The effect of inter-electrode distance on radial muscle displacement and contraction time of the biceps femoris, gastrocnemius medialis and biceps brachii, using tensiomyography in healthy participants
2019
Online
Elektronische Ressource
BACKGROUND: The systematic effect of inter-electrode distance on electrically elicited radial muscle displacement (Dm) and contraction time (T c) of the biceps femoris, gastrocnemius medialis and biceps brachii using tensiomyography (TMG) is currently unavailable. OBJECTIVE: To investigate the effects of inter-electrode distance (4 cm, 5 cm, 6 cm and 7 cm) on Dm and T c of the biceps femoris, gastrocnemius medialis and biceps brachii, when the current amplitude is standardised. APPROACH: A within subject, repeated measures cross-over study. PARTICIPANTS: 24 participants. MAIN RESULTS: Biceps femoris and gastrocnemius medialis Dm increased with increased inter-electrode distance (biceps femoris: p = 0.015; gastrocnemius medialis: p = 0.000), yet T c were not affected (p > 0.05). Biceps brachii Dm was not affected by inter-electrode distance (p > 0.05), yet T c became shorter with increased inter-electrode distance (p = 0.032). SIGNIFICANCE: Inter-electrode distance affects Dm but not T c in two pennate muscles (biceps femoris and gastrocnemius medialis), and T c but not Dm in one parallel muscle (biceps brachii). Based on Dm measurements, optimal muscle specific inter-electrode distances were judged within the limits of this study. The following optimal inter-electrode distances are suggested: biceps femoris = 6 cm, gastrocnemius medialis = 7 cm and biceps brachii = 4 cm. Our findings emphasise the importance of accurate implementation and reporting of inter-electrode distance, for the reproducibility and comparability of studies using TMG.
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The effect of inter-electrode distance on radial muscle displacement and contraction time of the biceps femoris, gastrocnemius medialis and biceps brachii, using tensiomyography in healthy participants
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Veröffentlichung: | 2019 |
Medientyp: | Elektronische Ressource |
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