Muscle co-contraction and pre-activation in knee and ankle joint during a typical Tai Chi brush-knee twist-step
This study aimed to investigate the co-contraction and pre-activation of agonistic and antagonistic muscles in experienced Tai Chi (TC) practitioners during normal walking (NW) and brush-knee twist-step (BKTS). The electromyographic activities of rectus femoris, biceps femoris, and tibialis anterior and lateral gastrocnemius muscles were collected during BKTS and NW in 28 TC practitioners. The pre-activation of knee and ankle joints before initial landing of left foot, and the co-contraction of knee and ankle joint in double-stance phase I (DSI), single-stance phase (SS), double-stance phase II (DSII), and swing phase (SW) were calculated during BKTS and NW. Ankle co-contraction significantly increased during DSI and SS in BKTS movements than compared with that in NW. For DSI and SW, SS and DSII, and DSII and SW, a significant difference was found in BKTS. The pre-activation of knee joint significantly decreased in BKTS and NW. This study indicated greater ankle joint muscle co-contraction in DSI and SS of stance phase and lower knee joint muscle co-contraction and pre-activation than in NW in BKTS movement. In addition, greater ankle joint muscle co-contraction was observed in the DSI, SS, and DSII of stance phase than those of swing phase in BKTS movement.
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Aiheet: | kamppailu-urheilu harjoitus lihas polvi jalka nivel supistus aktivaatio kilpakävely biomekaniikka lihassähkökäyrä |
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Aihealueet: | kamppailu-urheilu |
Tagging: | Tai Chi Sprunggelenk |
DOI: | 10.1080/15438627.2021.2020788 |
Julkaisussa: | Research in Sports Medicine |
Julkaistu: |
2023
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Vuosikerta: | 31 |
Numero: | 5 |
Sivuja: | 628-637 |
Julkaisutyypit: | artikkeli |
Kieli: | englanti (kieli) |
Taso: | kehittynyt |