Other physiological tests. Factors That Contribute to Physical Performance.
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Other physiological tests
Transcript of Other physiological tests. Factors That Contribute to Physical Performance.
Other physiological tests
Factors That Contribute to Physical Performance
What the Athlete Gains From Physiological Testing
• Information regarding strengths and weaknesses– Can serve as baseline data to plan training
programs
• Feedback regarding effectiveness of training program
• Understanding about the physiology of exercise
Effective Physiological Testing
• Relevant to the sport• Valid and reliable• Sport-specific• Repeated at regular intervals• Carefully controlled procedures• Interpreted to the coach and athlete
Maximal Run Tests
• Measure how far a person can run in a set time or how fast they can run a set distance– Cooper’s 12-minute run and 1.5 mile run– AAPHERD’s 1-mile run/walk
• VO2max estimates based on the linear relationship between running speed and oxygen cost of running
Canadian Home Fitness Test
• Uses 8-inch steps to evaluate cardiorespiratory fitness
• Measure HR after 3 minutes of stepping– Stop if it exceeds maximum allowable HR based
on age– Continue for another 3 minutes if it is below
maximum allowable HR– Fitness level is based on post-exercise HR
Estimation of VO2max From a Submaximal Treadmill Test
The Y’s Way to Physical Fitness Cycle Ergometer Protocol
Predicting VO2max From Submaximal Step Test
The Yo-Yo Intermittent Recovery Test
• The Yo-Yo IR level 1 (Yo-Yo IR1) test focuses on the capacity to carry out intermittent exercise leading to a maximal activation of the aerobic system
• Yo-Yo IR level 2 (Yo-Yo IR2) determines an individual’s ability to recover from repeated exercise with a high contribution from the anaerobic system
• more sensitive measure of changes in performance than maximum oxygen uptake
• Widely used, valid, reliable
Protocols for Yo-yo IR1 and IR2
Bangsbo et al, Sports Med, 2008
Physiological responses in Yo-yo test
Reproducibility of Yo-yo test
Relationship between performance and Yo-Yo test
Use Yo-yo test to monitor seasonal changes
Yo-yo test vs Maximal VO2
Laboratory Tests to Predict Endurance Performance
• Lactate threshold– Exercise intensity at which blood lactic acid begins to
systematically increase– Blood samples taken during incremental exercise
• Critical power– Speed at which running speed/time curve reaches plateau– An important parameter for aerobic function
• Peak running velocity– Highest speed that can be maintained for >5 seconds
Test to measure critical power
• Several all-out running/cycling exercise at different power (W)– Time consuming, effort consuming
• 3-min all-out cycling exercise– Subjects need to be highly motivated and fully
familiarized with the test protocol – During the test, pacing is prevented by absence of
any time-based feedback, and the subject is strongly encouraged to maximize power output, at all times.
– no decremental trend at any point during the test and attains >95% VO2max
Critical Power
Predicting Performance From Peak Running Velocity
Critical power and training intensity
Jones et al, MSSE 2010
Critical power and VO2max/lactate
Jones et al, MSSE 2010
Critical power and PCr
Jones et al, MSSE 2010
Measure critical power in 3-min all-out exercise
Jones et al, MSSE 2010
Tests to Determine Running Economy
• Measurement of the oxygen cost of running at various speeds– Greater running economy reflected in lower
oxygen cost
• Higher economy means that less energy is expended to maintain a given speed
Running Economy
Estimating 10,000m Running Time Using LT and Running Economy
• VO2 at LT – 40 ml•kg-1•min-1
• VO2 of 40 ml•kg-1•min-1 – equals running speed of 205 m•min-1
• Estimated 10,000m running time
10,000m 205 m•min-1 = 48.78 min
Running Economy and LT Results From Incremental Exercise Test
Energy System Contribution to Maximal Exercise
Determination of Maximal Anaerobic Power
Ultra short-term tests• Tests ATP-PC system• Examples–Margaria power test• Stair running
– Jumping power tests• CMJ, squat jump
– Running power tests• Series of 40-yard
dashes
– Cycling power tests• 10 s Wingate test
Short-term tests• Tests anaerobic
glycolysis• Examples– Cycling tests• 30 s Wingate test
– Running tests– Sport-specific tests
The Margaria Power Test
Series of 40-yard Dashes to Test Anaerobic Power
