Which of the following is NOT listed as a predictive submaximal test used to estimate VO2max from heart rate and workload relationships?

• A. Modified Bruce Treadmill Test
• B. Canadian Aerobic Fitness Test (CAFT)
• C. 20-Meter Shuttle Test (20-MST)
• D. Timed Up and Go (TUG)

Answer: (D)

Submaximal VO2max estimation relies on the linear rise in heart rate as workload increases and uses that relationship to project what VO2max would be at maximal effort. The modified Bruce treadmill test provides submaximal heart rate data across staged treadmill workloads so you can extrapolate to an estimated VO2max. The Canadian Aerobic Fitness Test also uses heart rate responses to predetermined submaximal workloads to predict VO2max. The 20-Meter Shuttle Test follows a graded workload increase, and when heart rate data are incorporated, it can be used to estimate VO2max based on how heart rate responds to the escalating work rate. The Timed Up and Go is a functional mobility test that measures how quickly an individual can stand, walk, turn, and sit; it does not generate the sustained submaximal HR–workload data needed to estimate VO2max, which is why it isn’t used as a predictive submaximal VO2max test.