Scott Christopher B
Sports Medicine Department, University of Southern Maine, Gorham, Maine 04038, USA.
J Strength Cond Res. 2006 May;20(2):404-11. doi: 10.1519/R-17495.1.
Bioenergetic interpretations of energy transfer specify that rapid anaerobic, substrate-level adenosine triphosphate (ATP) turnover with lactate production is not appropriately represented by an oxygen uptake measurement. Two types of weight training, 60% of 1 repetition maximum (1RM) with repetitions to exhaustion and 80% of 1RM with limited repetitions, were compared to determine if blood lactate measurements, as an estimate of rapid substrate-level ATP turnover, provide a significant contribution to the interpretation of total energy expenditure as compared with oxygen uptake methods alone. The measurement of total energy expenditure consisted of blood lactate, exercise oxygen uptake, and a modified excess postexercise oxygen consumption (EPOC); oxygen uptake-only measurements consisted of exercise oxygen uptake and EPOC. When data from male and female subjects were pooled, total energy expenditure was significantly higher for reps to exhaustion (arm curl, +27 kJ; bench press, +27 kJ; leg press, +38 kJ; p < 0.03) and limited reps (arm curl, +12 kJ; bench press, +23 kJ; leg press, + 24 kJ; p < 0.05) when a separate measure of blood lactate was part of the interpretation. When the data from men and women were analyzed separately, blood lactate often made a significant contribution to total energy expenditure for reps to exhaustion (endurance-type training), but this trend was not always statistically evident for the limited reps (strength-type training) protocol. It is suggested that the estimation of total energy expenditure for weight training is improved with the inclusion, rather than the omission, of an estimate of rapid anaerobic substrate-level ATP turnover.
能量转移的生物能量学解释表明，伴有乳酸生成的快速无氧底物水平三磷酸腺苷（ATP）周转不能通过摄氧量测量得到恰当体现。比较了两种类型的重量训练，即60%的1次重复最大重量（1RM）直至力竭的重复训练和80%的1RM有限次数的重复训练，以确定作为快速底物水平ATP周转估计值的血乳酸测量，与仅采用摄氧量方法相比，是否能对总能量消耗的解释做出显著贡献。总能量消耗的测量包括血乳酸、运动摄氧量和改良的运动后过量氧耗（EPOC）；仅摄氧量测量包括运动摄氧量和EPOC。当合并男性和女性受试者的数据时，在将血乳酸单独作为一项测量纳入解释时，直至力竭的重复训练（臂弯举，+27 kJ；卧推，+27 kJ；腿举，+38 kJ；p<0.03）和有限次数的重复训练（臂弯举，+12 kJ；卧推，+23 kJ；腿举，+24 kJ；p<0.05）的总能量消耗显著更高。当分别分析男性和女性的数据时，血乳酸通常对直至力竭的重复训练（耐力型训练）的总能量消耗有显著贡献，但对于有限次数的重复训练（力量型训练）方案，这种趋势并不总是在统计学上明显。建议在估计重量训练的总能量消耗时，纳入而非忽略快速无氧底物水平ATP周转的估计值会有所改善。
