VI.
RESISTANCE EXERCISE
Resistance
exercise defined as muscle movement against a
resistance such as weight is a potent anabolic
stimulus. Endurance exercise however does not preserve
lean mass. The mechanism remains unclear but is likely
the result of local muscle effects and an overall
systemic response. When initiated in the catabolic
state, resistance exercise diminishes the degree of
protein loss. Increasing lean body mass in the elderly
and chronically ill population by this approach can
markedly decrease disability. Large-muscle exercise
should be given priority, because this training can
significantly reduce muscle loss and accelerate gain. In
a burn injury or wound patient population in whom
catabolism is pronounced, an aggressive, early program
of resistance exercise that continues through the
recovery phase is of major importance as an additional
anabolic stimulus.
In
turn, lack of resistance exercise as occurs with bed
rest, a fixed splint or general inactivity will lead to
muscle atrophy (net catabolism) in addition to that
caused by the burn.
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Resistance
Exercise
- increased
muscle fiber stretch and force
- local
anabolic activity
- increased
muscle protein synthesis
- can
increase endogenous HGH
- preservation
of lean mass
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