ABSTRACT
(1) Background: The influence of the menstrual cycle on physical fitness in athletes is controversial in the scientific literature. There is a marked fluctuation of sex hormones at three key points of the menstrual cycle, where estrogen and progesterone vary significantly. Hormonal contraception induces hormonal levels different from the natural menstrual cycle, requiring specific study in relation to physical fitness. (2) Method: Women aged 18 to 40 years with regular natural menstrual cycles and women using hormonal contraception were recruited, creating two study groups. All participants needed to be athletes classified as level II-III, based on training volume/physical activity metrics, among other variables. To assess their physical fitness, cardiorespiratory fitness (measured by VËO2max), high-speed strength, hand grip strength, and flexibility were evaluated. Blood samples were taken to determine the menstrual cycle phase through analysis of sex hormone levels. Additionally, urine tests for ovulation detection were performed for the natural menstrual cycle group. Neurosensory stimulation tests were incorporated to measure sensory thresholds and pain thresholds in each phase. Body composition in each phase and its relationship with the other variables were also taken into account. (3) Results: Athletes in the natural cycling group showed differences in VËO2max (mL·kg-1·min-1) (phase I = 41.75 vs. phase II = 43.85 and (p = 0.004) and phase I vs. phase III = 43.25 mL·kg-1·min-1 (p = 0.043)), as well as in body weight (phase I = 63.23 vs. phase III = 62.48 kg; p = 0.006), first pain threshold (phase I = 1.34 vs. phase II = 1.69 (p = 0.027) and phase III = 1.59 mA (p = 0.011)), and sensitive threshold (phase I = 0.64 vs. phase II = 0.76 mA (p = 0.017)). The pain threshold was found to be an important covariate in relation to VËO2max, explaining 31.9% of the variance in phase I (p = 0.006). These findings were not observed between the two phases of contraceptive cycling. (4) Conclusion: The natural menstrual cycle will cause significant changes in the physical fitness of athletes. The use of hormonal contraception is not innocuous. Women with natural cycles show an increase in cardiorespiratory fitness in phases II and III, which is a factor to be considered in relation to training level and workload.
ABSTRACT
BACKGROUND: Current practice for physical wellbeing of people in a Prolonged Disorder of Consciousness (PDOC) is variable. A scoping literature review identified no agreed standard of care for physical management of those in a PDOC. This study addressed this deficit using a consensus process applied using nominal group technique. AIM: The aims of this project were to promote best practice for physical management in PDOC, by identifying consensus for: 1) a pathway of care; and 2) current best practice recommendations. DESIGN: A consensus process using nominal group technique. SETTING: Representation from national, purposively selected, rehabilitation services assessing and managing people in a PDOC in the UK. POPULATION: The population to whom the consensus process relates are people in a PDOC, requiring physical management. METHODS: An initial meeting with selected clinical experts from national centres was conducted to set terms of reference. A consensus meeting using nominal group technique (N.=33) then followed. Experts were initially asked to review systematic review findings reproduced as statements. Following systematic refinement, they were then asked to vote on the importance and relevance of statements. RESULTS: Following the nominal group process, 25 initial recommendations were refined to 19, which expressed the principles of physical management for people with a Prolonged Disorder of Consciousness. Statements are grouped into "acute-care" (6-recommendations), "postacute care" (10-recommendations) and "long-term care" (3-recommendations). Across the participants, agreement with the final recommendation statements ranged from 100-61% (N.=33-20), 15 of the statements were supported by 85% or more experts (N.=29). In addition, a clinical pathway of care, incorporating the recommendation principles was produced (agreement from 28 experts, 83%). CONCLUSIONS: The recommendations provide a basis for standardising current practice. They provide a standard against which care, and effectiveness can be evaluated. An accessible guideline document is planned for publication to enable implementation into practice, supported by online resources. CLINICAL REHABILITATION IMPACT: Recommendations have been produced under the headings of "acute care," "postacute care" and "long-term care." In addition, a pathway for provision of care interventions has been identified for the physical management of people in a prolonged disorder of consciousness.
