INFLUENCE OF STRENGTH TRAINING ON DISTRIBUTION OF TRUNK AND APPENDICULAR MUSCLE MASS
T. Abe, J.P. Loenneke, K. Kojima, R.S. Thiebaud, C.A. Fahs, O. Sekiguchi
J Aging Res Clin Practice 2014;3(1):28-30
Strength training can increase skeletal muscle mass (SM), however, the hypertrophic responses between trunk and limb muscles may differ. This may be problematic because dual-energy X-ray absorptiometry (DXA)-derived appendicular lean mass (aLM) does not include trunk SM. Thus, the purpose was to compare trunk and limb SM (measured by magnetic resonance imaging) between weightlifters (WL) and moderately active men (CON). With the exception of lower-leg SM, WL had greater total and segmental SM than CON. Relative SM, such as trunk to total SM ratio, was greater in WL than in CON. Because trunk SM includes the shoulder and hip joints muscles, we reanalyzed major individual muscles of only three subjects (two in CON group and one in WL group). Although WL had greater trunk SM, the DXA-determined aLM does contain these muscles. Thus, these results suggest that the DXA may be used to track SM adaptations to chronic strength training.
T. Abe ; J.P. Loenneke ; K. Kojima ; R.S. Thiebaud ; C.A. Fahs ; O. Sekiguchi (2014): INFLUENCE OF STRENGTH TRAINING ON DISTRIBUTION OF TRUNK AND APPENDICULAR MUSCLE MASS. The Journal of Aging Research and Clinical Practice (JARCP). http://dx.doi.org/10.14283/jarcp.2014.6