Females are unable to maintain a high level of cardiorespiratory fitness

There are little differences between a man and a woman’s body and their internal organs too, therefore, a woman has no reason that she could not do what a man can do. Thus, the statement "Females are unable to maintain a high level of cardiorespiratory fitness." is false, hence, it has nothing to do with the gender.

You would modify how often you work out in reps and sets and also modify calorie intake