Chinese Journal of Rehabilitation Theory and Practice ›› 2024, Vol. 30 ›› Issue (3): 352-361.doi: 10.3969/j.issn.1006-9771.2024.03.014

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Effect of blood flow restriction combined with low-intensity plyometric jump training on functional ankle instability

LIANG Xinwen1, HAN Yabing2, WANG Shilin1, PAN Weimin1,3(), JIANG Yingpeng1, WEI Xiaoyu1, HUANG Yan1   

  1. 1. Xi'an Physical Education University, Xi'an, Shaanxi 710068, China
    2. Medical College of Ankang University, Ankang, Shaanxi 725000, China
    3. Engineering Research Center of Innovative Technology of Intelligent Sports Equipment, Universities of Shaanxi Province, Xi'an, Shaanxi 710068, China
  • Received:2023-10-13 Revised:2024-01-25 Published:2024-03-25 Online:2024-04-01
  • Contact: PAN Weimin E-mail:panweimin@163.com
  • Supported by:
    Shaanxi Natural Science Basic Research Foundation(2021JM-530)

Abstract:

Objective To investigate the effect of blood flow restriction combined with low-intensity plyometric jump training (LI-PJT+BFR) on lower limb dynamic postural control of functional ankle instability (FAI) in college students.

Methods From March to May, 2023, 40 FAI college students were recruited from Xi'an Physical Education University, and randomly divided into high-intensity plyometric jump training (HI-PJT, n = 14) group, low-intensity plyometric jump training (LI-PJT, n = 13) group and LI-PJT+BFR group (n = 13). All the groups finished the six-week corresponding training. The maximum voluntary isometric contraction (MVIC) of tibialis anterior, peroneus longus, lateral head of gastrocnemius, gluteus maximus, vastus lateralis, biceps femoris and semitendinosus were measured, and the root mean square (RMS) of electromyography of these muscles was measured during the single-leg landing (SLL), using wireless surface electromyography before and after intervention. Moreover, they were assessed with Y-balance test and Cumberland Ankle Instability Tool (CAIT).

Results MVIC and RMS of the target muscles improved after intervention in all the groups (t > 2.218, P < 0.05), except MVIC and RMS of peroneus longus, gluteus maximus, biceps femoris and semitendinosus in LI-PJT group, and RMS of peroneus longus in LI-PJT+BFR group; and MVIC and RMS of the target muscles were the least in LI-PJT group (F > 3.262, P < 0.05), except those of peroneus longus. The extension scores of Y-balance test and the total score improved after intervention (t > 2.485, P < 0.05), and they were the least in LI-PJT group (F > 5.042, P < 0.05). The CAIT score improved after intervention (t > 5.227, P < 0.001), and it was the least in LI-PJT group (F = 4.640, P < 0.05).

Conclusion LI-PJT+BFR could improve lower limb dynamic postural control of FAI college students, which is similar to HI-PJT.

Key words: functional ankle instability, blood flow restriction training, plyometric jump training

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