1. Compensatory latency time delays during consecutive perturbations in older adults with and without kinesiophobia.
- Author
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Sung, Paul and Park, Moon Soo
- Subjects
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PREVENTION of falls in old age , *PERTURBATION theory , *BODY mass index , *POSTURAL balance , *HUMAN kinematics - Abstract
Fear of movement has been related to lower limb activation patterns in older adults. However, insight into consecutive perturbations on stepping strategy while considering fall-related confidence is unknown. Are there latency time delays following three consecutive slip perturbations between subjects with and without kinesiophobia when considering limb dominance and fall efficacy differences? There were 15 older adults with kinesiophobia and 15 age- and body mass index (BMI)-matched control subjects. The subjects stood on the platform during three consecutive perturbations (250, 300, and 400 msec excursions), which were produced by a Bertec device. The subjects completed questionnaires to evaluate the psychological features of their fall-related fear (Tampa Scale for Kinesiophobia: TSK) as well as the modified fall efficacy scale (FES). The latency times (msec) measured the time it took for a subject to respond to a translation. Overall, the results of the FES demonstrated a moderate negative association with the TSK (r = −0.52, p = 0.004). There was a significant group difference for the FES (t = 2.78, p = 0.01). The FES demonstrated significant positive correlation coefficients (ranging from 0.40 to 0.51) and significant negative correlation coefficients (ranging from −0.41 to −0.61), except for the slow perturbations. The groups demonstrated a significant interaction on consecutive latency times and limb side (F = 5.84, p = 0.02). The latency time during the fast perturbations on the dominant limb (F = 5.53, p = 0.02) was significantly shorter in the kinesiophobia group. The control group demonstrated confidence during fall-related activities, but the latency times were significantly different between groups when considering the dominant limb following repeated slip perturbations. The kinesiophobia group demonstrated shorter latency times on the dominant limb to protect against potential fall-risks from perturbations. The group interactions on limb side and consecutive perturbations need to be considered with fall-related confidence and improved standing balance in older adults with kinesiophobia. • Fear of movement on limb activation patterns was compared in older adults. • The group interactions on limb side and perturbations were evident for fall risks. • The kinesiophobia group demonstrated shorter dominant limb reactions. • The control group demonstrated confidence during fall-related perturbations. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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