The document discusses the center of gravity (COG) of the human body. It defines COG as the imaginary balancing point where body weight is equally distributed. It can be located mathematically using formulas that factor in variables like height, weight, and sex. Determining the COG is important for tasks like maintaining balance during physical therapy and improving athletic performance by pushing or pulling near the COG point.
In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity.
Watch other topics in http://bit.ly/2PIOIQM
In physics, a force is any interaction that, when unopposed, will change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity.
Watch other topics in http://bit.ly/2PIOIQM
Newton's laws of motion are three physical laws that, together, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces
To become science-based engineers, having a thorough knowledge of basic science or physical science, a broad knowledge of the principles and methods of mechanics, and an ability to apply those fundamentals in practical situations.Its very important for all students of engineering/diploma holders of any branch.
Introduction to kinesiology (Biomechanics- Physiotherapy) vandana7381
Chapter 1: Introduction to Kinesiology ( Biomechanics) for physical therapy students.
Reference: JOINT STRUCTURE AND FUNCTION - by Pamela K. Levangie.
Easy to understand and with lot of examples.
At the end of this you will be able to:
Define Posture.
Define types of Posture.
Give the Mechanism of Posture.
Explain the Pattern of Posture.
Demonstrate the Principles of Re-education.
Express the Technique of Re-education.
Posture - a perquisite for functional abilities in daily life. Posture is a combination of anatomy and physiology with inherent application of bio-mechanics and kinematics. Sitting, standing, walking are all functional activities depending on the ability of the body to support that posture to carry out each activity. Injuries and pathologies either postural or structural can massively change the bio-mechanics of posture and thus affect functional abilities.
Newton's laws of motion are three physical laws that, together, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces
To become science-based engineers, having a thorough knowledge of basic science or physical science, a broad knowledge of the principles and methods of mechanics, and an ability to apply those fundamentals in practical situations.Its very important for all students of engineering/diploma holders of any branch.
Introduction to kinesiology (Biomechanics- Physiotherapy) vandana7381
Chapter 1: Introduction to Kinesiology ( Biomechanics) for physical therapy students.
Reference: JOINT STRUCTURE AND FUNCTION - by Pamela K. Levangie.
Easy to understand and with lot of examples.
At the end of this you will be able to:
Define Posture.
Define types of Posture.
Give the Mechanism of Posture.
Explain the Pattern of Posture.
Demonstrate the Principles of Re-education.
Express the Technique of Re-education.
Posture - a perquisite for functional abilities in daily life. Posture is a combination of anatomy and physiology with inherent application of bio-mechanics and kinematics. Sitting, standing, walking are all functional activities depending on the ability of the body to support that posture to carry out each activity. Injuries and pathologies either postural or structural can massively change the bio-mechanics of posture and thus affect functional abilities.
Introduction to Balance and its concepts, Impaired balance and then management of impaired balance.
Based on Therapeutic Exercise Foundations and Techniques
Lab 9Body Composition AssessmentPurpose The purposes of t.docxcroysierkathey
Lab 9
Body Composition Assessment
Purpose:
The purposes of this laboratory experience is to develop your skill in using the skinfold and bioelectrical impedance analysis (BIA) to assess body composition and to use common anthropometric measures such as body mass index (BMI) and waist-to-hip ratio (WHR) to estimate health risks associated with being overweight. You will also gain knowledge of hydrodensitometry (hydrostatic weighing), the air displacement technique, and duel energy x-ray absorptiometry (DEXA) methods to assess body composition.
Background:
Relative body fat percentage is a good indicator of general health and fitness. High percent body fat is associated with increased risks for several diseases including diabetes, hypertension (high blood pressure), certain cancers, cardiovascular disease, and hyperlipidemia (high cholesterol) among others. Conversely, appropriate body fat is associated with increased longevity and reduced risk for developing the conditions mentioned above. Body composition is estimated in order to determine a healthy body weight, to monitor growth in children, to monitor health status in malnourished or diseased populations, and to estimate competitive body weight for athletes.
Methods: (skinfolds, BIA, anthropometric)
Equipment:
General:
· Anthropometric measuring tapes
· Marking pens
· Body weight scale
· Stadiometer
Skinfold Measurement:
∙ Plastic or metal skinfold calipers, preferably metal calipers
Bioelectrical Impedance Analysis:
∙ BIA analyzer (OMRON)
Testing Procedures:
Work in groups of 2 - 3 for all measurements. Your write-up will include data for 2 subjects. One student will be measured, one will be measuring, and one will record. Rotate positions until all students have performed all roles.
General:
∙ Obtain demographic information from client and fill-in Data collection form
Skinfolds:
∙ Follow the measuring procedures for skinfold measurement.
∙ Use the standardized anatomical descriptions for skinfold sites to locate each site. Mark the six skinfold sites with the surgical marking pen.
BIA (OMRON):
∙ Enter data into OMRON.
∙ Have client grasp handles firmly and hold out in front of themselves with arms parallel to the ground and legs shoulder width apart.
∙ Hit START button.
Anthropometric Measures:
∙ BMI = wt/ht2
O Wt = weight in kilograms
O Ht = height in meters
∙ Waist-to-Hip ratio = C-waist/C-hip
O C-waist = circumference of waist at narrowest point between xiphoid process and umbilicus
O C-hip = circumference of hip at widest point between iliac crest and gluteal fold
Data Analysis:
Skinfolds:
∙ Calculate body densities for at least 3 subjects (may include yourself as one) using all 3 equations [converting skinfold thickness to body density (Db)]
∙ Convert to percent body fat using the population specific equations
∙ Classify the percent body fat for your subjects using the most appropriate equation
BIA:
∙ Measure percent body fat 2 times for each client
∙ Record avera ...
