• Eiko Takano, Toshio Teranishi, Toyoaki Watanabe, Kensuke Ohno, Shiko Kitaji, Shunji Sawa, Yoshikiyo Kanada, Kenji Toba, and Izumi Kondo.
• Center of Assistive Robotics and Rehabilitation for Longevity and Good Health, National Center for Geriatrics and Gerontology, Obu, Aichi, Japan.
• Geriatr Gerontol Int. 2017 Sep 1; 17 (9): 1265-1269.

AimWe aimed to clarify whether there are differences in the effect of exercise interventions between prefrail older adults and older adults without frailty.MethodsThe participants were community-dwelling older adults (mean age 75.1 ± 5.1 years). The participants were instructed to use a training method at home to prevent frailty. The effects of the intervention were evaluated at 4 months. Outcome measures were the Timed Up and Go test, grip strength, one leg balance, knee extension strength and the fall risk index. The present study used the criteria for frailty status of the National Center for Geriatrics and Gerontology in Japan. The studied sample included prefrail participants (n = 17) and robust participants (n = 24). We compared the value of outcome measures before and after the intervention in each group using two-way repeated measures analysis of variance.ResultsThere were significant differences for the group effect for one leg balance (P < 0.01), and there were significant differences for the time effect for Timed Up and Go, one leg balance and knee extension strength (P < 0.01). In these outcomes, there were no significant interactions between frailty status and intervention. Four prefrail participants (mean age 78.0 ± 3.8 years) returned to the robust status after the intervention. No participants became frail.ConclusionsThese results suggest that we can expect similar interventional effects for prefrail older adults and robust older adults. It is important that a frail status be prevented in prefrail older adults by using an exercise intervention. Further studies are required to determine the different effects of exercise intervention on prefrail status compared with frailty status in community-dwelling older adults. Geriatr Gerontol Int 2017; 17: 1265-1269.© 2016 Japan Geriatrics Society.

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