title: Acute exercise increases systemic arterial compliance after 6-month exercise training in older women.
abstract: High physical activity or aerobic exercise training increases central arterial distensibility in older humans. However, the effect of a single bout of exercise on central arterial distensibility in older humans is unknown. Furthermore, the effect of exercise training on central arterial distensibility during exercise is unclear. We investigated whether systemic arterial compliance (SAC) changes after acute exercise in older humans, and, if so, whether this change in SAC is enhanced by aerobic exercise training. Seven untrained older women (61-69 years old) participated in a 6-month exercise intervention study. We measured SAC after acute exercise (cycling exercise at 80% of their individual ventilatory threshold for 30 min) before and after 6 months of aerobic exercise training. After exercise training, the individual ventilatory threshold was significantly increased. In addition, both the SAC at rest and that 30 min after acute exercise were significantly increased after the exercise training program. Before exercise training, there was no significant increase in SAC after acute exercise, whereas, after exercise training, the SAC was significantly increased 30 min after acute exercise. The present study suggests that, after aerobic exercise training, SAC increases after acute exercise in older humans, and that the SAC at rest and after acute exercise is enhanced by aerobic exercise training, thereby causing an effective adaptation in increase in cardiac output during exercise.
authors: Institute of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan. smaeda@tara.tsukuba.ac.jp
authors: Seiji
authors: S
authors: Maeda
authors: Takumi
authors: T
authors: Tanabe
authors: Takeshi
authors: T
authors: Otsuki
authors: Jun
authors: J
authors: Sugawara
authors: Ryuichi
authors: R
authors: Ajisaka
authors: Mitsuo
authors: M
authors: Matsuda
mesh_terms: D000368:Aged; D001158:Arteries / Q000187:drug effects* / Q000502:physiology; D003187:Compliance; D015444:Exercise; D005260:Female; D006801:Humans; D008875:Middle Aged; D052250:Nitric Oxide Synthase Type III / Q000096:biosynthesis
chemical_list: D052250:Nitric Oxide Synthase Type III