Final answer:
Isaac's VO2max calculated using the Fox Cycle ergometer protocol and his given heart rates is 7.19 ml⋅kg⋅min, which does not match any of the provided answer choices. This suggests there might be an issue with either the calculation or the listed answer options.
Step-by-step explanation:
To determine Isaac's VO2max using the Fox Cycle ergometer protocol, we must employ a specified formula that incorporates his exercise heart rate (EHR), body weight, and resting heart rate (RHR). The widely accepted equation for estimating VO2max in ml⋅kg⋅min using the Fox Cycle ergometer protocol for men is given as:
VO2max = (6.0 × EHR − RHR) + 6.4.
In Isaac's case, his EHR is 160 bpm and his RHR is 61 bpm. Substituting these values into the equation gives:
VO2max = (6.0 × 160 - 61) + 6.4 = (6.0 × 99) + 6.4 = 594 + 6.4 = 600.4 ml⋅min.
Next, we convert the body weight from pounds to kilograms, as the VO2max standard measurement is in ml⋅kg⋅min. Since 1 pound equals approximately 0.45359237 kilograms, Isaac's weight in kilograms is:
184 lb × 0.45359237 kg/lb = 83.46 kg.
Finally, we calculate Isaac's VO2max per kilogram of body weight:
VO2max = 600.4 ml⋅min ÷ 83.46 kg = 7.19 ml⋅kg⋅min.
None of the provided options (-36.34, -38.59, -34.67, -40.25 ml⋅kg⋅min) match the calculated value, suggesting there may be an error in the calculation or the provided options. It might be necessary to verify the calculation steps or check if the options given contain a typographical error.