Assessing physical activity


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Assessing physical activity

  1. 1. Unit 3&4 Physical EducationAssessing Physical Activity
  2. 2. 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.
  3. 3. 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.
  4. 4. 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’
  5. 5. 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
  6. 6. Examples of Intensity Related Activities! Light Activity Moderate Activity Vigorous Activity
  7. 7. 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
  8. 8. Subjective MethodsSelf Report Physical Activity Diaries LogsRecall Usually made up of short simple questionnaire of 5-15 items Set to investigate physical activity patterns
  9. 9. 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
  10. 10. 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
  11. 11. 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
  12. 12. 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:
  13. 13. 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