Daily step count and all-cause mortality in a sample of Japanese elderly people: a cohort study

Autor: Naofumi Yamamoto, Hideo Miyazaki, Mieko Shimada, Naoki Nakagawa, Susumu S. Sawada, Mamoru Nishimuta, Yasuo Kimura, Ryoko Kawakami, Hiroshi Nagayama, Hidenori Asai, I-Min Lee, Steven N. Blair, Yutaka Yoshitake
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: BMC Public Health, Vol 18, Iss 1, Pp 1-8 (2018)
Druh dokumentu: article
ISSN: 1471-2458
DOI: 10.1186/s12889-018-5434-5
Popis: Abstract Background This study aimed to examine the relationship between pedometer-assessed daily step count and all-cause mortality in a sample of elderly Japanese people. Methods Participants included 419 (228 males and 191 females) physically independent, community-dwelling 71-year-old Japanese people. The number of steps per day was measured by a waist-mounted pedometer for seven consecutive days at baseline. Participants were divided into quartiles based on their average number of steps/day (first quartile, 7972 steps/day) and were followed up over a mean period of 9.8 years (1999–2010) for mortality. Results Seventy-six participants (18.1%) died during the follow-up period. The hazard ratios (adjusted for sex, body mass index, cigarette smoking, alcohol intake, and medication use) for mortality across the quartiles of daily step count (lowest to highest) were 1.00 (reference), 0.81 (95%CI, 0.43–1.54), 1.26 (95%CI, 0.70–2.26), and 0.46 (95%CI, 0.22–0.96) (P for trend = 0.149). Participants in the highest quartile had a significantly lower risk of death compared with participants in the lowest quartile. Conclusion This study suggested that a high daily step count is associated with a lower risk of all-cause mortality in physically independent Japanese elderly people.
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