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主題:肌酸與長跑有關嗎
發言 : 小飛 時間 : 06/01/19(17:04:17) From : 218.160.44.238
我是中距離選手 在一個月就要比賽了 我開始服用肌酸 只是想說能不能增加肌肉持久力 換來更好的成績 我想了解 肌酸與長跑有關嗎


回應 : 6 scwang時間 : 2006/2/7 下午 09:56:56 From : 203.187.37.126

J Appl Physiol 92: 2571-2577, 2002.
Effect of creatine supplementation on oxygen uptake kinetics during submaximal cycle exercise
Andrew M. Jones1, Helen Carter2, Jamie S. M. Pringle1, and Iain T. Campbell3
1 Department of Exercise and Sport Science, Manchester Metropolitan University, Alsager ST7 2HL; 2 School of Sport, Exercise and Leisure, University of Surrey Roehampton, London SW15 3SN; and 3 University Department of Anaesthesia, Withington Hospital, Manchester M20 2LR, United Kingdom

The purpose of this study was to test the effect of oral creatine (Cr) supplementation on pulmonary oxygen uptake (O2) kinetics during moderate [below ventilatory threshold (VT)] and heavy (above VT) submaximal cycle exercise. Nine subjects (7 men; means ± SD: age 28 ± 3 yr, body mass 73.2 ± 5.6 kg, maximal O2 46.4 ± 8.0 ml · kg1 · min1) volunteered to participate in this study. Subjects performed transitions of 6-min duration from unloaded cycling to moderate (80% VT; 8-12 repeats) and heavy exercise (50% change; i.e., halfway between VT and maximal O2; 4-6 repeats), both in the control condition and after Cr loading, in a crossover design. The Cr loading regimen involved oral consumption of 20 g/day of Cr monohydrate for 5 days, followed by a maintenance dose of 5 g/day thereafter. O2 was measured breath by breath and modeled by using two (moderate) or three (heavy) exponential terms. For moderate exercise, there were no differences in the parameters of the O2 kinetic response between control and Cr-loaded conditions. For heavy exercise, the time-based parameters of the O2 response were unchanged, but the amplitude of the primary component was significantly reduced with Cr loading (means ± SE: control 2.00 ± 0.12 l/min; Cr loaded 1.92 ± 0.10 l/min; P < 0.05) as was the end-exercise O2 (control 2.19 ± 0.13 l/min; Cr loaded 2.12 ± 0.14 l/min; P < 0.05). The magnitude of the reduction in submaximal O2 with Cr loading was significantly correlated with the percentage of type II fibers in the vastus lateralis (r = 0.87; P < 0.01; n = 7), indicating that the effect might be related to changes in motor unit recruitment patterns or the volume of muscle activated.

In conclusion, this study has shown that Cr loading causes a small but significant reduction in O2 during heavy, but not moderate, submaximal exercise, with no change in the primary time constant. The reduction in O2 was present at the end of the primary component and persisted throughout the exercise bout. It is possible that Cr loading influences motor unit recruitment patterns or the volume of muscle mass recruited during heavy submaximal exercise, but additional studies are needed to clarify the mechanism responsible for this effect.


回應 : 7 scwang時間 : 2006/2/7 下午 10:00:59 From : 203.187.37.126

Effect of creatine loading and prolonged creatine supplementation on body composition, fuel selection, sprint and endurance performance in …

對於網友「小飛」的問題來看:「一個月就要比賽了 我開始服用肌酸 」我的建議還是不要比較好!

為了可以在訓練時得到較佳的間歇訓練成效,服用肌酸的結果,並不能在比賽時以間歇的方式參與比賽。「小飛」如果已經服用了,那麼可以考慮馬上停止使用。


回應 : 8 小飛時間 : 2006/2/10 上午 11:37:12 From : 218.160.40.185

那我就先不要服用基酸好了



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