ठंडे वातावरण में व्यायाम के प्रति अनुकूलन (Acclimatization) में निम्नलिखित में से किस शारीरिक अनुकूलन को छोड़कर बाकी सभी शामिल हैं?

The gradual decrease in VO2 max commonly observed with aging and physical inactivity is primarily explained by a reduction in which of the following physiological factors? A. Total lung capacity B. Maximum heart rate C. Arterial-mixed venous oxygen difference D. Lactate threshold E. Maximal stroke volume Choose the correct answer from the options given below:

Which physiological response is most likely to occur during the early phase of rehabilitation following immobilization?