Takayuki Nishimura1, Kazuhiko Arima1, Takuhiro Okabe1,2, Satoshi Mizukami2, Yoshihito Tomita1,2, Mitsuo Kanagae2, Hisashi Goto3, Itsuko Horiguchi4, Yasuyo Abe1, Kiyoshi Aoyagi1
1Department of Public Health, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
2Department of Rehabilitation, Nishi-Isahaya Hospital, Isahaya, Japan
3Goto Health Care Office, Nagasaki, Japan
4Center for Public Relations Strategy, Nagasaki University, Nagasaki, Japan
Tóm tắt
AimDetermining gait speed as a measure of physical performance is recommended in diagnosing sarcopenia. Gait speed measurements require a certain amount of space (e.g. a 6‐m course), and might not be feasible in clinical settings or heath checkup examination sites. We developed a formula to estimate chair stand time based on gait speed, and examined the validity (sensitivity and specificity) of using the estimated chair stand time cut‐off point as a surrogate for the recommended gait speed cut‐off point.MethodsChair stand time was defined as the time it took to stand up from a standard chair five times. Gait speed was calculated from the time required for participants to walk a 6‐m course at their usual pace.ResultsSimple regression analysis showed a significant negative relationship between chair stand time and gait speed (P < 0.0001), and the estimated formula was derived as follows: five times chair stand time = −8.41 × gait speed + 20.0 (R2 = 0.34). Therefore, the chair stand time cut‐off point was estimated to be 13.3 s by inserting the recommended gait speed cut‐off of 0.8 m/s in the above formula. Rounding off to make its use simpler, the estimated chair stand time cut‐off was 13 s. The sensitivity and specificity of the estimated chair stand time cut off were 0.75 and 0.94, respectively.ConclusionsChair stand time might be useful as a surrogate of gait speed when screening for sarcopenia. Geriatr Gerontol Int 2017; 17: 659–661.
