Postural Responses to Various Frequencies of Vibration of the Triceps Surae and Forefoot Sole during Quiet Standing

Naka, Masami; Fujiwara, Katsuo; Kiyota, Naoe

doi:10.1068/p7738

Cited by 11 publications

(6 citation statements)

References 30 publications

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“…The data demonstrated that vibration frequencies used in our experiments were well above threshold in HY persons. This corresponds to reports that 20–30 Hz vibrations of tendons of tibialis anterior muscle could elicit postural responses in healthy young adults [ 31 , 66 ]. Our study show that HE persons, who were similar to HY persons in regard to their baseline balance parameters during quiet standing, actually were less responsive to proprioceptive vibratory stimulation than HY persons.…”

Section: Discussionsupporting

confidence: 90%

“…Noteworthy, motor responses to near-threshold vibratory stimulation may not be consistent and vary between persons [ 29 , 30 ]. It was reported, for example, that vibration of the muscle triceps surae with frequencies below 20 Hz produced body sway in the direction opposite to sway elicited by high frequency vibration in 20% of young healthy adults participated in experiments [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

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Low intensity vibration of ankle muscles improves balance in elderly persons at high risk of falling

2018

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In our study we examined postural performance of young healthy persons (HY), elderly healthy persons (HE), and elderly persons at high risk of falling (FR). Anterio-posterior (AP) and medio-lateral (ML) ankle and hip angular deviations, as well as linear displacements of the center of mass (COM) were assessed in persons standing with eyes either open or closed, while none, and 40 and 30 Hz vibrations were applied bilaterally to the ankle muscle gastrocnemius. During quiet standing with eyes open, balance parameters in FR group differed from those in healthy groups. ML ankle and hip angular deviations, as well as COM linear displacements were noticeably larger in FR group. During quiet standing with eyes closed, all balance parameters in participants of all groups had a clear trend to increase. During standing with eyes open, 40 Hz vibration increased all but one balance parameter within HY group, ankle angular deviations in HE group, but none in FR group. In response to 30 Hz vibration, only ankle angular deviations and COM linear displacements increased in HY group. There were no changes in both elderly groups. During standing with eyes closed, 40 and 30 Hz vibrations did not produce consistent changes in balance parameters in HY and HE groups. In FR persons, 40 Hz vibration did not change balance parameters. However, in FR groups, 30 Hz vibration decreased ankle and hip angular deviations, and COM linear displacements. The major result of the study is a finding that low intensity vibration of ankle muscles makes balance better in elderly persons at high risk of falling. This result is clinically relevant because it suggests that applying mild vibration to ankle muscles while standing and walking might benefit elderly persons, improving their postural performance and reducing a risk of unexpected falls.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Low intensity vibration of ankle muscles improves balance in elderly persons at high risk of falling

2018

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“…As a result, greater reproducibility was observed under the heel and 3rd MTH than at other sites. Furthermore, this finding supports previous research suggesting that sensory input from the heel and middle MTH plays a vital role in the perception of anteroposterior translation of the center of foot pressure during standing and gait [ 1 , 3 , 29 ]. Therefore, as representative test sites for plantar sensory function, the heel area and the middle of the MTH were suggested to provide more reliable results and functional significance.…”

Section: Discussionsupporting

confidence: 90%

Validity and Reliability of Criteria for Plantar Sensation Assessment Using Semmes–Weinstein Monofilament as a Clinically Usable Index

Nakamoto

Ideguchi

Iwata

et al. 2022

IJERPH

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There is no standard clinically adaptable criterion for assessing plantar sensation for pre- and post-intervention comparisons. Studies using Semmes–Weinstein monofilaments (SWMs) to investigate intervention effects on plantar sensation vary in procedure and do not consider measurement errors. This study aimed to develop a simple criterion using SWMs to assess plantar sensation, determine the measurement error range, and identify areas of low error. Six examiners assessed 87 healthy young adults in Experiment 1, while two examiners assessed 10 participants in Experiment 2. Filaments were graded from 1 to 20 based on increasing diameter. The smallest grade that could be perceived for three sequential stimuli was used as the criterion (smallest perceivable grade, SPG). The SPG was significantly smaller at the hallux and larger at the heel than at other sites. There were no significant differences between the SPG of the repeated tests performed by the same versus different examiners. The interquartile range of the differences was < ±3 at all sites. Thus, our criteria were reliable in evaluating the effects of plantar sensation interventions, especially at the heel and the middle of the metatarsal heads and could contribute to the development of more effective treatments for plantar sensations.

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“…Maximum effect of lateral gastrocnemius and tibialis anterior muscle vibration on postural balance has reported for high frequencies of 80–100 Hz among healthy individuals, which cause an increase in body sway [ 9 ]. On the other hand, vibration of plantar sole and triceps surae with very low frequencies of below 20 Hz reduces the body sway among healthy participants [ 10 ]. No study has investigated the effect of gastrocnemius muscle vibration on balance behaviors within frequencies near and slightly above the threshold for eliciting the postural balance.…”

Section: Introductionmentioning

confidence: 99%

Proprioceptive impairments in high fall risk older adults: the effect of mechanical calf vibration on postural balance

et al. 2018

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BackgroundImpairments in proprioceptive mechanism with aging has been observed and associated with fall risk. The purpose of the current study was to assess proprioceptive deficits among high fall risk individuals in comparison with healthy participants, when postural performance was disturbed using low-frequency mechanical gastrocnemius vibratory stimulation.MethodsThree groups of participants were recruited: healthy young (n = 10; age = 23 ± 2 years), healthy elders (n = 10; age = 73 ± 3 years), and high fall risk elders (n = 10; age = 84 ± 9 years). Eyes-open and eyes-closed upright standing balance performance was measured with no vibration, and 30 and 40 Hz vibration of both calves. Vibration-induced changes in balance behaviors, compared to baseline (no vibratory stimulation) were compared between three groups using multivariable repeated measures analysis of variance models.ResultsOverall, similar results were observed for two vibration frequencies. However, changes in body sway due to vibration were more obvious within the eyes-closed condition, and in the medial–lateral direction. Within the eyes-closed condition high fall risk participants showed 83% less vibration-induced change in medial–lateral body sway, and 58% less sway velocity, when compared to healthy participants (p < 0.001; effect size = 0.45–0.64).ConclusionsThe observed differences in vibration effects on balance performance may be explained by reduced sensitivity in peripheral nervous system among older adults with impaired balance.

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Postural Responses to Various Frequencies of Vibration of the Triceps Surae and Forefoot Sole during Quiet Standing

Cited by 11 publications

References 30 publications

Low intensity vibration of ankle muscles improves balance in elderly persons at high risk of falling

Low intensity vibration of ankle muscles improves balance in elderly persons at high risk of falling

Validity and Reliability of Criteria for Plantar Sensation Assessment Using Semmes–Weinstein Monofilament as a Clinically Usable Index

Proprioceptive impairments in high fall risk older adults: the effect of mechanical calf vibration on postural balance

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