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McGill University
Kinesiology&Physical Education
EDKP 350
Celena Scheede- Bergdahl

Physical Fitness Assessment Methods: EDKP 350/ 2012 Chapter 4 Assessing cardiovascular fitness 10/15/2012 10:50:00 AM Cardiorespiratory Endurance  Ability to perform dynamic exercise involving large muscle groups at moderate-to-high intensity for prolonged periods (ACSM 2000)  Criterion measure is VO2max * Could ask how to do VO2max calculation in text book Assessing capacity for muscles to use it  Vo2max is the most valid measure of the cardiorespiratory systems functional capacity  VO2max reflects o Maximal ability of cardiorespiratory system to deliver O2 and nutrients to muscles used o Ability of muscles to use them VO 2eak Versus VO ma2 Peak criteria:  HR fails to increase with increasing workload  Blood Hla  8 mmol/L  RER  1.15 (respiratory exchange ratio) shouldn’t be here  RPE  17 on Borg 6 to 20 scale Max criteria:  All of the above plus  50 ml/min change with increasing workload (plateau attained)  RER  1.15 (respiratory exchange ratio)  * Get plateau for VO2 and heart rate at max/ really intense work rates Athletes can sometime be able to endure more lactate, greater than 8mmol RER- ratio btwn oxygen consumption and carbon dioxide production – doesn’t always work ex. Funny results if someone is hyperventilating Absolute VO 2  discrete volume of O2 consumption  expressed in L/min or ml/min  Used for non-weight bearing modalities  Directly related to body weight * Use VO2 peaks in young children and older adults Relative VO 2 - a volume of O2 consumption relative to unit of body mass and time - expressed as ml/kg/min - used for weight-bearing modalities - best for comparing people of different body size - can express as ml/kg/min to look at O2 consumption of muscle mass * Per kilogram body weight in this person vs. this person.. Than you can compare Gross Versus Net VO 2 - Not synonymous terms - Gross VO2 = caloric cost of exercise and rest (Gross = exercise + rest) - Net VO2 = caloric cost of exercise only (et = Gross – rest) - Express in either absolute or relative terms - Rest is 3.5ml/kg/min or 1 MET * Net=taking out resting values VO peak Versus VO max 2 2 Peak criteria are similar to criteria VO2 max except RER is < 1.15 and no plateau is attained Children, older adults, sedentary people, and those with know disease are likely to attain VO2 peak, but not max Graded Exercise Test  Objective assessment of functional capacity  Can use maximal or submaximal tests  Can observe and compare numerous variables from baseline testing to follow-up testing  Instrumental for exercise programming and goal setting  CSM recommends maximal exercise testing prior to start of vigorous exercise program for older, moderate-risk, or high-risk individuals  Vigorous is >60% Vo2max, or > 6 METs * Seeing how body responds to increase in work load Procedures for Conducting GXTs  Pretest instructions  Paperwork  Resting baseline data (HR, BP, EKG)  Instructions and warm-up stage  Periodic (and continual) monitoring  Stage changes (depend on protocol)  Termination (criteria depend on protocol, client, S/S) * Talk them through the whole test Never leave the person performing the test alone Anginal threshold Rating of Perceived Exertion (RPE)  Original 6 to 20 scale was revised to 0-10 scale  Both highly related to HR and VO2  Subjective scales of overall exertion  Moderate intensity is 12-14 on original scale and 6 on revised scale  OMNI pictorial scales may also be used for children through adult age groups Maximal Exertion Protocols  Choose protocol and modality wisely!  Individualized protocol is best – ie. Cyclist test for cyclist  Highest VO2 is with uphill running; lowest is with arm ergometry  Usually lasts 8 to 12 mins  Can be continuous or discontinuous protocol  Discontinuous protocols take longer Submaximal Exertion Protocols  Choose protocol and modality wisely!  Similar to maximal exertion GXTs  May or may not involve stage change (s)  Monitor constantly for S/S and proper hemodynamic response  Generally terminated based on predetermined criteria (e.g: 85% age-predicted maximal HR)  Results can be used to estimate exercise tolerance & VO2max Treadmill Protocols - Manipulate workload via speed (mph) and grade (%) - ACSM’s TM walking and running equations estimate metabolic cost of exercise (energy expenditure)  Assume steady state stages (overestimates if not)  Cannot account for anaerobic component  Walking equation better if walking with incline  Use running equation for speeds >5 mph or slow jobs (3mph) - Many treadmill protocols exist - Choose best one for your client - Many have their own equation to calculator VO2 - Some use programs Calculating VO 2 70 kg woman walks at 3.5 mph at no grade VO 2 Horizontal + Vertical + Res
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