[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100653320":3},{"organization":4,"outcomesModule":7,"designInfo":66,"detailedDescription":77,"studyPopulation":71,"armGroups":78,"interventions":95,"overallOfficials":109,"centralContacts":118,"locations":71,"responsibleParty":124,"collaborators":128,"id":130,"slug":131,"hasResults":132,"nctId":133,"briefTitle":134,"officialTitle":135,"acronym":136,"eligibilityCriteria":137,"healthyVolunteers":138,"sex":139,"minAge":140,"maxAge":141,"enrollmentInfo":142,"targetDuration":71,"studyType":145,"phases":146,"briefSummary":148,"conditions":149,"keywords":151,"overallStatus":155,"whyStopped":71,"lastUpdateSubmitDate":156,"lastUpdatePostDateStruct":157,"startDateStruct":160,"completionDateStruct":162,"leadSponsor":164,"locationsCount":71},{"fullName":5,"class":6},"Debre Markos University","OTHER",{"primaryOutcomes":8,"secondaryOutcomes":13,"otherOutcomes":37},[9],{"measure":10,"description":11,"timeFrame":12},"5-km Time-Trial Performance","Change in 5-km time-trial completion time from baseline to Week 6 and Week 12, comparing the Fartlek Training Group (FTG), Hill Circuit Training Group (HCTG), and Roll-On Training Group (ROTG).","Baseline week 6 and Week 12",[14,18,22,26,30,33],{"measure":15,"description":16,"timeFrame":17},"VO₂max","Change in maximal oxygen uptake (VO₂max), measured in mL\u002Fkg\u002Fmin, from baseline to Week 6 and Week 12, comparing FTG, HCTG, and ROTG.","Baseline, Week 6, and Week 12",{"measure":19,"description":20,"timeFrame":21},"Blood Lactate Concentration","Change in blood lactate concentration, measured in mmol\u002FL, immediately following prescribed conditioning sessions to characterize the acute physiological response to Fartlek, Hill Circuit, and Roll-On training.","Immediately pre-training and post-training during intervention sessions in Weeks 1-12",{"measure":23,"description":24,"timeFrame":25},"Rating of Perceived Exertion (RPE)","Session rating of perceived exertion will be measured using the OMNI perceived-exertion scale immediately following each conditioning session.","Immediately after each training session during Weeks 1-12",{"measure":27,"description":28,"timeFrame":29},"Heart Rate Response","Change in average and maximum heart rate during prescribed conditioning sessions to characterize the acute cardiovascular response to Fartlek, Hill Circuit, and Roll-On training.","During each training session during Weeks 1-12",{"measure":31,"description":32,"timeFrame":17},"Complete Blood Count (CBC)","Change in selected hematological parameters, including hemoglobin, hematocrit, red blood cell count parameters.",{"measure":34,"description":35,"timeFrame":36},"5-km Performance Score","Change in performance score calculated using the applicable World Athletics scoring table based on 5-km time-trial performance from baseline to Week 12, comparing FTG, HCTG, and ROTG.","Baseline and Week 12",[38,42,46,50,54,57,60,63],{"measure":39,"description":40,"timeFrame":41},"Delayed-Onset Muscle Soreness (DOMS)","Change in self-reported muscle soreness following each prescribed conditioning session to assess post-exercise muscular recovery.","Immediately post-training and 24 hours after each conditioning session during Weeks 1-12",{"measure":43,"description":44,"timeFrame":45},"Recovery and Wellness","Change in recovery and wellness indicators, including sleep duration, sleep quality, fatigue, stress, mood, and overall wellness score, assessed following conditioning sessions.","Before and 24 hours after each conditioning session during Weeks 1-12",{"measure":47,"description":48,"timeFrame":49},"Acute Training Load","Weekly acute internal training load calculated from accumulated session training loads, where session training load is calculated as session duration multiplied by session rating of perceived exertion (sRPE).","Weeks 1-12",{"measure":51,"description":52,"timeFrame":53},"Chronic Training Load","Chronic internal training load calculated as the rolling 4-week average of weekly training load during the intervention.","Weeks 4-12",{"measure":55,"description":56,"timeFrame":49},"Training Monotony","Weekly training monotony calculated as the mean daily training load divided by the standard deviation of daily training load within each training week.",{"measure":58,"description":59,"timeFrame":49},"Training Strain","Weekly training strain calculated as weekly training load multiplied by training monotony during the 12-week intervention.",{"measure":61,"description":62,"timeFrame":49},"Freshness Index","Weekly freshness index calculated as chronic training load minus acute training load to characterize changes in training readiness during the intervention.",{"measure":64,"description":65,"timeFrame":53},"Acute:Chronic Workload Ratio (ACWR)","Weekly acute:chronic workload ratio calculated as acute training load divided by chronic training load during the intervention.",{"allocation":67,"interventionModel":68,"interventionModelDescription":69,"primaryPurpose":70,"observationalModel":71,"timePerspective":71,"maskingInfo":72},"RANDOMIZED","PARALLEL","Participants