The menstrual cycle and passive properties of the musculatotendinous unit
Item
- Title
- The menstrual cycle and passive properties of the musculatotendinous unit
- Author(s)
- Totschnig, Berit
- Abstract
- IntroductionThere has been a higher incidence in female athletes of anterior cruciate ligament (ACL) injuries. An increase in knee joint laxity, as seen in women and a decrease in lower limb stiffness, has been suggested as one of the main risk factors for ACL injuries. As oestrogen receptors have been found on ACL ligaments and skeletal muscle tissue one potential causative factor might be the hormonal fluctuation during the menstrual cycle. The objective of this study was to deepen this research and highlight any variations of musculotendinous stiffness during the ovarian cycle. MethodsEleven healthy female participants (mean age 23.7 ± 2.28 years) were age matched with 11 healthy males (mean age 28.45 ± 7.82 years). Passive musculotendinous stiffness was assessed via a straight leg raise protocol in three different phases of the menstrual cycle in females, and in three consecutive weeks in the males. ResultsThe collated data showed no significant alteration of musculotendious stiffness in the female subjects throughout the menstrual cycle. The control male data showed significant change with regards to moment data, strain energy and stiffness. Moment measurements revealed a significant increase at 0° from phase 1 to both phase 2 and phase 3 (P< 0.001). There was also a significant increase in moment at 30° from phase 1 to both phase 2 and phase 3 (P <0.001); and at maximum° from phase 1 to phase 3 and phase 2 to phase 3 (P=0.020; P=0.029). Measurements regarding stiffness revealed a significant decrease at 30° from phase 1 to both phase 2 and phase 3 (P< 0.001). Additionally there was a significant increase in strain energy at 30° from phase 1 to both phase 2 and phase 3 (P< 0.001); and at maximum° from from phase 1 to both phase 2 and phase 3 (P< 0.001; P=0.039) and phase 2 to phase 3 (P=0.041). ConclusionConcluding from the collated data there is no alteration throughout the menstrual cycle in passive musculotendinous stiffness indicating no influences of hormonal fluctuations, in this present study. The significant results of the male population is most likely due to the participation of the males in other studies involving lower limb mechanics.
- presented at
- British College of Osteopathic Medicine
- Date Accepted
- 2013
- Date Submitted
- 14.11.2018 11:47:37
- Type
- osteo_thesis
- Language
- English
- Number of pages
- 23
- Submitted by:
- 4457
- Pub-Identifier
- 16321
- Inst-Identifier
- 1076
- Keywords
- laxity; menstrual-cycle; musculotendinous stiffness; oestrogen; straight leg raise
- Recommended
- 0
- Item sets
- Thesis
Totschnig, Berit, “The menstrual cycle and passive properties of the musculatotendinous unit”, Osteopathic Research Web, accessed May 4, 2024, https://www.osteopathicresearch.com/s/orw/item/2028