Which of the following best describes reversibility of conditioning gains?

• A. Gains fade only for endurance.
• B. Gains fade without continued training.
• C. Gains never fade.
• D. Gains fade only for strength.

Answer: (B)

Reversibility of conditioning gains means that the improvements seen from training don’t stay forever unless the training stimulus continues. When conditioning stops, the body no longer has a reason to maintain the enhanced cardiovascular, muscular, and neuromuscular adaptations, so performance tends to regress toward pretraining levels. The pace varies by system: endurance-related changes like mitochondrial density and oxidative enzymes can decline fairly quickly, while strength and skill-based adaptations may persist a bit longer but still fade without regular loading and practice. In Military Working Dogs, this translates to stamina and performance diminishing without ongoing conditioning, even though some basic skills or memory of tasks may linger—overall, the gains wash out without continued training.