Posturography in Neurological Disorders - How to assess and treat balance wit...sensingfuture
Neurological disorders are one of the major causes of mortality and disability worldwide and are frequently associated with varying degrees of sensory and motor problems. Balance control impairment is often present in patients suffering from these disorders, highly impacting daily life. For this reason, it is vital to recognize and assess neurological disorders of balance and posture in clinical settings.
The aim of clinical balance and posture assessment is to, firstly, identify if there is in fact a balance problem, and finally to determine and differentiate the underlying cause, so the intervention is as effective as it can be. This means that balance and posture assessment should provide objective and quantitative measurements so it can be translated into simple, nonetheless vital, information for diagnosis and treatment planning. Learn about posturography in neurological balance dysfunctions. Visit our website: www.physiosensing.net
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
BÀI TẬP BỔ TRỢ TIẾNG ANH GLOBAL SUCCESS LỚP 3 - CẢ NĂM (CÓ FILE NGHE VÀ ĐÁP Á...
Center of gravity
1. KKU_Biomech_M2_L1
Center of gravity
Lesson (1)
Dr / Shimaa Essa
Lecturer of physical therapy , faculty of community,
King Khalid university
2. Upon successful completion of this lesson you would be
able to:
1- Define body center of gravity
2- Identify factors affecting location of center of gravity
3- Calculate location of center of gravity
4- Identify body’s bone and soft land marks
5- Apply steps to locate body center of gravity
6- Identify the importance of locating center of gravity
3. • Center of gravity is an imaginary balancing point where the body
weight can be assumed to be concentrated and equally
distributed. Its symbol is COG or CG.
• It is the point of exact center, around which the body may rotate freely
in all directions. It can also be called center of mass.
• Anatomically; This point can be represented by the point of intersection
of the three cardinal body planes (capital, frontal and transverse).
• The center of gravity can be located within or outside the body
depending on the body's configuration and position; it is inside an object
when the object is uniform and outside the object when it is not
uniform.
4. DEFINITIONS:
• Center of gravity is an imaginary balancing
point where the body weight can be
assumed to be concentrated and equally
distributed. Its symbol is COG or CG.
• It is the point of exact center, around which the
body may rotate freely in all directions. It can
also be called center of mass.
5. • Anatomically; This point can be represented by
the point of intersection of the three cardinal body
planes (capital, frontal and transverse).
• At this point; the summation of all forces equal
zero as well as the summation of moments equal
zero so; clockwise moment + counterclockwise
moment = zero.
6. • The center of gravity can be located within or
outside the body depending on the body's
configuration and position; it is inside an
object when the object is uniform and outside
the object when it is not uniform.
7. • It’s is located anterior to the second sacral
vertebra in the anatomical position (standing) in
normal adult person.
1) In new born: above umbilicus.
2) At six month: at the level of six thoracic vertebra.
3) At two years: at the level of umbilicus.
4) At five years: below the level of umbilicus.
5) Adult: anterior to the second sacral vertebra.
8.
9. 1- Age: age
2- Sex: female male
3- Height: Height
4- Position of Any Segment in Relation to Total
Body Segments
5- Weight "the Weight Could be Added or
Subtracted”
(+) Weight goes to the bigger weight
(-) Weight goes to the bigger weight
10. • Total Body COG
The total body COG can be determined using
mathematical or laboratory methods.
I- Mathematical determination of COG:
a) Regarding to sex: “Croskey formula”
b) Regardless to sex: "Palmar formula"
11. Mathematical determination of COG
a) Regarding to sex: COG location can be
calculated in both male and female by “Croskey
formula”
Total body height x 55.44
In female: -------------------------------- = height of COG measured
100 from heel
Total body height x 56.18
In male: --------------------------------- = height of COG measured
100 from heel
12. Mathematical determination of COG
b) Regardless to sex: "Palmar formula"
We can calculate COG regardless to the subject sex by
multiplying 55.7 % of height and then adding 1.4 cm.
Total body height x 55.7
-------------------------------- + 1.4 = height of COG measured
100 from heel
13. - Greater trochanter.
- Anterior superior iliac spine.
- Iliac crest (L4)
- Xiphoid process.
- Spine of scapula.
- Umbilicus.
**As umbilicus may be affected by muscle
weakness or paralysis, so bony landmarks
are more accurate.
14. 1- At first, put an object over the top of the head.
2- Then, measure body height from heel to the tragus
from lateral side to avoid the disadvantage of bad
muscular distribution as belly abdomen.
3- Then, find mathematically the total body COG either
with "Palmar formula" or with "Croskey Formula".
4- Finally, find the relation of the total body COG height
to either bony landmark or soft tissue landmark.
15. 1-To maintain balance through locating
COG at its level during physical therapy
treatment.
2-To enhance patient's gait during
reeducation of walking via
pushing or grasping the patient near to
his COG.
16. 3- Total COG must be well known to identify and
determine the level of performance of athletic player.
As a result, it will help the biomechanics to improve
the players' performance.
4- Segmental COG must be known especially in
amputation. The distribution of the weight of artificial
limb must be equivalent to that of the amputated
limb.
If the weight of the artificial limb increases, the
segmental COG level will change and as a result the
total COG level will change which may place overload
on a diseased part which may cause pain.
18. o The center of gravity is the point of exact center, around
which the body may rotate freely in all directions. It can
also be called center of mass.
o The center of gravity is determined by two methods,
Mathematically and Laboratory.
o The mathematical method is conducted through the use
of either Croskey’s or Palmar’s formulas.
o The importance of determining body’s COG is reflected in
patient’s rehabilitation during gait training, and for
prosthetics prescription.