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Cardiorespiratory Fitness: Estimation from Field and Submaximal Exercise Tests

Cardiorespiratory Fitness: Estimation from Field and Submaximal Exercise Tests. Chapter 7. Reasonable and Expected Values for VO 2. Textbook, Fig. 7.7, P. 126. Terminology. VO 2 R VO 2 reserve capacity VO 2 R = (VO 2 max – VO 2 Resting) HRR Heart Rate Reserve HRR = (HRmax – HR rest).

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Cardiorespiratory Fitness: Estimation from Field and Submaximal Exercise Tests

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  1. Cardiorespiratory Fitness: Estimation from Field and Submaximal Exercise Tests Chapter 7

  2. Reasonable and Expected Values for VO2

  3. Textbook, Fig. 7.7, P. 126

  4. Terminology • VO2R • VO2 reserve capacity • VO2R = (VO2max – VO2 Resting) • HRR • Heart Rate Reserve • HRR = (HRmax – HR rest)

  5. Mode of Activity • Use of large muscle groups • Legs or legs + arms • When small muscles are used the HR response is exaggerated • Different modes are equivalent if HR is raised to same level for same period of time or total calories are the same

  6. Factors Determining Best Mode • Enjoyable • Accessible • Orthopedic limitations • Body Mass • Motor Skill • Must do activities that are at least tolerable

  7. Fitness and Health

  8. ACSM/AHA Current PA Recommendations • Moderate intensity aerobic exercise (3-6 Mets) for minimum of 30 min, 5 days per week • OR, vigorous intensity aerobic exercise (>6 Mets) for minimum of 20 min, 3 days per week. • Any combination that accumulates 450-750 Met.min • 500-1000 kcals for 70 kg person • 7.2-14.2 kcal.kg-1 • Strength training

  9. What Counts? • Intermitten bouts of at least 10 minutes • Occupational tasks that meet the intensity criteria

  10. Expected Improvement in Fitness • VO2max improves 10-30% • Lactate threshold improves 10-20%

  11. Maintenance • Health Benefits • 450-750 Met.min per week forever • Consistency is the key • Fitness Benefits • Maintaining intensity will maintain VO2max • IF training is stopped • Loss of up to 50% after 1-3 months • Loss of 100% after 3-8 months

  12. Metabolic Equations for Estimating Gross VO2 (ACSM 2000) [a]S= speed of treadmill in m∙min-1; 1 mph = 26.8 m∙min-1. b G= grade (% incline) of treadmill in decimal form; e.g., 10% = 0.10. c W= power output in watts; 1 W = 6 kgm∙min-1. d M= body mass in kilograms; 1 kg = 2.2 lb. e F= frequency of stepping in steps per minute. f ht= bench height in meters; 1 in. = 0.0254 m.

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