关键词: RBC aggregation RBC deformability erythrocyte hemorheology muscle strength obesity resistance training

来  源:   DOI:10.31083/j.rcm2407196   PDF(Pubmed)

Abstract:
UNASSIGNED: This study investigated the effects of 12-week resistance training on body composition, blood pressure, blood lipid levels, muscle cross-sectional area (CSA), isokinetic muscle function, and hemorheological properties in middle-aged obese women.
UNASSIGNED: Twenty-eight obese women with a mean age of 50.79 ± 5.80 years were randomly assigned to the control (CON, n = 13) or experimental (EXP, n = 15) group. The EXP group underwent a resistance training program composed of warm-up, main resistance exercise (deadlift, barbell squat, seated leg extension, and lying leg curl, bench press, preacher bench biceps curl, barbell rowing, and dumbbell shoulder press), and cool-down. The resistance exercise consisted of three sets of 8-10 repetitions (reps) performed with 70-80% of 1-rep maximum, and reps and sets were increased every 3 weeks. The training frequency was 80 min, 3 days per week for 12 weeks. The CON group maintained their daily lifestyle without training. All participants underwent measurements of body composition (weight, body mass index, lean body mass, fat mass, and % body fat), blood pressure (systolic blood pressure, diastolic blood pressure, mean arterial pressure, and pulse pressure), blood lipid levels (triglycerides, total cholesterol, high-density lipoprotein cholesterol, and low-density lipoprotein cholesterol), CSA of the muscles (quadriceps, hamstring, and total thigh muscle), isokinetic muscle function (peak torque [PT], relative PT, mean power, and total work [TW]), and hemorheological properties (erythrocyte deformability and aggregation) before and after 12 weeks of training.
UNASSIGNED: The EXP group showed a significant improved muscle function, including PT (p < 0.001), relative PT (p < 0.001) in extension 60°/s, TW (p < 0.001) in extension 180°/s, and TW (p = 0.018) in flexion 180°/s. Regarding hemorheological properties, the EXP group showed significant improvement in erythrocyte aggregation (p < 0.001) and deformability (p < 0.001).
UNASSIGNED: The present study verified that our resistance training program resulted in greater muscle function, decreased fat mass, and improved hemorheological properties.
UNASSIGNED: This study was registered with cris.nih.go.kr (No. KCT0007412).
摘要:
这项研究调查了12周阻力训练对身体成分的影响,血压,血脂水平,肌肉横截面积(CSA),等速肌功能,中年肥胖女性的血液流变学特性。
28名平均年龄为50.79±5.80岁的肥胖女性被随机分配到对照组(CON,n=13)或实验性(EXP,n=15)组。EXP组接受了由热身组成的阻力训练计划,主要阻力练习(硬拉,杠铃深蹲,坐式支腿延长,躺着的腿卷曲,台式压力机,传教士长凳二头肌卷曲,杠铃划船,和哑铃肩部按压),冷静下来.阻力练习包括三组8-10次重复(代表),最大1次重复的70-80%,每3周增加一次代表和集合。训练频率为80分钟,每周3天,共12周。CON小组在没有训练的情况下保持了他们的日常生活方式。所有参与者都进行了身体成分测量(体重,身体质量指数,瘦体重,脂肪量,和%身体脂肪),血压(收缩压,舒张压,平均动脉压,和脉压),血脂水平(甘油三酯,总胆固醇,高密度脂蛋白胆固醇,和低密度脂蛋白胆固醇),肌肉的CSA(股四头肌,腿筋,和总大腿肌肉),等速肌功能(峰值扭矩[PT],相对PT,平均力量,和总工作量[TW]),和12周训练前后的血液流变学特性(红细胞变形性和聚集性)。
EXP组肌肉功能明显改善,包括PT(p<0.001),延伸60°/s时的相对PT(p<0.001),TW(p<0.001)在延伸180°/s时,和TW(p=0.018),屈曲180°/s。关于血液流变学特性,EXP组红细胞聚集性(p<0.001)和变形性(p<0.001)显著改善.
本研究验证了我们的阻力训练计划导致更大的肌肉功能,脂肪量减少,和改善的血液流变学特性。
本研究注册了cris。nih.走吧。kr(编号KCT0007412).
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