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. 2015 Mar 1;118(5):595-603.
doi: 10.1152/japplphysiol.00819.2014. Epub 2014 Dec 24.

The factors affecting adherence to a long-term interval walking training program in middle-aged and older people

Shizue Masuki  1 , Masayuki Mori  2 , Yasuharu Tabara  3 , Akihiro Sakurai  4 , Shigenari Hashimoto  5 , Mayuko Morikawa  6 , Ken Miyagawa  6 , Eri Sumiyoshi  7 , Tetsuro Miki  8 , Keiichi Higuchi  2 , Hiroshi Nose; Shinshu University Genetic Research Consortium
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Free article

The factors affecting adherence to a long-term interval walking training program in middle-aged and older people

Shizue Masuki et al. J Appl Physiol (1985). .
Free article

Abstract

No long-term exercise training regimen with high adherence and effectiveness in middle-aged and older people is broadly available in the field. We assessed the adherence to, and effects of, our long-term training program comprising an interval walking training (IWT) and an information technology network system and the factors affecting adherence. Middle-aged and older men and women [n = 696, aged 65 ± 7(SD) yr] underwent IWT. The subjects were instructed to repeat five or more sets of fast and slow walking for 3 min each at ≥70 and 40% peak aerobic capacity for walking (V̇O2peak), respectively, per day ≥4 days/wk for 22 mo. Adherence was assessed as training days accomplished relative to the target of 4 days/wk over 22 mo. The effects on the V̇O2peak and lifestyle-related disease score were evaluated every 6 mo. The independent factors affecting adherence were assessed by multiple-regression analysis after adjustment for baseline physical characteristics and other possible covariates, including vasopressin V1a receptor polymorphisms. The adherence over 22 mo averaged 70% and was highly correlated with a 13% reduction in the lifestyle-related disease score (R(2) = 0.94, P = 0.006) and with a 12% increase in V̇O2peak (R(2) = 0.94, P = 0.006). The major determinant of higher adherence was lower baseline body mass index (BMI) (P < 0.0001) and male sex (P < 0.0001). For men, in addition to BMI, nonsmokers (P = 0.031) and V1a receptor polymorphisms (P = 0.033) were independent determinants of higher adherence. Thus the long-term IWT program is an effective regimen. Moreover, baseline BMI and sex for all subjects, and smoking and V1a receptor polymorphisms for men, were associated with adherence.

Keywords: aging; exercise training; genetics; remotely supervised system; vasopressin.

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