Which of the following is NOT a benefit of cardiorespiratory training?

Cardiorespiratory training, which includes activities such as running, cycling, and swimming, primarily enhances the efficiency of the cardiovascular and respiratory systems. The benefits associated with this type of training include an increase in stroke volume, which is the amount of blood the heart pumps with each beat, and a reduction in resting heart rate, reflecting improved heart efficiency. Additionally, cardiorespiratory training also promotes increased capillary density, allowing for better oxygen and nutrient delivery to muscles and more effective removal of waste products.

In contrast, improved muscle mass is not a direct benefit of cardiorespiratory training. While cardiovascular exercises can contribute to overall fitness and body composition, building muscle mass is typically associated with resistance training or strength training. These types of exercises focus more on the development of muscle strength and size through targeted resistance rather than enhancing aerobic capacity. Therefore, improved muscle mass is not inherently a benefit of cardiorespiratory training.