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Reference value on daily living walking parameters among Japanese adults.

ABSTRACT: AIM:Walking speed is closely related to numerous health outcomes. It has typically been measured in laboratory settings, where individuals can intentionally change their walking speed. It can be accurately measured in daily life using a smartphone global positioning system. We aimed to present a reference value on walking speed in daily life by sex and age. METHODS:The data were obtained using a walking monitoring service involving global positioning system technology. A secondary data analysis was carried out. Four daily living walking parameters - daily living walking speed, daily living walking cycle, daily living step length and daily living cadence - of 8429 Japanese persons were measured in their daily life using a smartphone application. RESULTS:The means (standard deviations) of daily living walking speed, daily living walking cycle, daily living step length and daily living cadence were 1.30?m/s (0.10?m/s), 1.02?s (0.06?s), 65.55?cm (5.38?cm) and 118.86?steps/min (6.76?steps/min), respectively. Notably, daily living walking speed in those aged >65?years was significantly slower than in those aged <65?years. CONCLUSIONS:The present reference values and age differences of daily living walking parameters can be used to compare daily living walking speed data measured by other devices, such as accelerometers. This could allow for a consensus on the definition of daily walking speed that can be utilized for assessing health outcomes among older individuals. Geriatr Gerontol Int 2020; 20: 664-669.

SUBMITTER: Obuchi SP

PROVIDER: S-EPMC7496516 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Reference value on daily living walking parameters among Japanese adults.

Obuchi Shuichi P SP Kawai Hisashi H Murakawa Kenji K

Geriatrics & gerontology international 20200506 7

<h4>Aim</h4>Walking speed is closely related to numerous health outcomes. It has typically been measured in laboratory settings, where individuals can intentionally change their walking speed. It can be accurately measured in daily life using a smartphone global positioning system. We aimed to present a reference value on walking speed in daily life by sex and age.<h4>Methods</h4>The data were obtained using a walking monitoring service involving global positioning system technology. A secondary ...[more]

PMID: 32378318

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Project description:BackgroundThe 6-minute walking distance (6MWD) is an excellent measure of both functional endurance and health. The primary aim of this study was to estimate temporal trends in 6MWD for older Japanese adults between 1998 and 2017; the secondary aim was to estimate concurrent trends in body size (i.e., height and mass) and self-reported participation in exercise/sport.MethodsAdults aged 65-79 years were included. Annual nationally representative 6MWD data (n = 103,505) for the entire period were obtained from the Japanese Ministry of Education, Culture, Sports, Science and Technology. Temporal trends in means (and relative frequencies) were estimated at the gender-age level by best-fitting sample-weighted linear/polynomial regression models, with national trends estimated by a post-stratified population-weighting procedure. Temporal trends in distributional variability were estimated as the ratio of coefficients of variation.ResultsBetween 1998 and 2017 there was a steady, moderate improvement in mean 6MWD (absolute = 45 m (95% confidence interval (95%CI): 43-47); percent = 8.0% (95%CI: 7.6%-8.4%); effect size = 0.51 (95%CI: 0.48-0.54)). Gender- and age-related temporal differences in means were negligible. Variability in 6MWD declined substantially (ratio of coefficients of variation = 0.89, 95%CI: 0.87-0.92), with declines larger for women compared to men, and for 75-79-year-olds compared to 65-74-year-olds. Correspondingly, there were moderate and negligible increases in mean height and mass, respectively, and negligible increases in the percentage who participated in exercise/sport at least 3 days per week and at least 30 min per session.ConclusionThere has been a steady, moderate improvement in mean 6MWD for older Japanese adults since 1998, which is suggestive of corresponding improvements in both functional endurance and health. The substantial decline in variability indicates that the temporal improvement in mean 6MWD was not uniform across the distribution. Trends in 6MWD are probably influenced by corresponding trends in body size and/or participation in exercise/sport.

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Reference value on daily living walking parameters among Japanese adults.

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Reference value on daily living walking parameters among Japanese adults.

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