Post by John A. Casler on Oct 4, 2008 7:04:55 GMT -8
====================
Jamie Carruthers/SUPERTRAINING
====================
The below study shows that regular physical activity prevents both
the age-associated loss of muscle strength and increase in muscle fat
infiltration in older adults with moderate functional limitations.
Effects of Physical Activity on Strength and Skeletal Muscle Fat
Infiltration in Older Adults: A Randomized Controlled Trial
Bret H. Goodpaster1*, Peter J. Chomentowski 3rd1, Bryan K. Ward1,
Andrea Rossi1, Nancy W. Glynn1, Matthew J. Delmonico2, Stephen B.
Kritchevsky3, Marco Pahor4, and Anne B. Newman5
J Appl Physiol (September 25, 2008).
doi:10.1152/japplphysiol.90425.2008
Considerable evidence suggests that the loss of strength and muscle
mass appear to be inevitable consequences of aging. Moreover, aging
is associated with an increase in body fat. This study examined
whether increased physical activity could prevent or reverse the
losses of strength and skeletal muscle mass as well as the gain in
fat in older adults.
Eleven men and 31 women completed a randomized trial consisting of
either a physical activity (PA; N=22) or successful aging health
educational control (SA; N=20) group. Isokinetic knee extensor
strength, and CT-derived mid-thigh skeletal muscle and adipose tissue
cross-sectional areas (CSA) were assessed at baseline and at 12
months following randomization. Total body weight and muscle CSA
decreased in both groups, but these losses were not different between
groups. Strength adjusted for muscle mass decreased (-20.1 ± 9.3%,
P<0.05) in SA. The loss of strength was completely prevented in PA
(+2.5 ± 8.3%). In addition, there was a significant increase (18.4 ±
6.0%) in muscle fat infiltration in SA, but this gain was nearly
completely prevented in PA (2.3 ± 5.7%).
In conclusion, regular physical activity prevents both the age-
associated loss of muscle strength and increase in muscle fat
infiltration in older adults with moderate functional limitations.
====================
Jamie Carruthers
Wakefield, UK
Jamie Carruthers/SUPERTRAINING
====================
The below study shows that regular physical activity prevents both
the age-associated loss of muscle strength and increase in muscle fat
infiltration in older adults with moderate functional limitations.
Effects of Physical Activity on Strength and Skeletal Muscle Fat
Infiltration in Older Adults: A Randomized Controlled Trial
Bret H. Goodpaster1*, Peter J. Chomentowski 3rd1, Bryan K. Ward1,
Andrea Rossi1, Nancy W. Glynn1, Matthew J. Delmonico2, Stephen B.
Kritchevsky3, Marco Pahor4, and Anne B. Newman5
J Appl Physiol (September 25, 2008).
doi:10.1152/japplphysiol.90425.2008
Considerable evidence suggests that the loss of strength and muscle
mass appear to be inevitable consequences of aging. Moreover, aging
is associated with an increase in body fat. This study examined
whether increased physical activity could prevent or reverse the
losses of strength and skeletal muscle mass as well as the gain in
fat in older adults.
Eleven men and 31 women completed a randomized trial consisting of
either a physical activity (PA; N=22) or successful aging health
educational control (SA; N=20) group. Isokinetic knee extensor
strength, and CT-derived mid-thigh skeletal muscle and adipose tissue
cross-sectional areas (CSA) were assessed at baseline and at 12
months following randomization. Total body weight and muscle CSA
decreased in both groups, but these losses were not different between
groups. Strength adjusted for muscle mass decreased (-20.1 ± 9.3%,
P<0.05) in SA. The loss of strength was completely prevented in PA
(+2.5 ± 8.3%). In addition, there was a significant increase (18.4 ±
6.0%) in muscle fat infiltration in SA, but this gain was nearly
completely prevented in PA (2.3 ± 5.7%).
In conclusion, regular physical activity prevents both the age-
associated loss of muscle strength and increase in muscle fat
infiltration in older adults with moderate functional limitations.
====================
Jamie Carruthers
Wakefield, UK