[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"female-athletes\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:female-athletes":28},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,3,0,[8,44,82],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":4,"eligibilityCriteria":15,"healthyVolunteers":16,"sex":17,"minAge":18,"maxAge":19,"enrollmentInfo":20,"targetDuration":4,"studyType":23,"phases":4,"briefSummary":24,"conditions":25,"keywords":4,"overallStatus":32,"whyStopped":4,"lastUpdateSubmitDate":33,"lastUpdatePostDateStruct":34,"startDateStruct":37,"completionDateStruct":39,"leadSponsor":41,"locationsCount":4},"100623685","investigating-the-effects-of-time-of-day-and-menstrual-cycle-phase-low-and-high-progesterone-on-females-cognitive-and-strength-performance-100623685",false,"NCT07399847","Investigating the Effects of Time-of-day and Menstrual Cycle Phase (Low and High Progesterone) on Female's Cognitive and Strength Performance","Effects of Time-of-day and Menstrual Cycle Phase (Low and High Progesterone) on Female's Cognitive and Strength Performance","Inclusion Criteria:\n\n* Female (assigned at birth)\n* Aged 18-30 years\n* Tier 2 athlete which requires the participants to identify with a specific sport, train with a purpose to compete, regularly train \\~3 times per week and compete at a local level (for example being a member of a BUCS sport and competing regularly with that sport)\n* Regular menstrual cycle - considered between 21-35-day cycles with at least 9 periods a year.\n\nExclusion Criteria:\n\n* The current\u002Fprevious (in the last 3 months) use of any contraceptive method that alter the menstrual cycle\n* The use of the emergency contraceptive pill either 3 months prior to the study or during the study\n* Diagnosis of menstrual disorders including (but not exclusively) endometriosis and Polycystic Ovary Syndrome (PCOS)\n* A formal diagnosis of sleep disorders such as insomnia\n* Consume \\>400mg\u002Fday of caffeine\n* A musculoskeletal injury in the past 3 months\n* A formal diagnosis of neurological or psychiatric disorders such as Attention-Deficit\u002FHyperactivity Disorder (ADHD), Autism Spectrum Disorder (ASD), Dyslexia or schizophrenia\n* Taking prescribed medication that may affect sleep for example stimulants such as Methylphenidate\n* No regular night shift work\n* No trans-meridian travel within 10 days of their expected participation dates (travel that will cause jetlag)\n* Have given blood in the last 12 weeks - this is not strictly an exclusion; participants will just need to wait until after 12 weeks before taking part in the study",true,"FEMALE","18 Years","30 Years",{"count":21,"type":22},30,"ESTIMATED","OBSERVATIONAL","This study is designed to determine whether time-of-day and menstrual cycle phase influence athletic performance and is expected to contribute valuable insight into how both time-of-day, and hormonal factors can influence performance and expand existing research. This study aims to support more inclusive, effective and personalised approaches to training and competition schedules for female athletes.\n\nThe study will involve two testing days that require a participant to complete a compilation of tests at 07:00, 12:00 and 18:00 hours. The testing days will be arranged for when a participant is in phase 1 (lowest levels of progesterone in the menstrual cycle) and phase 4 (highest level of progesterone in the menstrual cycle). The tests will examine a participant's executive function and physical strength.\n\nThis study will aim to recruit thirty 18-30-year-old females from Lancaster University who identify with a sport that they train \\~3 times a week for with a purpose to compete. The females recruited must have a regular menstrual cycle and no history of sleep disorders.\n\nAim: To investigate the effects of time-of-day and menstrual cycle phase (low and high progesterone levels) on executive function and strength in females.\n\nObjectives:\n\n1. To determine the effects of time-of-day on executive function and strength tests.\n2. To determine the effects of menstrual cycle phase on executive function and strength tests.\n3. To examine if there is an interaction between time-of-day and menstrual cycle phase on executive function and strength tests.",[26,27,28,29,30,31],"Circadian Rhythm","Menstrual Cycle Phase","Female Athletes","Executive Function (Cognition)","Eumenorrhea","Strength","NOT_YET_RECRUITING","2026-02-05",{"date":35,"type":36},"2026-02-10","ACTUAL",{"date":38,"type":22},"2026-02",{"date":40,"type":22},"2026-09",{"name":42,"class":43},"Lancaster University","OTHER",{"id":45,"slug":46,"hasResults":11,"nctId":47,"briefTitle":48,"officialTitle":49,"acronym":4,"eligibilityCriteria":50,"healthyVolunteers":16,"sex":17,"minAge":51,"maxAge":52,"enrollmentInfo":53,"targetDuration":4,"studyType":55,"phases":56,"briefSummary":58,"conditions":59,"keywords":62,"overallStatus":71,"whyStopped":4,"lastUpdateSubmitDate":72,"lastUpdatePostDateStruct":73,"startDateStruct":75,"completionDateStruct":77,"leadSponsor":79,"locationsCount":81},"100600087","phase-3-effects-of--alanine-and-sodium-bicarbonate-supplementation-on-physical-capacity-and-biochemical-markers-concentrations-100600087","NCT07092930","Effects