We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Exercise and Caloric Restriction Exert Different Benefits on Skeletal Muscle Metabolism in Aging Condition.
- Authors
Thonusin, Chanisa; Pantiya, Patcharapong; Kongkaew, Aphisek; Nawara, Wichwara; Arunsak, Busarin; Sriwichaiin, Sirawit; Chattipakorn, Nipon; Chattipakorn, Siriporn C.
- Abstract
Exercise and caloric restriction improve skeletal muscle metabolism. However, the benefits of exercise and caloric restriction on skeletal muscle metabolism in aging have never been compared. Seven-week-old male Wistar rats (n = 24) were divided into 4 groups (n = 6 per group) to receive either normal saline solution for 28 weeks, 150 mg/kg/day of D-galactose for 28 weeks to induce premature aging, 150 mg/kg/day of D-galactose for 28 weeks plus exercise for 16 weeks (week 13–28), or 150 mg/kg/day of D-galactose for 28 weeks plus 30% caloric restriction for 16 weeks (week 13–28). The 17-month-old rats (n = 6) were also injected with normal saline solution for 28 weeks as the naturally aged controls. At the end of week 28, total walking distance and fatty acid and carbohydrate oxidation during physical activity were determined. Then, all rats were euthanized for the collection of blood and tibialis anterior muscle. The results showed that D-galactose successfully mimicked the natural aging of skeletal muscle. Exercise and caloric restriction equally improved carbohydrate oxidation during physical activity and myogenesis. However, exercise was superior to caloric restriction in terms of improving fatty acid oxidation and oxidative phosphorylation. Interestingly, caloric restriction decreased oxidative stress, whereas exercise increased oxidative stress of skeletal muscle. All of these findings indicated that the benefits of exercise and caloric restriction on skeletal muscle metabolism during aging were different, and therefore the combination of exercise and caloric restriction might provide greater efficacy in ameliorating skeletal muscle aging.
- Subjects
SKELETAL muscle; ACTIVE aging; ANIMAL experimentation; TIME; REDUCING diets; GALACTOSEMIA; RATS; COMPARATIVE studies; PHYSICAL activity; OXIDATIVE stress; TREATMENT effectiveness; AGING; HEALTH behavior; DESCRIPTIVE statistics; RESEARCH funding; EXERCISE therapy; OXIDATION-reduction reaction; FATTY acids; PHOSPHORYLATION
- Publication
Nutrients, 2023, Vol 15, Issue 23, p5004
- ISSN
2072-6643
- Publication type
Article
- DOI
10.3390/nu15235004