, anxiety and depression,
and fosters feelings of well-being.
Kirk-Sanchez and McGough. Clinical Interventions in Aging. 2014;4(9):51-62; Portugal et al. Neuropsychobiology. 2013; 68:1-4;
Mind, Mood & Memory, Combating Memory Loss. Massachusetts General Hospital. 2012
8. Exercise and Cognition Research Highlights: Older Healthy Adults (55 years and older)
In 2008, a report evaluated the effects of aerobic activity and cognition on healthy people 55+ years and concluded that the data was
insufficient to confirm the benefits of aerobic activity on cognition in older adults. Eight of these 11 studies found that aerobic exercise
improved at least one aspect of cognitive function such as speed, auditory and visual attention, but the cognitive benefits were not the
same in each study and many comparisons were insignificant. (Angevaren et al. Cochrane database of Systematic Reviews 2008;3)
Since 2008 the research focus on aerobic activity and cognitive function in older adults has increased several fold, so now the evidence
supporting the benefits of aerobic fitness and cognition is much stronger , examples of new research are summarized below:
Issue 1: Brain hippocampal volume can shrink 1–2% annually in healthy older adults, and this loss of volume increases the
risk for developing cognitive impairment:
Research shows that aerobic exercise training is effective at reversing
hippocampal volume loss in late adulthood and improving memory
function (Erickson et al. Proc Nat Acad Sci. 2011;108(7):3017-3022).
Literature indicates that aerobic fitness is associated with
healthier brain volume and white matter integrity in older adult
(Hayes et al. Frontiers in Aging Neuroscience. 2013;5(31):1-16).
Issue 2: The memory, executive function, visuospatial skills and processing speed decline in normal aging adults is likely
associated with reduced brain blood flow in key cognitive brain regions such as the frontal cortex and hippocampus:
Research suggests that aerobic exercise in
sedentary adults (57-75 years of age) can improve
cognitive/brain health. Physical activity
augmented three domains; brain function resting
regional cerebral blood flow, cognition (i.e.,
memory),and cardiovascular fitness (VO2max and
RPE). The benefits were measured after 12 weeks
of 3 x 60 minute sessions per week of aerobic
exercise. (Chapman et al. Frontiers in Aging
Neuroscience. 2013; 5(75):1-9).
Study findings show that physical activity
seniors (at the recommended levels)
attenuated the age-related declines in
aerobic fitness and cerebral blood flow
compared to sedentary seniors. These
findings highlight the importance of
maintaining aerobic fitness throughout the
lifespan given its capacity to improve
cerebral hemodynamics in later-life (Bailey
et al. Stroke. 2013; 44:3235-3238).
Study finds that when men and women (aged 62-67 years) randomly
assigned to an aerobic training sessions of 50 minutes 3-4 times a week
compared to the control (non-exercise) group, they had significantly
improved middle cerebral artery blood flow (Vicente-Campos et al. J
Sports Med Phys Fitness. 2012; 52(5):537-544).
When study participants were assigned by
stratified randomization within gender
(male or female) and age group (young:
19–39 years, middle age: 40–64 years,
older age: 65 years or older) to either the
exercise or control, the exercised adults
had a faster cognitive response time and a
lower response to less important cognitive
noise across the age spectrum (Hogan et al.
Phychol Aging. 2013;28(2):587-594).
A cross-sectional study of women (50-90 years), found that
physically fit women had higher cerebrovascular blood flow than
sedentary women. Overall cognition was positively correlated with
VO₂max., which is a predictor of higher resting cerebrovascular
blood flow (Brown et al. Neurobiol Aging. 2010;31(12):2047-57).
9. Seniors Who are More Active have a Lower Risk of Cognitive Decline
The results of observational studies support a dose-dependent neuroprotective
relationship between physical exercise and cognitive performance in older adults:
The Honolulu–Asia Aging Study followed about 2,500 men from
middle adulthood to late life for three decades to assess
changes in physical activity and onset of dementia. Those who walked less than 1 mile per day were at significantly
double the risk for developing dementia compared to men who walked more than 2 miles per day (Abbott et al. J Am Med
Assoc.. 2004;292(12):1447-1453).
The Nurses’ Health Study followed about 20,000 women (aged 70–81) for 10–15 years. The research found that women
who walked 90 minutes per week had cognitive scores significantly higher than those who walked less than 40 minutes
per week (Weuve et al. JAMA. 2004;292(12):1454-1461).
A cross-sectional study estimated the influence of exercise level on age related brain atrophy. Estimates of exercise
engagement over the previous 10 years and MRI-based measures of whole and regional brain volumes were obtained in a
sample of 52 healthy older adults aged 55 -79. Higher levels of exercise (roughly equivalent to moderate exercise for 30
minutes five times per week) resulted in larger frontal and temporal lobe brain volumes, which are key areas for memory
and executive function. In contrast, there was significant age-related atrophy observed for older adults who engaged in
low levels of exercise. Bugg and Head. Neurobiol Aging. 2011;32(3):506-514.
Cardiovascular Health Study followed about 300 older adults over 9-years. In this cohort, walking activity over a 1week period at baseline was predictive of greater gray matter volume at end of the study. A relatively long distance at
baseline (72 blocks/week) was necessary to maintain brain volume. Greater gray matter brain volume was associated
with reduced risk of cognitive impairment over the 9-year period. Erickson et al. Neurology. 2010;75(16):1415–1422.
