攝氧量(oxygen consumption , VO2)

From: Ma Nikko
Date: Oct 19, 2007 2:42 PM
Subject: 運動營養功課 輔大營養四 馬慧盈 493420613
10/12
攝氧量(oxygen consumption , VO2)
通常以L/Min或ml/kg/min或MET來表示(1個MET 相當於3.5 ml/kg/min ) 。 最大攝氧量 (VO2 max) 是有氧運動能力及體適能(Physical fitness ) 的最佳指標。

VO2 MaxFitness can be measured by the volume of oxygen you can consume while exercising at your maximum capacity. VO2 max is the maximum amount of oxygen in millilitres, one can use in one minute per kilogram of body weight. Those who are fit have higher VO2 max values and can exercise more intensely than those who are not as well conditioned. Numerous studies show that you can increase your VO2 max by working out at an intensity that raises your heart rate to between 65 and 85% of its maximum for at least 20 minutes three to five times a week. A mean value of VO2 max for male athletes is about 3.5 litres/minute and for female athletes it is about 2.7 litres/minute.

Factors affecting VO2 max
The physical limitations that restrict the rate at which energy can be released aerobically are dependent upon:

• the chemical ability of the muscular cellular tissue system to use oxygen in breaking down fuels
• the combined ability of cardiovascular and pulmonary systems to transport the oxygen to the muscular tissue system

資料來源:http://www.brianmac.co.uk/vo2max.htm

10/05補上次的功課~~
心得：
運動營養這一門課對我來說蠻新鮮的，相較於以前學過的營養學、生命期營養之類的基礎科目，運動營養是從知識面轉到運用面去～把營養的知識結合到運動上，感覺上又更生活化了！ 看過一堆運動營養的網站後，給我的感覺是，很多很多五花八門的營養素以及一些功能性食品都"好像"對運動員的所幫助，例如說抗氧化劑能提升運動員的運動水平等。但這一類型的研究似乎都很難找到實際的實驗証據去支持，也許是因為這一類研究的結果都比較難明顯地呈現出來（例如說補充了甚麼之後跳遠多了兩公分之類......@@？運動員的表現受太多因素影響 ) 大部研究結果都落得一個沒有顯注性差異，有待進一步研究的結論。所以對於運動員的飲食建議最終還是回歸到最基礎的"均衡攝取六大類食物"的大原則，感覺上運動營養的發展空間還很大呢～