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- Title
Tibial acceleration profiles in young female athletes during the menstrual cycle as an indicator for dynamic stability.
- Authors
Hohmann, Erik; Livingstone, Elisabeth; Bryant, Adam; Tetsworth, Kevin; Imhoff, Andreas
- Abstract
Purpose: It is widely accepted that musculoskeletal injuries in sports are sports specific and not sex specific and raises the question as to why female athletes have a higher incidence of knee injuries in particular ruptures of the anterior cruciate ligament. Tibial acceleration is one of the main indicators of dynamic stability and tibial shock attenuation. It has been shown that athletes who are able to arrest tibial acceleration faster tend to display greater knee functionality whether ACL deficient or reconstructed. The purpose of this study is to investigate tibial acceleration profiles in young female athletes during the different stages of the menstrual cycle. Methods: Eleven females aged 16-18 years participated in this study and were compared to a male control group. Female subjects were tested at each of the four phases of the menstrual cycle: menses, follicular, ovulation and luteal. On each test occasion, acceleration transients at the proximal tibia were measured whilst subjects performed an abrupt deceleration task (simulated netball landing). The male control group was recruited from the local development rugby team. Results: No significant differences were found between the different phases of the menstrual cycle for peak tibial acceleration (PTA; P=0.57), and time to zero tibial acceleration (TZTA; P=0.59). However, there was a significant difference for time to peak tibial acceleration (TPTA) between menstruation and follicular (P=0.04), menstruation and ovulation (P=0.001), menstruation and luteal phase (p=0.002), and follicular phase and ovulation (P=0.007). In the male control group, no significant between test session differences were observed for PTA (P=0.48), TZTA (P=0.08) and TPTA (P=0.29). While there were no significant between group differences for PTA (P=0.21) and TZTA (P=0.48), significant between-group differences were observed for TPTA (P=0.001). Conclusion: The results of this project strongly suggest that serum estrogen fluctuations have an effect on tibial acceleration profiles in young female athletes during different phases of the menstrual cycle.
- Subjects
MUSCULOSKELETAL system injuries; KNEE injuries; WOMEN athletes
- Publication
South African Journal of Sports Medicine, 2015, Vol 27, p25
- ISSN
1015-5163
- Publication type
Article