The Antioxidant Paradox: High-Dose Vitamins Blunt Exercise Adaptations in Older Adults
The review finds that high‑dose vitamin C and E combined with collagen blunt exercise‑induced muscle growth, bone density gains, and neuroprotective adaptations in older adults, while moderate doses support structural health. Randomized trials show lean‑mass increases of only 1.4 % versus 3.9 % in placebo when antioxidants are taken in supraphysiologic amounts. Timing matters: 10‑30 g collagen with 500‑1000 mg vitamin C before training aids tendon remodeling, and vitamin E should stay below 400 mg and be separated from workouts. The paper advocates a nuanced, context‑dependent supplementation strategy.
Leisure Activity Boosts Strength, Fitness in Older Adults
A 2026 cross‑sectional study in BMC Geriatrics examined community‑dwelling seniors and found that moderate‑to‑vigorous leisure‑time physical activity significantly improves muscle strength and functional fitness. Participants who engaged in weight‑bearing or resistance exercises showed higher grip strength, better balance, and faster...