Gerhart Hayden, Tai Yu Lun, Fennell Curtis, Mayo Xián, Kingsley J Derek
Cardiovascular Dynamics Laboratory, Kent State University, Kent OH, USA; Kinesiology, Health, and Sport Science, Indiana University of Pennsylvania, Indiana PA, USA.
Cardiovascular Dynamics Laboratory, Kent State University, Kent OH, USA.
Int J Exerc Sci. 2017 Mar 1;10(2):178-187. doi: 10.70252/VJFF5546. eCollection 2017.
It is unclear if resistance training (RT) can be used to alter declines in autonomic modulation associated with aging. Young women (YW; range 18-25 yrs) and older women (OW; range 50-72 yrs) were compared at baseline. Only OW underwent supervised RT 2 days a week for 12-weeks. Baseline and post-training measurements included heart rate variability (HRV) and complexity (Sample Entropy) to assess autonomic modulation. The 12-weeks of RT consisted of 9 exercises performing 3 sets of 8-12 repetitions. At baseline, group differences in maximal strength, and autonomic modulation were evaluated with a one-way ANOVA with BMI as a covariate. In the OW, the effects of RT were evaluated with repeated-measures ANOVA in order to compare baseline to after RT. The YW had significantly (p≤0.05) lower diastolic, but not systolic blood pressure. The YW also had significantly (p≤0.05) greater absolute Ln (natural logarithm) high-frequency (HF) power and normalized HF power compared to the OW. In addition, there were significantly (p≤0.05) greater levels of normalized low-frequency power (LF) (and the LF/HF ratio) in the OW compared to the YW before RT. However, no difference was found for Sample Entropy. After RT, OW significantly (p≤0.05) increased the chest press (28%) and leg extension (33%). RT had no significant effect on any autonomic parameter suggesting that it may not be a sufficient stimulus to alter the effects of aging.
尚不清楚抗阻训练（RT）是否可用于改变与衰老相关的自主神经调节功能衰退。在基线期对年轻女性（YW；年龄范围18 - 25岁）和老年女性（OW；年龄范围50 - 72岁）进行了比较。只有OW组每周进行2天、为期12周的有监督的抗阻训练。基线期和训练后的测量包括心率变异性（HRV）和复杂性（样本熵），以评估自主神经调节功能。12周的抗阻训练包括9项练习，每组进行8 - 12次重复，共3组。在基线期，以BMI作为协变量，通过单因素方差分析评估最大力量和自主神经调节功能的组间差异。在OW组中，采用重复测量方差分析评估抗阻训练的效果，以便比较基线期和抗阻训练后的情况。YW组的舒张压显著（p≤0.05）较低，但收缩压无差异。与OW组相比，YW组的绝对自然对数高频（HF）功率和标准化HF功率也显著（p≤0.05）更高。此外，在抗阻训练前，OW组的标准化低频功率（LF）（以及LF/HF比值）水平与YW组相比显著（p≤0.05）更高。然而，样本熵未发现差异。抗阻训练后，OW组的卧推（28%）和腿伸展（33%）显著（p≤0.05）增加。抗阻训练对任何自主神经参数均无显著影响，这表明它可能不足以改变衰老的影响。
