Department of Kinesiology & Physical Education, Wilfrid Laurier University , Waterloo ON, Canada.
J Sports Sci Med. 2003 Sep 1;2(3):117-22. eCollection 2003 Sep.
The influence of gender on aerobic energy expenditure (EE) during weight training has not been systematically researched. We determined the absolute and relative EE during the performance of two weight training programs of different intensities, durations and total work in males and females. Eight male and seven female recreational weight trainers (20-29 y) completed two randomly ordered weight training sessions involving 2 sets of 8 standard upper and lower body lifts at a set cadence separated by 45 seconds rest between sets and lifts (48 hrs apart). Heavy (H) at 100% 8 Repetition Maximum (8RM), 8 reps, ~19 min duration and light (L) at 85% 8RM, 15 reps, ~23 min duration. VO2 was determined continuously throughout the training sessions. Lean body mass (LBM) was estimated from skin fold measures and body weight. Energy expenditure was estimated from breath-by-breath metabolic measurements using portable metabolic assessment equipment (Cosmed K4b(2)). Absolute EE (total kJ) and rate of energy expenditure per minute (kJ per min) were not significantly different between H and L intensities and male and female subjects. The rate of EE averaged between approximately 10-12 kJ per min. However, relative EE (J per kg LBM per min per unit work) were significantly higher (p < 0.02) for females compared to males in both H: (26.46±8.06 females vs 14.36±3.02 males) and L: (19.91±4.28 females vs. 9.83±3.28 males), intensities. It was concluded that females rely on a greater relative aerobic EE than males when performing recreational type weight lifting programs.
性别对力量训练时有氧能量消耗（EE）的影响尚未得到系统研究。我们确定了男性和女性在两种不同强度、持续时间和总工作量的力量训练计划中进行运动时的绝对和相对 EE。8 名男性和 7 名女性休闲举重运动员（20-29 岁）完成了两项随机排序的力量训练课程，涉及在 45 秒的组间休息和组间休息之间完成 8 组 8 个标准上下身举重（相隔 48 小时）。重（H）为 100% 8 重复最大（8RM），8 次重复，19 分钟，轻（L）为 85% 8RM，15 次重复，23 分钟。整个训练过程中连续测量 VO2。瘦体重（LBM）由皮褶测量和体重估算。使用便携式代谢评估设备（Cosmed K4b(2)）通过呼吸代谢测量来估算能量消耗。H 和 L 强度以及男性和女性受试者之间的绝对 EE（总 kJ）和每分钟能量消耗率（kJ/min）没有显着差异。EE 率平均在 10-12 kJ/min 之间。然而，与男性相比，女性在 H 和 L 强度下的相对 EE（每公斤瘦体重每分每单位工作的 J）显着更高（p < 0.02）：（26.46±8.06 女性 vs 14.36±3.02 男性）和 L：（19.91±4.28 女性 vs. 9.83±3.28 男性）。结论是，女性在进行休闲型举重训练计划时，依赖于比男性更大的相对有氧 EE。
