In which stage of the cardio program would an obese client begin adapting to a higher intensity?

The correct choice indicates that an obese client would begin adapting to a higher intensity in Stage II of the cardio program. In Stage I, clients typically engage in low-intensity exercise designed primarily to improve basic cardiovascular fitness and endurance without overwhelming them physically. This stage is crucial for establishing a foundation.

Once clients have progressed to Stage II, they can start incorporating intervals of higher intensity into their training. This stage focuses on improving the client’s aerobic capacity and includes bouts of more challenging exercise interspersed with lower-intensity recovery periods. During this stage, clients can adapt to gradually increased intensity levels, making it suitable for those who have developed a sufficient fitness base but still need to prioritize safety and gradual progression.

Stage II allows for greater cardiovascular challenge without risking injury or excessive fatigue, which is particularly important for clients who may be dealing with obesity-related complications. Hence, the focus at this stage is on cardiovascular improvement and increased work capacity, aligning well with the goals of a weight loss program.