4.7 Article

Comprehensive Lower Extremities Joints Range of Motion Profile in Futsal Players

Journal

FRONTIERS IN PSYCHOLOGY
Volume 12, Issue -, Pages -

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fpsyg.2021.658996

Keywords

futsal; muscle flexibility; injury risk; soft tissue injuries; rehabilitation

Funding

  1. Ramon y Cajal postdoctoral fellowship - Spanish Ministry of Science and Innovation [RYC2019-028383-I]
  2. State Research Agency (AEI)
  3. European Regional Development Fund (ERDF)
  4. project entitled Artificial intelligence for preparticipation screening and exercise prescription for sport and health purposes [35075]

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This study investigated the ROM profiles of lower extremities in elite futsal players, finding significant gender differences in hip and knee joint ROM values, with females having higher values. Additionally, a portion of male players and those from teams in the second division showed restricted ROMs. The study also identified bilateral asymmetries in a percentage of players' hip and knee ROMs.
The purposes of this study were to describe the lower extremities joints range of motion (ROM) profile using a comprehensive approach in futsal players and to examine potential player position (goalkeepers vs. outfield players), competitive level (first [top] division vs. second division), number of playing years, sex (males vs. females), and bilateral (dominant limb vs. non-dominant limb) differences. A total of 72 male and 67 female elite futsal players from 11 clubs were measured of passive hip (flexion with knee flexed [HFKF] and extended [HFKE], extension [HE], abduction [HA], external [HER], and internal [HIR] rotation), knee (flexion [KF]) and ankle (dorsiflexion with knee flexed [ADF(KF)] and extended [ADF(KE)]) ROMs. Bayesian inferences exploring differences between player position, competitive level, sex and limb were made. A Bayesian correlation analysis was conducted to explore the influence of playing years on joints ROMs. The results showed no significant player position or competitive level related differences in any average ROM score. However, statistically significant sex-related differences were documented whereby female players reported higher hip and knee joints ROM average values than their male counterparts. Especially relevant were the proportions of males (72%) and players from teams engaged in the second division (61%) displaying limited HFKE ROMs. Likewise, around 35% of all players showed restricted ADF(KF) ROMs. In addition, approximately 21, 18, 22, and 25% of the futsal players were identified as having bilateral asymmetries (>= 8 degrees) for HA, HIR, HER, and KF ROMs, respectively. Finally, Bayesian correlation analysis did not report any significant association between years of playing futsal and ROM measures (all r values < 0.34). The implications that these restricted HFKE and ADF(KF) ROMs and bilateral asymmetries in hip (abduction, internal and external rotation) and knee (flexion) ROMs caused by the practice of futsal may have on physical performance and injury risk warrant future research.

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