Gender differences in knee kinematics and muscle activity during single limb drop landing

Yasuharu Nagano, Hirofumi Ida, Masami Akai, Toru Fukubayashi

    研究成果: Article

    84 引用 (Scopus)

    抄録

    The likelihood of sustaining an ACL injury in a noncontact situation is two to eight times greater for females than for males. However, the mechanism and risk factors of ACL injury are still unknown. We compared knee kinematics as well as electromyographic activity during landing between male and female athletes. Eighteen male athletes and nineteen female athletes participated in the experiment. The angular displacements of flexion/extension, valgus/varus, and internal/external tibial rotation, as well as the translational displacements of anterior/posterior tibial translation during single limb drop landing were calculated. Simultaneous electromyographical activity of the rectus femoris (RF) and hamstrings (Ham) was taken. During landing, internal tibial rotation of the females was significantly larger than that of the males, while differences were not observed in flexion, varus, valgus, and anterior tibial translation. Hamstrings/quadriceps ratio (HQR) for the 50 ms time period before foot contact was greater in males than in females. The mechanism of noncontact ACL injury during a single limb drop landing would be internal tibial rotation combined with valgus rotation of the knee. Increased internal tibial rotation combined with greater quadriceps activity and a low HQR could be one reason female athletes have a higher incidence of noncontact ACL injuries.

    元の言語English
    ページ(範囲)218-223
    ページ数6
    ジャーナルKnee
    14
    発行部数3
    DOI
    出版物ステータスPublished - 2007 6

    Fingerprint

    Biomechanical Phenomena
    Knee
    Extremities
    Athletes
    Muscles
    Quadriceps Muscle
    Foot
    Anterior Cruciate Ligament Injuries
    Incidence

    ASJC Scopus subject areas

    • Orthopedics and Sports Medicine

    これを引用

    Gender differences in knee kinematics and muscle activity during single limb drop landing. / Nagano, Yasuharu; Ida, Hirofumi; Akai, Masami; Fukubayashi, Toru.

    :: Knee, 巻 14, 番号 3, 06.2007, p. 218-223.

    研究成果: Article

    Nagano, Yasuharu ; Ida, Hirofumi ; Akai, Masami ; Fukubayashi, Toru. / Gender differences in knee kinematics and muscle activity during single limb drop landing. :: Knee. 2007 ; 巻 14, 番号 3. pp. 218-223.
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