Department of Sports Medicine and Biology of Physical Activity, Faculty of Physical Education and Sports Sciences, University of Athens , Greece.
J Sports Sci Med. 2010 Dec 1;9(4):580-6. eCollection 2010.
The effect of resistance exercise on blood lipids is not clear yet. The purpose of this study was to examine the cholesterol responses to a heavy resistance leg press exercise emphasizing on the eccentric movement 24 and 48 hours following exercise and to quantify the cardiorespiratory responses of the exercise bout in an attempt to clarify the exercise characteristics that may be responsible for the effects of heavy resistance exercise on blood lipids. Nine healthy, untrained male volunteers aged 27.2 ± 1.1 yrs (76.2 ± 2.5 kg, 1.79 ± 0.02 m) performed a session of heavy RE emphasizing on the eccentric movement consisting of eight sets of inclined leg presses at six repetition maximum with 3-min rest intervals. Venous blood samples were obtained at rest (control) and 24 and 48 hours following exercise. Average VO2 at rest was 4.0 ± 0.4 ml·min(-1)·kg(-1), during exercise 19.6 ± 0.2 ml·min(-1)·kg(-1) and during the 180 sec recovery period between sets 12.5 ± 0.2 ml·min(-1)·kg(-1). RER values decreased with the progression of the exercise and were significantly lower during the last four sets compared with the first four sets of the exercise session. Resting heart rate was 67 ± 2 bpm, and maximum heart rate during exercise was 168 ± 1 bpm. Serum creatine kinase was significantly elevated on day 1 (1090 ± 272 U·L(-1), p < 0.03) and peaked on day 2 (1230 ± 440 U·L(-1) p < 0. 01). Total cholesterol, HDL cholesterol and calculated LDL cholesterol concentration did not change significantly following with exercise. This protocol of heavy resistance exercise has no effect on TC or cholesterol sub-fraction concentration 24 and 48 hours following exercise which may be due to the low energy expenditure of the exercise and/or to the gender of the participants. Key pointsRepeated sets of heavy resistance exercise significantly increase oxygen uptake both during exercise and the following recovery period.Even though exercise was of low volume (8 sets x 6 repetitions) the elevated oxygen uptake during the rest intervals in combination with the total exercise session duration (26 min) resulted in aerobic energy expenditure that is equivalent to low to moderate intensity cycling.Leg press resistance exercise emphasizing on the eccentric movement that caused muscle damage had no effect on total cholesterol, HDL-C and LDL-C during the two days following exercise in young healthy male subjects.
抗阻运动对血脂的影响尚不清楚。本研究的目的是检测大强度抗阻蹬腿运动后 24 小时和 48 小时的胆固醇反应，并量化运动过程中的心肺反应，试图阐明可能导致大强度抗阻运动对血脂产生影响的运动特征。9 名健康、未经训练的男性志愿者（年龄 27.2 ± 1.1 岁，体重 76.2 ± 2.5kg，身高 1.79 ± 0.02m）进行了一次强调离心运动的大强度抗阻运动，包括 8 组倾斜蹬腿运动，每组重复 6 次，每组之间休息 3 分钟。在休息（对照）时和运动后 24 小时和 48 小时采集静脉血样本。休息时平均 VO2 为 4.0 ± 0.4ml·min(-1)·kg(-1)，运动时为 19.6 ± 0.2ml·min(-1)·kg(-1)，每组之间的 180 秒恢复期内为 12.5 ± 0.2ml·min(-1)·kg(-1)。呼吸商随着运动的进行而降低，与运动课的前四组相比，最后四组明显较低。静息心率为 67 ± 2bpm，运动时最大心率为 168 ± 1bpm。血清肌酸激酶在第 1 天（1090 ± 272U·L(-1)，p < 0.03）显著升高，并在第 2 天（1230 ± 440U·L(-1)，p < 0.01）达到峰值。运动后总胆固醇、高密度脂蛋白胆固醇和计算的 LDL 胆固醇浓度无明显变化。这种大强度抗阻运动方案在运动后 24 小时和 48 小时对 TC 或胆固醇亚组分浓度没有影响，这可能是由于运动的能量消耗低和/或参与者的性别。关键点：重复的大强度抗阻运动组在运动中和随后的恢复期都会显著增加摄氧量。尽管运动量（8 组 x 6 次重复）较低，但在休息期间增加的摄氧量与整个运动课的持续时间（26 分钟）相结合，导致了相当于低至中等强度自行车运动的有氧能量消耗。强调离心运动的腿推抗阻运动导致肌肉损伤，但在年轻健康男性受试者运动后的两天内，对总胆固醇、高密度脂蛋白胆固醇和低密度脂蛋白胆固醇没有影响。
