Which of the following describes a sign of glute fatigue during training?

The correct answer describes a crucial indicator of glute fatigue during training. When muscles, including the glutes, become fatigued, it often results in the inability to maintain proper form or control during exercises. This is significant because compensatory movements typically arise when the primary muscles involved are not able to perform effectively. For example, if the glutes fatigue, other muscle groups may take over to help with the exercise, which can lead to improper mechanics and a higher risk of injury. Recognizing this sign is important for trainers and athletes alike, as it emphasizes the need to monitor fatigue levels and ensure that exercises are performed with the right technique to prevent long-term issues.

The other options, while they may relate to overall training and performance, do not accurately reflect the signs of glute fatigue. A feeling of warmth may arise from increased blood flow during any strenuous activity, but it doesn't specifically indicate fatigue. Increased ability to perform more repetitions and increased endurance during workouts suggest enhanced strength and conditioning, which would be contrary to signs of fatigue in muscles.