Exercise Prescription Flashcards
What is the purpose of exercise prescription?
To provide guidance to professionals who counsel and prescribe individualized exercise to apparently healthy adults of all ages
What information is needed for exercise prescription?
- Health history
- Risk stratification
- Goals (Long- and short-term)
- Level of commitment
- Obstacles
- Type of program needed
- Medical Clearance
Types of Medical Clearance
- Coronary artery disease (CAD) screening
- Physical examination
- Exercise ECG
ACSM Recommendations for Moderate-Intensity Exercise
Cardiorespiratory Exercise for:
- 30+ min/day
- 5+ days/week
- Total of 150+ min/week
ACSM Recommendations for Vigorous-Intensity Exercise
Cardiorespiratory Exercise for:
- 20+ min/day
- 3+ days/week
- Total of 75+ min/week
ACSM Recommendations for Moderate/Vigorous-Intensity Combo Exercise
Achieve a total energy expenditure of 500-1000+ METxmin/week
ACSM Recommendations for Resistance Exercise
- Work each of the major muscle groups
- 2-3 days/week
- 2-4 sets
- 8-12 reps/set
ACSM Recommendations for Flexibility Exercise
- Total of 60 seconds/exercise
- 2+ days/week
FITT Principles of Exercise Prescriptions
- Frequency
- Intensity
- Time (duration/volume)
- Type (mode)
Frequency
- How often exercise is performed
Recommendation: - 5+ days/week of moderate exercise
- 3+ days/week of vigorous exercise
Intensity
- How hard the athlete is working
Recommendation: - Moderate intensity- 3-5.9 METs
- Vigorous intensity- 6+ METs
Time
- How long exercise lasts
Recommendation: - Moderate intensity: 30-60+ min/day; 150+ min/week
- Vigorous intensity: 20-60 min/day; 75+ min/week
Type
- Mode of exercise
Recommendation: - Regular, continuous rhythmic exercise using large muscle groups
Classification of Exercise Intensity
- Very light
- Light
- Moderate
- Heavy
- Very heavy
Very Light Exercise
- HR max % – <35%
- VO2 max – <30%
- RPE – <9
Light Exercise
- HR max % – 35-59%
- VO2 max – 30-49%
- RPE – 10-11
Moderate Exercise
- HR max % – 60-79%
- VO2 max – 50-74%
- RPE – 12-13
Heavy Exercise
- HR max % – 80-89%
- VO2 max – 75-84%
- RPE – 14-16
Very Heavy Exercise
- HR max % – 90+%
- VO2 max – 85+%
- RPE – >16
Relationship between HR and VO2
There’s a linear relationship between HR and VO2 with increasing rates of work
STRRIDE study
Studies of a Targeted Risk Reduction Intervention with Defined Exercise
STRRIDE Eligibility Criteria
- Age: 40-65
- Body Composition: BMI b/t 25-35
- Blood Pressure: < or equal to 160/90 mmHg
- Demographics: equal genders, 30% minority
- Activity Level: sedentary, peak VO2 < or equal to 40 mL/kg/min (11 METs)
- Medications: nothing known to influence skeletal muscle or exercise training responses and stable for 6 months
STRRIDE Training Protocols
- Low volume/Moderate intensity
- Low volume/Vigorous intensity
- High volume/Vigorous intensity
- Inactive
Low volume/Moderate Intensity
Intensity (% of VO2 max): 40-55%
Volume (kcal/wk): 1300
Frequency (min/wk): 170
Low volume/Vigorous Intensity
Intensity (% of VO2 max): 65-80%
Volume (kcal/wk): 1300
Frequency (min/wk): 120
High volume/Vigorous Intensity
Intensity (% of VO2 max): 65-80%
Volume (kcal/wk): 2200
Frequency (min/wk): 170
Inactive
Intensity (% of VO2 max): None
Volume (kcal/wk): None
Frequency (min/wk): None
STRRIDE Study Design
- 0-3 months: Ramp-up
- 4-9 months: Training
- Month 9: Detraining
- 10-12 months: Retraining (optional)
Percent Change in Peak VO2 (lowest to highest)
- Inactive
- Low volume/moderate intensity
- Low volume/vigorous intensity
- High volume/vigorous intensity
Percent Change in Body Mass
- Inactive (+1)
- Low Volume/Moderate Intensity (-1)
- Low Volume/Moderate Intensity (-0.75)
- High Volume/Vigorous Intensity (-2)
Changes in Waist Circumference
- Inactive (+2)
- Low Volume/Moderate Intensity (-1)
- Low Volume/Moderate Intensity (-1)
- High Volume/Vigorous Intensity (-3)
Changes in Body Fat Stores
Greatest negative changes occur for high volume/vigorous intensity
Changes in Insulin Sensitivity
Low volume/Moderate intensity and High volume/Vigorous intensity had similar/best positive changes