Effect of high‐intensity interval walking on microvascular endothelial function among community‐dwelling older people. Issue 2 (6th January 2023)

• Record Type: Journal Article
• Authors: Kamiya, Kuniyasu; Hayashi, Emi; Ito, Yuri; Kudo, Asako; Kakihana, Hironobu; Tsuda, Kouji; Saito, Masahisa; Nukui, Yuji; Nakayama, Shin; Ueno, Takaaki; Hoshiga, Masaaki; Tamaki, Junko
• Is Part Of: Geriatrics and gerontology international. Volume 23:Issue 2(2023)
• Page Start: 103
• Page End: 110
• Publication Date: 2023-01-06
• Subjects: atherosclerosis -- high‐intensity interval training -- nonrandomized controlled trial -- sex differences -- vascular endothelium; Geriatrics -- Periodicals; Gerontology -- Periodicals; Geriatrics -- Japan -- Periodicals; Gerontology -- Japan -- Periodicals; 618.97
• DOI: 10.1111/ggi.14530
• Languages: English
• ISSNs: 1444-1586

Abstract

Abstract : Aim: To investigate the effects of high‐intensity interval exercise training on microvascular endothelial function among community‐dwelling older people. Methods: We analyzed the data from a nonrandomized controlled trial. This study's participants were 48 men (aged 75 ± 5 years; exercise training group, n = 24; control group, n = 24) and 83 women (aged 75 ± 4 years; exercise training group, n = 36; control group, n = 47). The exercise training group underwent a high‐intensity interval walking training for 5 months. Results: In the exercise group, 100% and 91.7% of men and women, respectively, achieved brisk walking times ≥50 min/week. The change in the reactive hyperemia index significantly differed between the groups of men, whereas that in the control group was not significant; however, a significant increase was observed in the exercise training group. Among women, changes in the reactive hyperemia index were not significant in either group; however, for women in the exercise training group, these changes negatively and positively correlated with the change in body mass index (Spearman's rho = −0.342; P = 0.041) and baseline body mass index (rho = 0.362, P = 0.030), respectively. Additionally, the distribution of body mass index was broader in women than in men. Conclusions: Interval walking training increased the reactive hyperemia index in men rather than in women. A higher variation in baseline body mass index may be associated with no statistical increase in reactive hyperemia index in women. Geriatr Gerontol Int 2023; 23: 103–110 .