of β-alanine and Sodium Bicarbonate Supplementation on Physical Capacity and Biochemical Markers Concentrations","Evaluation of the Synergistic Effect of β-alanine and Sodium Bicarbonate Supplementation on Physical Capacity and Blood Biochemical Markers Concentrations in Trained Female Basketball Players","Inclusion Criteria:\n\n* written consent to participate,\n* general good health condition,\n* a current medical clearance to practice sports,\n* training experience: at least 4 years,\n* minimum of 4 workout sessions (in the discipline covered by the study) a week.\n\nExclusion Criteria:\n\n* current injury,\n* any health-related contraindication,\n* declared general feeling of being unwell,\n* taking supplements, especially ergogenic supplements that modulate extra- and intracellular capacity 3 months prior to research (except taking protein and\u002For carbohydrate powders, isotonic drinks),\n* unwilling to follow the study protocol.","16 Years","40 Years",{"count":54,"type":22},100,"INTERVENTIONAL",[57],"PHASE3","This randomized, double-blind, placebo-controlled, parallel-group study aims to evaluate the potential synergistic effect of beta-alanine (BA) and sodium bicarbonate (SB) supplementation, compared to their separate administration or placebo (PL), on physical performance and selected blood biochemical markers in highly trained female basketball players.",[60,61,28],"Supplementation","Sports",[63,64,65,66,67,68,69,70],"Beta-alanine","Sodium bicarbonate","Ergogenic aids","Sports nutrition","Team sports","Physical capacity","Body composition","Blood and urine biochemical markers","RECRUITING","2025-07-28",{"date":74,"type":36},"2025-07-30",{"date":76,"type":36},"2023-10-01",{"date":78,"type":22},"2025-12",{"name":80,"class":43},"Poznan University of Physical Education",1,{"id":83,"slug":84,"hasResults":11,"nctId":85,"briefTitle":86,"officialTitle":86,"acronym":87,"eligibilityCriteria":88,"healthyVolunteers":16,"sex":17,"minAge":18,"maxAge":89,"enrollmentInfo":90,"targetDuration":4,"studyType":55,"phases":92,"briefSummary":94,"conditions":95,"keywords":102,"overallStatus":71,"whyStopped":4,"lastUpdateSubmitDate":114,"lastUpdatePostDateStruct":115,"startDateStruct":117,"completionDateStruct":119,"leadSponsor":121,"locationsCount":81},"100588115","pre-sleep-creatine-enhances-anaerobic-power-in-recreationally-active-females-100588115","NCT06937190","Pre-Sleep Creatine Enhances Anaerobic Power in Recreationally Active Females","SleepCrM","Inclusion Criteria:\n\nFemale, aged 18 to 25 years\n\nRecreationally active (engaging in structured resistance training 3-4 times per week for the past 6 months)\n\nRegular menstrual cycles (used for scheduling purposes)\n\nAble and willing to provide informed consent\n\nAgreement to maintain normal diet and training routines throughout the study\n\nExclusion Criteria:\n\nHistory of musculoskeletal injury affecting lower or upper limbs within the past 6 months\n\nKnown allergy or intolerance to creatine or maltodextrin\n\nUse of performance-enhancing substances or supplements within the last 30 days\n\nUse of recovery modalities such as massage, cryotherapy, or compression garments during the study period\n\nCurrent use of anti-inflammatory medication\n\nPregnancy or breastfeeding\n\nInability to comply with study protocol or scheduled assessments","25 Years",{"count":91,"type":22},24,[93],"NA","This study is a randomized, double-blind, placebo-controlled trial designed to examine the effects of pre-sleep creatine monohydrate supplementation on anaerobic performance and muscle damage markers in recreationally active females. Participants will be randomly assigned to receive either 5 grams of creatine monohydrate or a placebo 30 minutes before sleep for seven consecutive days. Anaerobic performance will be assessed using the Wingate Anaerobic Test, evaluating peak and average power output and fatigue index. Blood samples will be collected before and after the supplementation period to analyze markers of muscle damage, including creatine kinase and lactate dehydrogenase. This study aims to provide insight into the efficacy of short-term, time-specific creatine supplementation for enhancing performance and recovery.",[96,97,98,99,100,101,28],"Anaerobic Performance","Sports Nutrition","Exercise Recovery","Muscle Fatigue","Creatine Supplementation","Recreational Physical Activity",[103,104,105,106,107,108,109,110,111,112,113],"Creatine Monohydrate","Pre-Sleep Supplementation","Anaerobic Power","Wingate Test","Muscle Damage Markers","Creatine Kinase (CK)","Lactate Dehydrogenase (LDH)","Female Exercise Performance","Nutritional Ergogenic Aid","Resistance Training","Recovery Enhancement","2025-04-15",{"date":116,"type":36},"2025-04-22",{"date":118,"type":36},"2025-04-01",{"date":120,"type":22},"2025-07-10",{"name":122,"class":43},"Ankara Yildirim Beyazıt University"]