目的:衰老经常引起身体成分的变化,例如力量和肌肉质量的损失以及脂肪质量的增加。运动训练计划已被建议作为减轻或防止与年龄相关的身体组成下降的有效策略。因此,这项研究检查了16周的高速阻力训练(HSRT)计划对社区居住的独立老年人身体成分参数的影响。
方法:本临床试验包括79名老年人,将其分为两组:干预组(IG,N=40岁,68.50±3.54年;体重,68.65±11.36kg)和对照组(CG,N=39岁,72.08±5.89岁;体重,67.04±10.69kg)。IG进行了16周的监督HSRT,每周60-70分钟3次,每节5-6个练习,2-3套,和6-10个代表/练习,而CG没有执行任何运动训练计划。使用多频四极生物电阻抗分析仪(InBody®S10)评估身体组成参数。通过国际身体活动问卷(IPAQ-SF)和食物频率问卷评估身体活动水平和饮食摄入量,分别。使用协方差分析(ANCOVA)进行统计分析,和效果大小(科恩的邓迪偏见)。
结果:分析显示IG组因素对相位角的显着影响(F(1)=14.39,p<0.001,η2p=0.159)。此外,从Δ变化的结果(后减前值)揭示了小和中等效应有利于IG的体细胞质量(t(77)=1.21,p=0.230,dunb=0.27[-0.17,0.71])和相位角(t(77)=2.82,p=0.006,dunb=0.63[0.18,1.08]),分别。
结论:HSRT可以有效预防老年人细胞健康和细胞完整性的下降,相位角的显著改善证明了这一点。
背景:Clinicaltrial.gov(ID:NCT05586087)。
OBJECTIVE: Aging frequently causes changes in body composition, such as a loss of strength and muscular mass and an increase in fat mass. Exercise training programs have been suggested as effective strategies to mitigate or prevent age-related declines in body composition. Therefore, this study examined the effects of a sixteen-week High-Speed Resistance Training (HSRT) program on body composition parameters in community-dwelling independent older adults.
METHODS: The present clinical trial included 79 older adults, who were divided into two groups: intervention group (IG, N = 40, age, 68.50 ± 3.54 years; weight, 68.65 ± 11.36 kg) and control group (CG, N = 39, age, 72.08 ± 5.89 years; weight, 67.04 ± 10.69 kg). IG performed the supervised HSRT for 16 weeks, with 3 sessions per week of 60-70min, each session of 5-6 exercises, 2-3 sets, and 6-10 reps/exercise, while CG did not perform any exercise training program. Body composition parameters were assessed using a multifrequency tetrapolar bioelectrical impedance analyzer (InBody® S10). The level of physical activity and the dietary intake were evaluated by the International Physical Activity Questionnaire (IPAQ-SF) and the Food Frequency Questionnaire, respectively. Statistical analyses were performed using the analysis of covariance (ANCOVA), and effect size (Cohen\'s dunbiased).
RESULTS: The analysis showed significant effects of the group factor for IG on phase angle (F(1) = 14.39, p < 0.001, η2p = 0.159). Additionally, results from Δ changes (post-minus pre-values) revealed small and medium effects in favor to IG for body cell mass (t(77) = 1.21, p = 0.230, dunb = 0.27 [-0.17, 0.71]) and phase angle (t(77) = 2.82, p = 0.006, dunb = 0.63 [0.18, 1.08]), respectively.
CONCLUSIONS: The HSRT could effectively prevent the decline in cellular health and cell integrity in older adults, as evidenced by the significant improvements in the phase angle.
BACKGROUND: Clinicaltrial.gov (ID: NCT05586087).