A meta-analysis of 15 prospective cohort studies up to 2010 including in total of about 35,000 healthy adults evaluated
for 1-12 years found that subjects with a moderate level exercise were significantly protected against cognitive decline
during the follow-up by about 35%. (Sofi, et al.J Intern Med 2011; 269: 107-117).
Kirk-Sanchez and McGough. Clinical Interventions in Aging. 2014;4(9):51-62
10. Timing Required for Exercise to Show Improved
Cognitive Function Benefits
A duration of at least 16–20 weeks may be needed to
sufficiently improve aerobic fitness in older adults, and exercise
durations of 6–12 months are often needed before cognitive
changes are detected.
Exercise methods to facilitate long-term exercise participation
should be incorporated into the design of exercise programs for
older adults, such as individual exercise plans that address
physical limitations, activity preferences, and social needs.
Kirk-Sanchez, McGough. Clinical Interventions in Aging. 2014; 9:51-62
11. Case Study #1: Aerobic Exercise Increases Size of the Brain Hippocampus
Region for Improved Memory in Older Adults
Background:
As older adults age, they can experience a 1-2% hippocampus shrinkage per year.
Shrinkage of the brain’s hippocampal region precedes and leads to memory impairment in
late adulthood and increased risk for dementia.
Hippocampal and medial temporal lobe volumes are larger in higher-fit adults, and physical
activity training increases hippocampal function, but the extent to which aerobic exercise
training can modify hippocampal volume in late adulthood needs more research.
Methods:
120 older adults (mean age about 65 years) without dementia were randomly assigned to a
moderate aerobic exercise group (n = 60) or to a stretching control group (n = 60).
Magnetic resonance images were collected before the intervention, after 6 mo, and again
after 1 year.
The groups did not differ at baseline in hippocampal volume or attendance rates.
Results/Conclusions:
Aerobic exercise training increased the size of the hippocampus, leading to a better memory.
Exercise training increased hippocampal volume by 2%, effectively reversing age-related loss in volume by 1 to
2 years.
Increased hippocampal volume is associated with greater serum levels of brain-derived neurotrophic factor
(BDNF), a mediator of brain neurogenesis.
Hippocampal volume declined in the control group.
These findings indicate that aerobic exercise training can reverse hippocampal volume loss in late adulthood
and improve memory function.
Erickson, et al. Proceedings National Academy Science. 2011;108(7):3017-3022.
12. Case Study #2: Moderate Aerobic Exercise Improves Brain Health in Older
Adults with Mild Cognitive Impairment
Background:
Evidence from neuropsychological and neuroimaging studies has suggested that mild
cognitive impairment (MCI) represents a clinical risk for degenerative dementias such as
Alzheimer’s disease (AD). Several randomized controlled trials (RCTs) have been conducted
to investigate the effects of physical activity on cognitive function in older adults with MCI.
Methods:
Investigators evaluated 100 older healthy Japanese adults (mean age, 75 years) with MCI.
The subjects were randomized to either a multi-component aerobic exercise or no
exercise control group.
The moderate aerobic exercise group included 90 minutes a day sessions for 2 days a
week or 40 times for 6 months.
Results/Conclusions:
The aerobic exercise group had significantly better cognition (as measured by the Mini-Mental State
Examination) and logical memory scores, and reduced whole brain cortical shrinkage compared to the control
group.
The effects of exercise were most pronounced for logical memory and general cognitive function in older
adults with MCI.
The results suggested that a moderate level of exercise is beneficial for brain health in older adults even if
started later in life.
Suzuki, et al. PLOS ONE. 2013; 8(4):e61483.
13. Case Study #3: Moderate Aerobic Exercise Improves Cognition and Brain
Health in Older Healthy Adults
Background:
Physical exercise, particularly aerobic exercise, is documented to slow cognitive declines
including memory, executive function, visuospatial skills, and processing speed in normally
aging adults.
Aging studies have focused largely on the effects of extended (>6 months) exercise
programs.
Little is known about the cognitive and brain plasticity gains possible in healthy but
sedentary seniors from shorter term aerobic exercise training.
Methods:
37 cognitively normal adults (mean age of 64.0 [ 57–75 years of age]) were randomized
into two different groups: physical training or no training control.
The training regimen consisted of three 60 min sessions of moderate aerobic exercise
training per week for 12 weeks.
Participants’ cognitive, cardiovascular fitness and resting cerebral blood flow were
assessed at baseline, mid and post-training time points.
Results/Conclusions:
The exercise group showed cognitive gains in immediate and delayed memory performance over the course
of the 12 week training program, which was associated with a significant increase in hippocampal blood flow
compared to the control group.
This study suggests that even shorter term aerobic exercise can facilitate neuroplasticity to reduce negative
cognitive consequences of aging and promote brain health in older sedentary adults.
Chapman et al. frontiers in Aging Neuroscience. 2013; 5(75):1-10.
14. “To keep the body in
good health is a duty…
otherwise we shall not
be able to keep our mind
strong and clear.”
- Buddha
“If we could give every
individual the right
amount of nourishment
and exercise, not too
little and not too much,
we would have found
the safest way to
health.”
- Hippocrates