Effect of a 1-year intervention comprising brief counselling sessions and low-dose physical activity recommendations in Japanese adults, and retention of the effect at 2 years: a randomized trial

Julien Tripette, Yuko Gando, Haruka Murakami, Ryoko Kawakami, Kumpei Tanisawa, Harumi Ohno, Kana Konishi, Michiya Tanimoto, Noriko Tanaka, Hiroshi Kawano, Kenta Yamamoto, Akie Morishita, Motoyuki Iemitsu, Kiyoshi Sanada, Nobuyuki Miyatake, Motohiko Miyachi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Background: In an effort to increase people’s adherence to active lifestyles, contemporary physical activity (PA) guidelines now include low-dose PA. Methods: PA was evaluated in 583 participants of the Nutritional and Physical Activity Intervention Study (NEXIS) cohort (30–65 years old); 349 inactive participants (MVPA, 2.7 ± 1.0 MET-h/day) were randomly assigned to the intervention or control groups, and 235 active participants participated in follow-up visits. The intervention aimed to increase MVPA and comprised five brief counseling sessions over 1 year. The 1-year target for the participant was increasing their step-count to 10,000 steps/d or +3000 steps/d, relative to the baseline score. The counseling sessions were designed to stimulate progressive changes in physical behaviors by recommendations promoting small and/or light-intensity bouts of PA. PA was measured at baseline, the end of the intervention, and 1 year after the intervention ended. Additionally, several nutrition, health, and fitness parameters were measured. Results: Participants in the intervention group significantly increased their step-count from 8415 ± 1924 at baseline to 9493 ± 2575 at the end of the 1-year period. During the same period, MVPA significantly increased by 0.9 MET-h. The daily time spent in ≥ 3, ≥ 4 and ≥ 5 MET activities increased by 11, 6, and 3 min, respectively. This increase in PA remained observable 1 year after intervention concluded. The active group maintained higher physical activity levels throughout the two years. The intervention group showed smaller energy intakes at the end of the 2-year period. Significant correlations were noted between the 1-year change in MVPA and the change in resting heart rate (r = − 0.22), and between the 2-year change in MVPA and the change in waist circumference (r = − 0.08) and peak oxygen consumption capacity (r = 0.23) in the intervention group only. Conclusions: A prolonged and progressive PA intervention promoting small bouts of light-to-moderate PA may be used in healthy, not-optimally-active people to increase PA beyond the strict period of the intervention. Further studies are necessary to understand whether low-dose PA messages can be effective in initiating a progressive increase toward larger amounts of PA. Trial registration: Clinical Trials.gov, NCT00926744, retrospectively registered.

Original languageEnglish
Article number133
JournalBMC Sports Science, Medicine and Rehabilitation
Volume13
Issue number1
DOIs
Publication statusPublished - 2021 Dec

Keywords

  • Accelerometer monitor
  • Cohort study
  • Counseling
  • Health promotion
  • Moderate-to-vigorous physical activity
  • Physical activity
  • Randomized control trial
  • Step-count

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

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