背景:这项研究检查了适用于老年人的调节和控制的超高强度间歇训练(HIT)的效果,与中等强度训练(MIT)相比,关于心肺健康;认知,心血管,和肌肉功能;和生活质量。
方法:68名不锻炼的老年人(66-79岁,44%的男性)在普通健身房中的固定自行车上被随机分配到3个月的每周两次HIT(20分钟的会议,包括10×6秒的间隔)或MIT(40分钟的会议,包括3×8分钟的间隔)。通过标准化的踩踏节奏和阻力负荷的单独调整来控制个性化的目标强度。主要结果是心肺适应性(Vo2peak)和整体认知功能(单位加权综合)。
结果:V²o2peak显著增加(平均1.38mL/kg/min,95%CI[0.77,1.98]),组间无差异(平均差0.05[-1.17,1.25])。全球认知没有改善(0.02[-0.05,0.09]),组间也没有差异(0.11[-0.03,0.24])。观察到工作记忆变化的显著组间差异(0.32[0.01,0.64]),和最大等距膝关节伸肌力量(0.07N·m/kg[0.003,0.137]),两者都赞成命中。无论小组如何,情景记忆出现了负面变化(-0.15[-0.28,-0.02]),视觉空间能力的积极变化(0.26[0.08,0.44]),收缩压(-2.09mmHg[-3.54,-0.64])和舒张压(-1.27mmHg[-2.31,-0.25])降低。
结论:在不锻炼的老年人中,3个月的瓦特控制的超最大HIT改善了心肺健康和心血管功能,与MIT相似。尽管有一半的训练时间。赞成命中,肌肉功能改善,对工作记忆有潜在的领域特异性影响.
背景:NCT03765385。
This
study examined the effects of regulated and controlled supramaximal high-intensity interval training (HIT) adapted for older adults, compared to moderate-intensity training (MIT), on cardiorespiratory fitness; cognitive, cardiovascular, and muscular function; and quality of life.
Sixty-eight nonexercising older adults (66-79 years, 44% males) were randomized to 3 months of twice-weekly HIT (20-minute session including 10 × 6-second intervals) or MIT (40-minute session including 3 × 8-minute intervals) on stationary bicycles in an ordinary gym setting. Individualized target intensity was watt controlled with a standardized pedaling cadence and individual adjustment of the resistance load. Primary outcomes were cardiorespiratory fitness (V̇o2peak) and global cognitive function (unit-weighted composite).
V̇o2peak increased significantly (mean 1.38 mL/kg/min, 95% CI [0.77, 1.98]), with no between-group difference (mean difference 0.05 [-1.17, 1.25]). Global cognition did not improve (0.02 [-0.05, 0.09]), nor differed between groups (0.11 [-0.03, 0.24]). Significant between-group differences in change were observed for working memory (0.32 [0.01, 0.64]), and maximal isometric knee extensor muscle strength (0.07 N·m/kg [0.003, 0.137]), both in favor of HIT. Irrespective of the group, there was a negative change in episodic memory (-0.15 [-0.28, -0.02]), a positive change in visuospatial ability (0.26 [0.08, 0.44]), and a decrease in systolic (-2.09 mmHg [-3.54, -0.64]) and diastolic (-1.27 mmHg [-2.31, -0.25]) blood pressure.
In nonexercising older adults, 3 months of watt-controlled supramaximal HIT improved cardiorespiratory fitness and cardiovascular function to a similar extent as MIT, despite half the training time. In favor of HIT, there was an improvement in muscular function and a potential domain-specific effect on working memory.
NCT03765385.