Watsford Mark, Murphy Arona
School of Leisure, Sport and Tourism, University of Technology, Sydney, Lindfield, New South Wales, Australia.
J Aging Phys Act. 2008 Jul;16(3):245-60. doi: 10.1123/japa.16.3.245.
This research examined the effects of respiratory-muscle (RM) training on RM function and exercise performance in older women. Twenty-six women (60-69 yr of age) were assessed for spirometry, RM strength (maximal inspiratory and expiratory pressure), inspiratory-muscle endurance, and walking performance to a perceived exertion rating of "hard." They were randomly allocated to a threshold RM training group (RMT) or a nonexercising control group (CON) for 8 wk.After training, the 22% (inspiratory) and 30% (expiratory) improvements in RM strength in the RMT group were significantly higher than in the CON group (p < .05). The RMT group also displayed several significant performance improvements, including improved within-group treadmill performance time (12%) and reductions in submaximal heart rate (5%), percentage of maximum voluntary ventilation (16%), and perceived exertion for breathing (8%). RM training appears to improve RM function in older women. Furthermore, these improvements appear to be related to improved submaximal exercise performance.
本研究考察了呼吸肌（RM）训练对老年女性RM功能和运动表现的影响。对26名年龄在60 - 69岁的女性进行了肺活量测定、RM力量（最大吸气和呼气压力）、吸气肌耐力以及步行至自觉用力程度为“费力”时的运动表现评估。她们被随机分为阈值RM训练组（RMT）或非运动对照组（CON），为期8周。训练后，RMT组RM力量吸气提高22%、呼气提高30%，显著高于CON组（p < .05）。RMT组还表现出多项显著的运动表现改善，包括组内跑步机运动时间改善（12%）、次最大心率降低（5%）、最大自主通气百分比降低（16%）以及呼吸自觉用力程度降低（8%）。RM训练似乎可改善老年女性的RM功能。此外，这些改善似乎与次最大运动表现的改善有关。
