2020
DOI: 10.1186/s12877-020-01650-4
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The kinematics and strategies of recovery steps during lateral losses of balance in standing at different perturbation magnitudes in older adults with varying history of falls

Abstract: Background Step-recovery responses are critical in preventing falls when balance is lost unexpectedly. We investigated the kinematics and strategies of balance recovery in older adults with a varying history of falls. Methods In a laboratory study, 51 non-fallers (NFs), 20 one-time fallers (OFs), and 12 recurrent-fallers (RFs) were exposed to random right/left unannounced underfoot perturbations in standing of increasing magnitude. The stepping strategies and kinematics… Show more

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Cited by 21 publications
(31 citation statements)
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References 36 publications
(34 reference statements)
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“…The best observational and kinematic measures to represent the reactive (compensatory) balance responses are: the single-step and multiple-step thresholds (observational parameters), and the first-step recovery initiation duration, first step duration, total balance recovery duration, and total CoM displacement (kinematic parameters) ( 14 ). All of these parameters have been previously found to be able to distinguish between younger and older adults ( 14 ) and fallers and non-fallers ( 15 ). The single-step threshold was previously shown to be an independent predictor of a future fall ( 16 21 ) and to reflect unsteadiness in reactive balance control among older adults with varying histories of falls ( 15 ).…”
Section: Methods and Analysismentioning
confidence: 99%
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“…The best observational and kinematic measures to represent the reactive (compensatory) balance responses are: the single-step and multiple-step thresholds (observational parameters), and the first-step recovery initiation duration, first step duration, total balance recovery duration, and total CoM displacement (kinematic parameters) ( 14 ). All of these parameters have been previously found to be able to distinguish between younger and older adults ( 14 ) and fallers and non-fallers ( 15 ). The single-step threshold was previously shown to be an independent predictor of a future fall ( 16 21 ) and to reflect unsteadiness in reactive balance control among older adults with varying histories of falls ( 15 ).…”
Section: Methods and Analysismentioning
confidence: 99%
“…All of these parameters have been previously found to be able to distinguish between younger and older adults ( 14 ) and fallers and non-fallers ( 15 ). The single-step threshold was previously shown to be an independent predictor of a future fall ( 16 21 ) and to reflect unsteadiness in reactive balance control among older adults with varying histories of falls ( 15 ). Moreover, excellent inter-observer reliability has been reported for single-step and multiple-step thresholds (ICC 2, 1 = 0.978 and ICC 2, 1 = 0.971, respectively; p < 0.001), and for first-step recovery initiation duration, first step duration, total balance recovery duration, and total CoM displacement (ICC 2, 1 =0.917, ICC 2, 1 =0.975, ICC 2, 1 =0.950, and ICC 2, 1 =0.918, respectively; p < 0.001) ( 14 ).…”
Section: Methods and Analysismentioning
confidence: 99%
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