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EFFECTS OF FUNCTIONAL ELECTRIC STIMULATION CYCLE ERGOMETRY TRAINING
ON LOWER LIMB MUSCULATURE IN ACUTE SCI INDIVIDUALS
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Timothy
J. Demchak1, Jon K. Linderman2
, W. Jerry Mysiw3, Rebecca Jackson4, Jihong
Suun4 and Steven T. Devor5 |
1Department of Athletic Training, Indiana State University,
Terre Haute, Indiana, USA
2Department of Health and Sport Science, School of Education
and Allied Professions, University of Dayton, Dayton, Ohio, USA
3Department of Internal Medicine, Division of Endocrinology
and Metabolism, The Ohio State University, Columbus, Ohio, USA
4Department of Physical Medicine & Rehabilitation., The
Ohio State University, Columbus, Ohio, USA
5Sport and Exercise Science Program, The Ohio State University,
Columbus, Ohio, USA
| Received |
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08 April 2005 |
| Accepted |
|
15
June 2005 |
| Published |
|
01
September 2005 |
©
Journal of Sports Science and Medicine (2005) 4, 263 - 271
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| ABSTRACT |
| The
effect of early intervention using functional electric stimulation
cycle ergometry (FES-CE) on skeletal muscle morphology was evaluated
in traumatic spinal cord injured (SCI) patients 4 - 6 weeks after
injury. Motor complete SCI patients (n = 10) were assigned to either
a SCI control group (IC) or FES-CE group (IE) and compared to uninjured
controls (UIC) matched for age, activity, and gender. Training via
FES-CE was performed 3 days/week for 13 weeks. In the FES-CE trained
group, power output increased from 2.4 ± .88 Watts to 24.5 ± 3.2 Watts.
Muscle biopsies were taken from the vastus lateralis muscle at pre-
and post-training for subsequent morphological analysis. Without intervention,
muscle fiber cross sectional area (CSAf ) decreased 38%
and 65% at 6 and 19 weeks post-SCI, respectively. The loss of CSAf
had no impact on myonuclear density. Following 13 weeks of FES-CE
training, CSAf increased was 63% greater when compared
to the IC group. Results of the present investigation suggest that
the initiation of FES-CE in first weeks after traumatic SCI attenuates
the loss of muscle mass and power output.
KEY
WORDS: Muscle atrophy, myosin heavy chain, myonuclei.
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