are randomly allocated to one of three parallel training groups: Fartlek Training Group (FTG), Hill Circuit Training Group (HCTG), or Roll-On Training Group (ROTG). Each group receives its assigned training modality for 12 weeks, with outcomes assessed at baseline, Week 6, and Week 12.","TREATMENT",null,{"masking":73,"maskingDescription":74,"whoMasked":75},"SINGLE","Outcome assessors are blinded to participants' intervention group assignments during outcome assessment.",[76],"OUTCOMES_ASSESSOR","Long-distance running places substantial physiological and mechanical demands on athletes. Appropriate conditioning is therefore important for developing the capacity to tolerate training stress, recover effectively, and maintain or improve running performance. Different conditioning modalities may impose distinct physiological and mechanical demands, which may result in differences in immediate exercise responses, post-exercise recovery, training load, and longer-term adaptation.\n\nThis randomized controlled trial will compare three conditioning modalities. Fartlek training, hill circuit training, and roll-on training in well-trained long-distance runners. Twenty-one eligible runners will be randomly allocated to one of three parallel training groups: the Fartlek Training Group, Hill Circuit Training Group, or Roll-On Training Group. Each group will complete its assigned conditioning modality for 12 weeks, comprising 24 prescribed training sessions.\n\nThe study will examine three dimensions of response to conditioning. Immediate responses will include physiological and perceptual responses measured during or immediately after training. Residual responses will focus on recovery-related responses during the 24 hours following conditioning sessions. Cumulative responses will examine changes that develop over repeated exposure to the training intervention, including changes in running performance and aerobic fitness.\n\nRepeated measurements will be collected throughout the intervention to characterize responses to the three conditioning modalities. Measures will include heart rate, blood lactate concentration, rating of perceived exertion, delayed-onset muscle soreness, recovery and wellness indicators, internal training load, 5-km time-trial performance, and VO₂max. Training-load measures will be derived from session rating of perceived exertion and session duration and will be used to characterize the training demands accumulated during the intervention.\n\nThe study will compare the response patterns among the three intervention groups to determine whether Fartlek, hill circuit, or roll-on training produces different immediate, residual, and cumulative responses in well-trained long-distance runners. The findings are intended to contribute evidence for the selection and progression of conditioning modalities while considering training stimulus, recovery, and performance-related responses.",[79,85,90],{"label":80,"type":81,"description":82,"interventionNames":83},"Fartlek Training Group (FTG)","EXPERIMENTAL","A structured Fartlek running training intervention administered for 12 weeks to trained long-distance runners. The intervention consists of planned variable-intensity running bouts with prescribed duration, repetitions, running intensity, recovery periods, and progressive workload according to the study protocol. Training sessions will be supervised and standardized across participants.",[84],"Behavioral: Fartlek training",{"label":86,"type":81,"description":87,"interventionNames":88},"Hill Circuit Training Group (HCTG)","Participants assigned to the Hill Circuit Training Group (HCTG) will receive the prescribed Hill Circuit training intervention during the 12-week randomized controlled trial. The intervention consists of structured hill-running and circuit-based training designed for trained long-distance runners. Training intensity, duration, repetitions, recovery periods, and progression will be prescribed according to the study protocol.",[89],"Behavioral: Hill Circuit",{"label":91,"type":81,"description":92,"interventionNames":93},"Roll-On Training Group (ROTG)","Participants assigned to the Roll-On Training Group (ROTG) will receive the prescribed Roll-On training intervention during the 12-week randomized controlled trial. The intervention consists of structured progressive running sessions designed for trained long-distance runners. Training intensity, duration, repetitions, recovery periods, and progression will be prescribed according to the study protocol.",[94],"Behavioral: Roll-On",[96,101,105],{"type":97,"name":98,"description":99,"armGroupLabels":100,"otherNames":71},"BEHAVIORAL","Fartlek training","A structured variable-intensity running intervention administered for 12 weeks to trained long-distance runners. Each prescribed session includes standardized warm-up and cool-down periods, alternating faster and slower running at prescribed intensities, and prescribed recovery periods. Running