Unit 2d : Aerobic fitness
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What are Aerobic fitness tests mainly used for ? (6)
• screen for CAD risk • Evaluate the Cardio-respiratory system • Evaluate vascular system • Evaluate the Px’s overall response to exercise • Determine the fitness level • monitor progress over time
What are the Laboratory testing protocols and give an example of each (4-8)
• Maximal (e.g bruce) • Submaximal (e.g YMCA protocol) • Direct (e.g o2 gas analyzer to measure exhaled air composition) • Indirect (HR and equations to predict vo2max)
What are the Field-based protocols and give an example of each (3-6)
• step tests (e. gYMCA) • Run-walk tests (e.g 1.6 or 2.4km) • Swim tests (e.g distance and time used to predict vo2max)
What are the test termination criteria for an exercise test? (10)
• Angina • SBP drops > 10 despite increased workload • EXtreme shortness of breathe • Claudication • poor perfusion • HR doesn’t increase w workload • ECG abnormalities • Request to stop • Signs of sever fatigue • equipment failure
Name 8 steps for conducting GXTs. (8)
• pretest instructions • Paperwork • measure resting baseline data (HR, BP, EKG) • Give instructions and start warm-up • Continual monitoring • stage change (depends on protocol) • Termination • Cool down and recovery
What are the submaximal assumptions? (4)
• Steady HR is achived and stays consistent for work rate • Linear relationship between HR and Vo2 for HRs between 110 and 150bpm • Mechanical efficiency is the same for all tests • HRmax is similar for same age groups
How long are bruce protocol stages ? (1)
3 minutes
Why do we use modified bruce and what is the difference ? (3)
For elderly or high risk px (1) extra warm-up of 3 min at 2.7lm/h at )% gradient (1) slightly different increments (1)
What is the initial workload for normal px ? (3)
1.7 mph, 10%, 3 min
What is the inital workload for high risk px ? (3)
1.7 mph, 0-5%, 3 min
What is the submaximals test max HR ?(1)
<85% age pridicted HR (220-age)
For YMCA what range should the HR be in ? (1)
110 - 150
Equation for watts ? (1)
watts = RPM x load (kg)
How to convert from watts to kgm/min? (1)
watts x 6
3 most important test termination criteria for YMCA? (3)
• SBP drop >10 despite increaed workload • DBP rise > 15 • Reached 85% age predicted HR max
what is PWC-170 ? (1)
estimates the working capacity at a heart rate of 170 beats per minute
Name 7 Aerobic fitness tests (7)
• YMCA • Bruce prtocol • Astrand-Rhyming protocol • Step test protocol • 1.6km run/walk test protocol • 6-min walk test (elderly) • 2 min step test (elderly)
Male norms for YMCA age group 20-29 ?
> 44.5 good 38.3-43.1 Fair <38.3 poor
Female norms for YMCA age group 20-29 ?
> 33.6 good 20.1 -32.4 Fair <20.1 poor
What is Vo2 max ?
product of maximal cardiac output and aterial venous oxygen difference