因此,就塑身而言,運動完了後39分鐘內是攝取正參的"黃金時段".至於證據在哪裡?早期的
動物實驗發現(Suszuki et al. 1999),運動後立即提供實物與拖延4小時後給等熱量食物
,10星期後雖在體重上無明顯差異,但對於動物的身材卻造成明顯的改變:運動後立即補充 實務的動物脂肪組織脂重量較對照組低24%;反之肌肉組織重量增高.顯然運動後肌肉對於 養分競爭力的暫時升高,對於身體能源分配儲存造成明顯的影響,剝奪了脂肪組織吸收能源 的機會,長期下來改變了動物的身材.
同樣的,在人體的實驗部分也發現運動後肌肉組織對於醣類的吸收儲存能力(Ivy, et al.
1988)與對蛋白質的合成能力(Levenhagen et al. 2001)均暫時增加,但這兩個優勢在兩小
時後即明顯消退.然而肌肉對三酸甘油脂的吸收儲存能力的增加卻可維持超過6小時
(Malkova et al. 2000).
This training improved your aerobic fitness. It also improved the endurance of the working muscles by enhancing blood circulation to them. It began to increase your anaerobic tolerance and develop the speed you can maintain without building up lactic acid. Carbohydrates are the main energy source that your body uses at this training intensity.
上年六月十一日.
Fitness level 41 ,
Your fitness level is moderate compared to those with same age and gender. If you keep on exercising as you have so far, you will maintain this level. To improve your fitness further, increase the amount and intensity of your exercise sessions and you are likely to see progress!
今年一月廿四日
Fitness level 49
Your fitness level is very good compared to those with the same age and gender. You are probably already training a lot. If you still want to achieve better fitness and improve your performance, you can increase your total training amount, intensity and frequency in your routine.