duration, intensity, repetitions, recovery intervals, and workload progression are standardized according to the study protocol. Training sessions are supervised, and exercise intensity is monitored using heart rate, rating of perceived exertion, running pace, and prescribed workload.",[80],{"type":97,"name":102,"description":103,"armGroupLabels":104,"otherNames":71},"Hill Circuit","A structured hill-running and circuit-based training intervention administered for 12 weeks to trained long-distance runners. Each prescribed session includes standardized warm-up and cool-down periods, repeated uphill running bouts, running-based circuit exercises, and prescribed recovery intervals. Hill gradient, running duration, repetitions, exercise intensity, recovery intervals, and workload progression are standardized according to the study protocol. Exercise intensity is monitored using heart rate, rating of perceived exertion, running pace, and prescribed workload.",[86],{"type":97,"name":106,"description":107,"armGroupLabels":108,"otherNames":71},"Roll-On","A structured progressive running intervention administered for 12 weeks to trained long-distance runners. Each prescribed session includes standardized warm-up and cool-down periods, controlled running with planned gradual increases and decreases in running speed, and prescribed recovery periods where applicable. Running duration, speed progression, intensity, repetitions, recovery intervals, and workload progression are standardized according to the study protocol. Exercise intensity is monitored using heart rate, rating of perceived exertion, running pace, and prescribed workload.",[91],[110,114],{"name":111,"affiliation":112,"role":113},"Alemayehu, PHd","University of Gonder","STUDY_DIRECTOR",{"name":115,"affiliation":116,"role":117},"Gashaw, PHd","Bahir Dar University","STUDY_CHAIR",[119],{"name":120,"role":121,"phone":122,"phoneExt":71,"email":123},"Awoke Tibebu, MSc.","CONTACT","+251912073305","awoket27@gmail.com",{"type":125,"investigatorFullName":126,"investigatorTitle":127,"investigatorAffiliation":5,"oldNameTitle":71,"oldOrganization":71},"PRINCIPAL_INVESTIGATOR","Awoke Tibebu","Lecturer, Department of Sport Science",[129],{"name":116,"class":6},"100653320","immediate-residual-and-cumulative-effects-of-fartlek-hill-circuit-and-roll-on-training-in-long-distance-runners-100653320",false,"NCT07784140","Immediate, Residual, and Cumulative Effects of Fartlek, Hill Circuit, and Roll-On Training in Long-Distance Runners","Immediate, Residual, and Cumulative Effects of Fartlek, Hill Circuit, and Roll-On Training Modalities: A Comprehensive Examination of Conditioning in Long-Distance Runners","IRCT-LDR","Inclusion Criteria:\n\nMale long-distance runners aged 18-25 years VO₂max greater than 60 mL\u002Fkg\u002Fmin Weekly training volume of at least 60 km Training experience of at least 4 years Mercier score greater than 600 Currently engaged in regular long-distance running training Willing to participate in the 12-week training intervention Able to complete all required testing and monitoring procedures Provides written informed consent to participate in the study\n\nExclusion Criteria:\n\nCurrent musculoskeletal injury that prevents participation in training or testing Known cardiovascular, respiratory, metabolic, or other medical condition that limits strenuous exercise Current illness or condition that prevents participation in the intervention Use of medication or other treatment that may substantially affect exercise performance or physiological responses Failure to meet the required training or eligibility criteria Planned absence that would prevent adequate participation in the intervention Withdrawal of informed consent Any condition identified by the research team that makes continued participation unsafe",true,"MALE","18 Years","25 Years",{"count":143,"type":144},21,"ESTIMATED","INTERVENTIONAL",[147],"NA","This randomized controlled trial will compare Fartlek, hill circuit, and roll-on training in well-trained long-distance runners. Twenty-one eligible runners will be randomly assigned to one of three training groups and will complete a 12-week intervention comprising 24 prescribed training sessions. The study will evaluate immediate responses to conditioning, 24-hour recovery responses, and cumulative changes in running performance, aerobic fitness, and training-related responses. Outcomes will include heart rate, blood lactate concentration, rating of perceived exertion, delayed-onset muscle soreness, recovery and wellness indicators, internal training load, 5-km time-trial performance, and VO₂max. The findings will provide evidence regarding the comparative responses to these three conditioning modalities in well-trained long-distance runners.",[150],"Long Distance Running",[152,153,154],"Fartlek Training","Hill Circuit Training","Roll-On Training","NOT_YET_RECRUITING","2026-08-25",{"date":158,"type":159},"2026-08-26","ACTUAL",{"date":161,"type":144},"2026-09-21",{"date":163,"type":144},"2026-11-26",{"name":5,"class":6}]