A 50 kg woman achieved 10 METS on a graded exercise test performed on a treadmill. You decide she should start her exercise training program at 70% of her maximal aerobic capacity. Calculate the appropriate workload for her on a treadmill.

Question

BlackTom AI · Accepted Answer

We start by identifying what the question is asking: determine the treadmill workload corresponding to 70% of maximal aerobic capacity for a 50 kg woman who achieved 10 METS during a graded exercise test.
First, convert METS to VO2 in ml/kg/min. 1 MET ≈ 3.5 ml/kg/min, so 10 METS ≈ 35 ml/kg/min. 70% of that is 0.70 × 35 = 24.5 ml/kg/min. This value represents the target oxygen consumption rate during training.
Next, relate VO2 to treadmill workload using the ACSM metabolic equations for walking. For walking on a treadmill, VO2 (ml/kg/min) ≈ (0.1 × speed in m/min) + (1.8 × speed in m/min × grade) + 3.5. We must use speed in meters per minute and grade as a decimal.
Option A: walking at 2.8 mph with 10% grade. Convert speed: 2.8 mph ≈ 2.8 × 26.8224 ≈ 75.1 m/min. Compute VO2: 0.1×75.1 = 7.51; 1.8×75.1×0.10 ≈ 13.52; add resting 3.5. Sum ≈ 7.51 + 13.52 + 3.5 = 24.53 ml/kg/min, which matches the target 24.5 ml/kg/min.
Option B: All of the answers shown here. To assess this, we would need multiple options to meet 24.5 ml/kg/min; the other options must be individually evaluated.
Option C: walking at 3.9 mph with 0% grade. Speed 3.9 mph ≈ 3.9 × 26.8224 ≈ 104.7 m/min. VO2 ≈ 0.1×104.7 + 0 + 3.5 = 10.47 + 3.5 = 13.97 ml/kg/min, which is far below the target 24.5.
Option D: running at 5.1 mph with 0% grade. Speed 5.1 mph ≈ 5.1 × 26.8224 ≈ 136.7 m/min. VO2 ≈ 0.1×136.7 + 3.5 = 13.67 + 3.5 = 17.17 ml/kg/min, still well below the target 24.5.
Putting these evaluations together, only the first option yields a VO2 near 24.5 ml/kg/min, aligning with 70% of her VO2max. The other options produce substantially lower VO2 values, indicating insufficient training intensity. The notion of “All of the answers shown here” would be incorrect unless every listed workload matched the target VO2, which is not the case here. The remaining two options demonstrate walking or running at speeds and grades that do not hit the 24.5 ml/kg/min target, illustrating why they are not suitable choices.
In summary, the calculation confirms that 70% of 10 METS corresponds to a VO2 of about 24.5 ml/kg/min, and the treadmill workload that achieves this is walking at 2.8 mph with a 10% grade, as shown in option A.

A 50 kg woman achieved 10 METS on a graded exercise test performed on a treadmill. You decide she should start her exercise training program at 70% of her maximal aerobic capacity. Calculate the appropriate workload for her on a treadmill.

查看解析

登录即可查看完整答案

类似问题

ACSM recommends resistance training how many days each week?

According to exercise prescription guidelines and FITT Principles, how many days per week for vigorous-intensity exercise.

Heather has come in for a health consult at your sports science clinic. As an Accredited Exercise Scientist, which of the following services can you provide to Heather?

Which of the following responsibilities falls within the scope of an Accredited Exercise Scientist?

The VP in the acronym FITT-VP stand for which of the following?

Volume (in the FITT-VP principle) is based on which of the following? Choose one or more of the following.

The FITT principle stands for:

For most adults, an exercise program that includes: _______________________________________________ is indispensable to improve and maintain physical fitness and health.

更多留学生实用工具

考试浏览器助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单