TY  - JOUR
PY  - 2021//
TI  - Why do they fall? The impact of insomnia on gait of older adults: a case-control study
JO  - Nature and science of sleep
A1  - Kirshner, Dani
A1  - Kizony, Rachel
A1  - Gil, Efrat
A1  - Asraf, Kfir
A1  - Krasovsky, Tal
A1  - Haimov, Iris
A1  - Shochat, Tamar
A1  - Agmon, Maayan
SP  - 329
EP  - 338
VL  - 13
IS  - 
N2  - STUDY OBJECTIVES: To compare gait and cognitive performance conducted separately as a single- (ST) and simultaneously as a dual-task (DT), ie, when a cognitive task was added, among community-dwelling older adults with and without insomnia. <br><br>METHODS: Participants included: 39 (28 females) community-dwelling older adults with insomnia, 34 (21 females) controls without insomnia. Subject groups were matched for age, gender, and education. Sleep quality was evaluated based on two-week actigraphy. Gait speed and cognition were assessed as ST and DT performance. DT costs (DTCs) were calculated for both tasks. Outcomes were compared via independent samples t-tests or Mann-Whitney U-tests. <br><br>RESULTS: Older adults with insomnia demonstrated significantly slower gait speed during ST (1 ± 0.29 vs 1.27 ± 0.17 m/s, p<0.001) and DT (0.77 ± 0.26 vs 1.14 ± 0.20 m/s, p<0.001) and fewer correct responses in the cognitive task during ST (21 ± 7 vs 27 ± 11, p=0.009) and DT (19 ± 7 vs 23 ± 9, p=0.015) compared to control group. DTC for the gait task was higher among older adults with insomnia (18.32%, IQR: 9.48-30.93 vs 7.81% IQR: 4.43-14.82, p<0.001). However, no significant difference was observed in DTC for the cognitive task (14.71%, IQR: -0.89-38.84 vs 15%, IQR: -0.89-38.84%, p=0.599). <br><br>CONCLUSION: Older adults with insomnia have lower gait speed and poorer cognitive performance during ST and DT and an inefficient pattern of task prioritization during walking, compared to counterparts without insomnia. These findings may explain the higher risk of falls among older adults with insomnia. Geriatric professionals should be aware of potential interrelationships between sleep and gait.<p />  <p>Language: en</p>
LA  - en
SN  - 1179-1608
UR  - http://dx.doi.org/10.2147/NSS.S299833
ID  - ref1
ER  -