Excessive antioxidant supplementation during training can have what effect on adaptations?

Excessive antioxidant supplementation during training can have what effect on adaptations?

• A. It always enhances training adaptations.
• B. It has no effect on adaptation.
• C. It synergizes with ROS to boost adaptation.
• D. Excessive antioxidant supplementation may blunt some adaptations.

Answer: (D)

When you train, your workload increases oxygen turnover and metabolism, producing reactive oxygen species (ROS). These ROS aren’t just damaging; they serve as signals that trigger the body's adaptation programs—like increasing mitochondrial content, boosting antioxidant defenses, and improving metabolic efficiency. If you flood the system with antioxidants at high doses, especially around training sessions, you blunt these ROS signals. That dampens the signaling pathways (such as those involving AMPK and PGC-1α) that normally drive adaptation, so the expected improvements are reduced. In short, excessive antioxidant supplementation can blunt some adaptations because it interferes with the protective, signaling role ROS play in response to exercise.

When you train, your workload increases oxygen turnover and metabolism, producing reactive oxygen species (ROS). These ROS aren’t just damaging; they serve as signals that trigger the body's adaptation programs—like increasing mitochondrial content, boosting antioxidant defenses, and improving metabolic efficiency. If you flood the system with antioxidants at high doses, especially around training sessions, you blunt these ROS signals. That dampens the signaling pathways (such as those involving AMPK and PGC-1α) that normally drive adaptation, so the expected improvements are reduced. In short, excessive antioxidant supplementation can blunt some adaptations because it interferes with the protective, signaling role ROS play in response to exercise.