Journal
JOURNAL OF APPLIED PHYSIOLOGY
Volume 89, Issue 3, Pages 1072-1078Publisher
AMER PHYSIOLOGICAL SOC
DOI: 10.1152/jappl.2000.89.3.1072
Keywords
physical activity; aging; gender; magnetic resonance spectroscopy
Categories
Funding
- NIA NIH HHS [R29AG12819] Funding Source: Medline
- NATIONAL INSTITUTE ON AGING [R29AG012819] Funding Source: NIH RePORTER
Ask authors/readers for more resources
It has been suggested that a decline in skeletal muscle oxidative capacity is a general consequence of aging in humans. However, previous studies have not always controlled for the effects of varying levels of physical activity on muscle oxidative capacity. To test the hypothesis that, when matched for comparable habitual physical activity levels, there would be no age-related decline in the oxidative capacity of a locomotor muscle, the postexercise recovery time of phosphocreatine was compared in the tibialis anterior muscle of young [n = 19; 33.8 +/- 4.8 (SD) yr] and older [n = 18; 75.5 +/- 4.5 yr] healthy women and men of similar, relatively low, activity levels. The intramuscular metabolic measurements were accomplished by using phosphorus magnetic resonance spectroscopy. The results indicate that there was no age effect on the postexercise recovery time of phosphocreatine recovery. thus supporting the stated hypothesis. These data suggest that there is no requisite decline in skeletal muscle oxidative capacity with aging in humans, at least through the seventh decade.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available