Effects of Fatigue on Inter-joint Coordination in Ballet Dancers During a Ballet Jumping Movement (petit échappé sauté)

Chai Wei Lin, Jeng Feng Yang, Yi An Chen, Cheng Feng Lin

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To examine the effects of fatigue on inter-joint coordination during repeated ballet jumping (petit échappé sauté). Methods: Twenty female ballet dancers performed petit échappé sauté movements up to and beyond the point of fatigue. The petit échappé sauté movement and the hip-knee joint and knee-ankle joint coordination in the non-dominant leg was evaluated across the six sub-phases using a continuous relative phase measure. The six sub-phases were classified as follows: Phase1: initial takeoff phase from 1st position, Phase 2: the top of center of mass (COM) position from 1st to 2nd position, Phase 3: the terminal landing phase to 2nd position, Phase 4: initial takeoff phase from 2nd position, Phase 5: the top of COM position from 2nd to 1st position, and Phase 6: the terminal landing phase to 1st position. Phase deviations were used to quantify the movement pattern and inter-joint coordination variability, where larger deviation values meant a more variable relationship between the two joints. Results: The dancers exhibited greater phase deviations during landing at a wider base of support, but a lower phase deviation at a narrower base of support following fatigue. The dancers showed less consistent inter-joint coordination between the hip and knee and between the knee and ankle following fatigue during phases 2 and 5 (airborne phase) and phase 4 (lowest center of mass phase). Conclusion: The present results suggest that the inter-joint coordination deteriorated during relatively difficult phases, and this change may put dancers at risk for injury.

Original languageEnglish
Pages (from-to)750-757
Number of pages8
JournalJournal of Medical and Biological Engineering
Volume41
Issue number5
DOIs
Publication statusPublished - 2021 Oct

All Science Journal Classification (ASJC) codes

  • Biomedical Engineering

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