研究等業績 - 原著論文 - 鄭 松伊
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Relationship between physical activity levels and depressive symptoms in community-dwelling older Japanese adults
Songee Jung, Sangyoon Lee, Sungchul Lee, Seongryu Bae, Masakazu Imaoka, Kazuhiro Harada, Hiroyuki Shimada
Geriatrics and Gerontology International ( WILEY ) 18 ( 3 ) 421 - 427 2018年03月
研究論文（学術雑誌）
© 2017 Japan Geriatrics Society Aim: The aim of the present study was to investigate the relationship between physical activity (PA) and depressive symptoms in community-dwelling older Japanese adults. Methods: A cross-sectional study design was used to obtain data from 3191 community-dwelling older Japanese adults aged 70–95 years. Depressive symptoms were assessed using self-reported scores on the Geriatric Depression Scale-15. PA was objectively measured using an accelerometer worn for a maximum of 40 days, and average daily durations of light-intensity PA (LPA), moderate-to-vigorous intensity PA (MVPA) and step count were calculated. PA was compared between participants with and without depressive symptoms by carrying out analysis of covariance and multivariable logistic regression analysis adjusted for all covariates by using propensity scores. Results: Depressive symptoms were present in 598 participants (19.6%). A comparison of propensity-score adjusted PA showed that step count (5059.6 ± 53.7 vs 5003.0 ± 112.1 count/day; P = 0.652) and moderate-to-vigorous intensity PA duration (23.0 ± 0.4 vs 23.8 ± 0.7 min/day; P = 0.358) were not significantly different between participants with and without depressive symptoms, respectively. However, participants without depressive symptoms had a significantly higher LPA duration than those with depressive symptoms (39.4 ± 0.3 vs 37.3 ± 0.7 min/day, respectively; P < 0.01). Conclusions: The present results suggest that individuals with lower LPA have a higher risk of depressive symptoms. These findings imply that PA recommendations, especially for older adults, should emphasize LPA, which appears to be especially effective at preventing depressive symptoms. Geriatr Gerontol Int 2018; 18: 421–427.
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Development of the Nutrition and Functionality Assessment (NFA) among Older Adults in Japan
Y. Okubo, M. Nemoto, Y. Osuka, S. Jung, S. Seino, R. Figueroa, G. Vinyes-Pares, E. A. Offord, M. Shevlyakova, D. Breuille, K. Tanaka
The Journal of frailty & aging 7 ( 3 ) 187 - 192 2018年01月
研究論文（学術雑誌）
OBJECTIVE: Develop and evaluate the feasibility and validity of the Nutrition and Functionality Assessment (NFA) which identifies "target" older adults who could benefit from a personalized program following evaluation of their nutrition status and physical functionality. DESIGN: Cross-sectional study. SETTING: Community and geriatric day-care centers and university in Japan. PARTICIPANTS: 267 older adults aged 65-90. MEASUREMENTS: The "target" individuals were screened based on gait speed (0.6-1.5 m/s). Nutrition (Mini Nutrition Assessment-short form and protein intake), strength (30s chair sit-to-stand and hand-grip strength) and endurance (6-minute walk) were assessed. Physical activity was monitored using a tri-axil accelerometer for a week. Fried frailty phenotype was also assessed. RESULTS: Out of 267 individuals, 185 (69%) had gait speed between 0.6-1.5 m/s, corresponding to our "target" group from which, 184 (95%) completed the nutrition and physical functionality assessments with the physical activity monitoring. The NFA was completed in approximately 30 minutes. No adverse events directly due to the NFA were reported. NFA physical functionality and global scores were significantly related to frailty phenotype but nutrition score was not related to frailty phenotype. CONCLUSION: The study demonstrated that the NFA is a safe and feasible tool to screen target older adults and simultaneously evaluate their nutritional status and physical functionality. Validity of the NFA was partially confirmed by the significant association of the global and physical functionality scores with frailty phenotype. More studies are required to validate and maximize the applicability of the NFA in communities and institutions in Japan and elsewhere.
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Does attending an exercise class with a spouse improve long-term exercise adherence among people aged 65 years and older: A 6-month prospective follow-up study
Yosuke Osuka, Songee Jung, Taeho Kim, Yoshiro Okubo, Eunbi Kim, Kiyoji Tanaka
BMC Geriatrics ( BMC ) 17 ( 1 ) 170 - 170 2017年07月
研究論文（学術雑誌）
© 2017 The Author(s). Background: Family support can help older adults better adhere to exercise routine, but it remains unclear whether an exercise program targeting older married couples would have stronger effects on exercise adherence than would a program for individuals. The purpose of this study was to determine the effects of an exercise program on the exercise adherence of older married couples over a 24-week follow-up period. Methods: Thirty-four older married couples and 59 older adults participated in this study as couple and non-couple groups (CG and NCG, respectively). All participants attended an 8-week supervised program (once a week and a home-based exercise program comprising walking and strength exercises) and then participated in a follow-up measurement (24 weeks after post-intervention measurement). Exercise adherence was prospectively measured via an exercise habituation diary during the follow-up period - specifically, we asked them to record practice rates for walking (≥2 days/week) and strength exercises (≥6 items for 2 days/week). A multivariate logistic regression analysis was conducted to obtain the CG's odds ratios (ORs) and 95% confidence intervals (CIs) for adherence to walking and strength exercise adjusted for potential confounders (with NCG as the reference). Results: Although the adherence rate of walking exercise in the CG was significantly higher than that in the NCG (29.2%; P < 0.001), there was no significant difference in the adherence rate of strength exercise between the two groups (P = 0.199). The multivariate logistic regression analysis showed that CG had significantly higher odds of adherence to walking exercise compared with the NCG (3.68 [1.57-8.60]). However, the odds of adherence to strength exercise did not significantly differ between the two groups (1.30 [0.52-3.26]). Conclusions: These results suggest that an exercise program targeting older married couples may be a useful strategy for maintaining walking adherence, even six months after the supervised program has ceased. A blinded randomized controlled trial will be needed to confirm this conclusion. Trial registration: Retrospectively registered. UMIN Clinical Trials Registry (Registered: 02/11/16) UMIN000024689.