What is the maximal heart rate (MHR) recommendation for an obese client in NASM's "stage I" cardio program?

For an obese client participating in NASM's "stage I" cardio program, the recommendation for maximal heart rate (MHR) is set at a range of 65-75%. This range is carefully selected to accommodate the individual's current fitness level and to promote cardiovascular improvements without overexertion, which is crucial for clients who may have limited physical capabilities or who are new to exercise.

Stage I cardio training is designed to enhance aerobic capacity while ensuring safety and comfort. By maintaining exercise intensity within this heart rate range, clients can achieve effective workouts that encourage adherence by minimizing fatigue and discomfort. This gradually builds their fitness level, allowing them to progress to higher intensities in the future. Safe and effective training is key to weight loss and overall health improvements in this population.

The other options represent higher intensity levels that are generally suitable for more conditioned individuals, which may not be appropriate for obese clients just starting out in their fitness journey.