Answer :
Final answer:
The method to estimate a client's maximum heart rate is by a) subtracting the client's age from 220, which helps in determining safe and effective workout intensities.
Explanation:
The correct method is a) subtracting the client's age from 220. This standardized formula, 220 - age, is widely recognized and employed to estimate an individual's maximum heart rate (MHR), which successfully indicates the maximum number of beats per minute (bpm) the heart can achieve during intense physical activity. For example, for a client who is 50 years old, the estimated maximum heart rate would be calculated as 220 - 50 = 170 bpm. Understanding one's MHR is vital for determining the target heart rate (THR) zones, which are generally set between 50 to 70% of the MHR for moderate-intensity activities. This methodology not only helps in creating effective cardiovascular training programs but also in monitoring the intensity of workouts to ensure they are safe and within the recommended heart rate limits.