| Project/Area Number |
18K17861
|
|---|
| Research Category |
Grant-in-Aid for Early-Career Scientists
|
| Allocation Type | Multi-year Fund |
|---|
| Review Section |
Basic Section 59020:Sports sciences-related
|
|---|
| Research Institution | Teikyo Heisei University |
|---|
Principal Investigator |
MIYAZAKI Manabu 帝京平成大学, 健康メディカル学部, 助教 (00782921)
|
|---|
| Project Period (FY) |
2018-04-01 – 2022-03-31
|
| Project Status |
Completed (Fiscal Year 2021)
|
| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2020: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2019: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2018: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
|
|---|
| Keywords | 月経周期 / スティフネス / 関節可動域 / 受動的トルク / エストロゲン / プロゲステロン / 筋力 / 柔軟性 / 筋電図 / Hop test / 性ホルモン / 運動パフォーマンス / パフォーマンス |
|---|
| Outline of Final Research Achievements |
This study examined the variation in flexibility and motor performance during the menstrual cycle in healthy young women and its relationship to the menstrual cycle, and the following findings were made.
(1) ROM increased during the ovulatory and luteal phases compared to the follicular phase, respectively. There was no significant difference in anterior tibial translation in each phase, indicating that fluctuations in joint laxity during the menstrual cycle were smaller than those in muscle flexibility. (2) Maximal voluntary isometric muscle strength, muscle activity, and jumping performance increased during the luteal phase compared to the ovulatory phase. (3) Stiffness decreased during the ovulatory phase compared to the follicular phase. In contrast, isometric muscle strength did not change. Muscle strength fluctuations during the menstrual cycle were not correlated with fluctuations in muscle hardness, but were positively correlated with muscle activity.
|
| Academic Significance and Societal Importance of the Research Achievements |
本研究の結果より、月経周期が柔軟性と筋パフォーマンスに影響を与えていることが明らかとなった。これは、排卵期における前十字靭帯損傷の発症リスクが関節の弛緩性だけではなく、スティフネス（筋の柔軟性）とも関連することを示唆するものであり、臨床的に重要な知見である。また、月経周期によって変動し、傷害発生のリスクが異なることを考慮する必要があると考えられる。
本研究の知見は、女性の月経周期における内的要因の変動を考慮した新たなスポーツ傷害の予防プログラムの構築の一助となることが期待でき、有益な情報となるものである。
|
