Which of the following hormonal responses is associated with resistance training?

The correct choice highlights that cortisol tends to be low during short bouts of resistance training. Cortisol is a glucocorticoid hormone released during times of stress, including physical exertion and exercise. In the context of short-duration, high-intensity resistance training sessions, cortisol levels may not rise significantly because these training sessions typically involve short bursts of effort followed by recovery periods. This intermittent nature allows the body to manage stress and recovery effectively, keeping cortisol levels relatively low.

In contrast, prolonged or extended periods of intense exercise can lead to increased cortisol levels due to metabolic demands and stress on the body, which is often why the management of training intensity, duration, and recovery is crucial for performance and muscle preservation. Understanding how cortisol behaves during different types of training helps in optimizing performance and recovery strategies.

The explanations for the other options involve hormonal dynamics that are either not typically observed with resistance training or are misrepresentations of how these hormones behave during exercise, which are less applicable in this context.