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8. Alcohol_for class

8. Alcohol_for class - Control Alcohol 29 reduction – no...

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9/20/2011 1 Types of Muscular Contraction Isometric Concentric Eccentric Delayed-Onset Muscle Soreness (DOMS) rhombus6 Felt 12 to 48 hours after strenuous exercise rhombus6 Results primarily from eccentric action rhombus6 Theories: circle6 Muscle tissue damage circle6 Local inflammation circle6 Edema (accumulation of fluid in muscle) circle6 Connective tissue damage
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9/20/2011 2 DOMS and Performance rhombus6 DOMS reduces force-generating capacity of muscles rhombus6 Maximal force-generating capacity returns after days or weeks rhombus6 Muscle glycogen synthesis is impaired with DOMS 70 Eccentric contractions - 3 sec each - 12 sec rest
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9/20/2011 3 3 x 100 max eccentric contractions over 60 deg
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9/20/2011 4 30 min post exercise 1 g / kg = 212 ±51 ml ~8 shots (if you lived in the New Zealand) ~5 for US Drank over 90 min. Isometric 150 170 190 210 230 250 270 290 Pre 36 hr post 60 hr post N-m Damaged - No Alcohol Damaged - Alcohol
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Unformatted text preview: Control - Alcohol 29% reduction – no alcohol 41% reduction – alcohol ~12% greater reduction Concentric 120 140 160 180 200 220 240 Pre 36 hr post 60 hr post Damaged - No Alcohol Damaged - Alcohol Control - No Alcohol Control - Alcohol 32% reduction – no alcohol 43% reduction – alcohol ~11% greater reduction 9/20/2011 5 Eccentric 120 170 220 270 320 370 Pre 36 hr post 60 hr post N-m Damaged - No Alcohol Damaged - Alcohol Control - No Alcohol Control - Alcohol 26% reduction – no alcohol 45% reduction – alcohol ~19% greater reduction Mechanisms of Action • Interaction of Muscle contraction and central nervous system – neurotransmission • Sarcoplasmic Ca transport impaired with acute alcohol exposure therefore muscle contraction impaired • Impaired recovery process...
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