Bangsbo J
Copenhagen Muscle Research Centre, August Krogh Institute, University of Copenhagen, Denmark.
Sports Med. 1996 Nov;22(5):299-305. doi: 10.2165/00007256-199622050-00003.
Information about mechanical efficiency during intense exercise is limited, which is partly due to the difficulties that exist in quantifying anaerobic energy production. Based on human studies examining the isolated quadriceps muscle, the mechanical efficiency during intense dynamic exercise has been estimated to be around 22 to 26%. For cycling, the mechanical efficiency shows a wider range (14 to 34%) which, to a large extent, can be attributed to the uncertainties regarding the mass of the muscles used and whether muscle biopsy material is representative for the muscles involved in the exercise. Data from studies of the isolated quadriceps muscle suggest that mechanical efficiency increases as intense exercise is continued and that mechanical efficiency is greater when high intensity exercise is repeated, even with a rest period of 1 hour between exercise bouts. It is unclear whether a period of training can affect mechanical efficiency during intense exercise.
关于剧烈运动期间机械效率的信息有限，部分原因在于量化无氧能量产生存在困难。基于对分离的股四头肌进行研究的人体实验，剧烈动态运动期间的机械效率估计约为22%至26%。对于骑自行车，机械效率的范围更广（14%至34%），这在很大程度上可归因于所用肌肉质量以及肌肉活检材料是否能代表运动中涉及的肌肉存在不确定性。对分离的股四头肌的研究数据表明，随着剧烈运动的持续，机械效率会提高，并且即使在运动回合之间有1小时的休息时间，重复进行高强度运动时机械效率也更高。目前尚不清楚一段时间的训练是否会影响剧烈运动期间的机械效率。
