Unit 3&4 Physical EducationAssessing Physical Activity
Assessment of IntensityTalk Test Determine the extent a person has enough breath to be able to speak during activity. Low Intensity level – should be able to sing. Moderate Intensity level – should be able to carry on a conversation. Vigorous intensity level – too out of breath to conduct a conversation.
Assessment of IntensityTarget Heart Rate Determines whether a persons heart rate is within the target zone during activity. Moderate Intensity level– 50-70% max HR Vigorous Intensity level– 70-85% max HR Note – Max HR = 220 – age.
Assessment of IntensityPerceived Exertion (Borg Rating Scale) Refers to how hard you feel your body is working on a scale from 6-20 6 – ‘no exertion at all’ 20 – ‘maximal exertion’
Assessment of IntensityMetabolic Equivalent (MET) Level A MET is the unit used to measure the amount of oxygen used by the body during physical activity. 1 MET equals the energy (O2) used by the body as you sit quietly. Moderate Intensity Activity – 3 to 6 METS Vigorous Intensity Activity – over 6 METS
Examples of Intensity Related Activities! Light Activity Moderate Activity Vigorous Activity
Methods for Assessing Physical ActivitySubjective Methods Depend on our perceptions of physical activity Predominately used for measurement in populationsObjective Methods Rely on solid data or observations Predominately used for measurement in individuals
Subjective MethodsSelf Report Physical Activity Diaries LogsRecall Usually made up of short simple questionnaire of 5-15 items Set to investigate physical activity patterns
Objective MethodsHeart-rate Telemetry Subject wears device that provides data on the heart rate in response to exercise Can be set to record and collect data
Objective MethodsPedometry Subject wears device that records the number of steps taken and estimates distance covered 10000 steps is considered equivalent to meeting National Physical Activity Guidelines
Objective MethodsAccelerometry Subject wears device to assess the acceleration of the body in certain directions Provides data on the frequency, duration and intensity of activityDoubly Labelled Water Technique used to accurately estimate total energy expenditure. Based on the movement of 2 different types of water found in the body
Objective MethodsDirect Observation Data collected that measures activity in regards to type, time, place and social setting Very useful for children Can be used in conjunction with other methods There are 3 main observation systems used:
Direct ObservationBEACHES (Behaviours of Eating Activity for Children’s Health Evaluation System) Designed to monitor children eating and activity both at home and at schoolSOFIT (System for observing Fitness Instruction Time) Used during PE classes, measures activity, lesson context and teacher behaviour.SOPLAY (System for Observing Play and Leisure Activity in Youth) Used to assess the physical activity of groups in certain settings. Assesses the number of people in a designated activity area and their activity level at specific times