Final answer:
The statement , "B. In general, it is necessary to exercise at least five times a week to obtain adaptation changes in the cardiorespiratory system". This statement about the frequency of cardiorespiratory training is "FALSE".
Step-by-step explanation:
The frequency of cardiorespiratory training depends on individual fitness goals and the intensity of the exercise. While the other statements provide accurate information, "statement B" suggests that adaptation changes in the cardiorespiratory system necessarily require exercising at least five times a week, which is not universally true.
The American College of Sports Medicine (ACSM) recommends a minimum of 150 minutes of moderate-intensity exercise per week for general health benefits, which could be achieved through three sessions per week, lasting approximately 50 minutes each. However, the frequency can vary based on the intensity of the exercise. Higher-intensity workouts may require less frequency.
The principle of overload, mentioned in statement D, is indeed important for cardiorespiratory fitness. This principle involves progressively increasing the intensity or duration of exercise to continue challenging the cardiovascular and respiratory systems, promoting adaptations and improvements.
In summary, while exercising five times a week may be beneficial for certain fitness goals, it is not a strict requirement for obtaining cardiorespiratory adaptations. The optimal frequency depends on individual factors, including fitness level, intensity of exercise, and specific health objectives.