Stressors and Recovery Regulation on the Super-compensation Effect
Status: Recruiting

Purpose: Investigating the effects of stressors and recovery regulation on the super-compensation effect of high-intensity intensive training (IT) in endurance athletes. Methods: This study will recruit 176 competitively trained endurance adult athletes. Participants will conduct a 7-week 3-stage experiment, including 3 weeks of regular training, 3 weeks of 130% progressive IT, and 1 week of 55% taper. Measurement will include training responses (performance and fatigue symptoms), stressors, recovery regulation, and mood state at baseline, during and after regular training, IT, and taper separately. According to the performance after taper, all participants will category into either the responder or non-responder of well-response to supercompensation effect. Statistic analysis: Independent t-test, Chi-squared test, and binary logistic regression will be used to compare the difference in training responses, stressors, recovery regulation, and mood state characteristics between responder and non-responder groups. P value sets at 0.15 for identifying the potential predictors. Logistic stepwise multiple regression will be used further to determine the significant predictors for the responders of well-response to the super-compensation among endurance athletes. P value sets at 0.05.

Eligibility:
- EligibilityCriteria: Inclusion Criteria:  Athletes aged 18 or above with endurance-type competitive sports experience. For instance, athletes who have participated in track events of 400 meters or longer, marathons, road cycling, swimming, rowing, race walking, triathlons, orienteering, and similar competitive events. A habitual training regimen of at least 6 hours per week. For instance, training three times a week for at least 2 hours each session. Minimum of 3 years of training experience, such as being part of a school team or a specialized athlete. No severe injuries within the past year. For instance, severe non-regenerative anemia, craniotomy due to cerebral aneurysm, acute myocardial infarction, severe hepatic cirrhosis, severe systemic lupus erythematosus nephritis, severe rheumatoid arthritis, severe head trauma, and similar conditions. Not taking substances affecting athletic, physiological, and psychological performance. For instance, unauthorized drugs, prohibited substances, growth hormones like somatotropin and related substances, β2 agonists, hormone and metabolic modulators, diuretics, masking agents, stimulants, anesthetics, cannabis, adrenal corticosteroids, and similar substances.  Exclusion Criteria:  Presence of an illness resembling symptoms of overtraining syndrome in the week before the start of the experiment. This includes primary viral illnesses, bacterial infections, associated inflammatory diseases, diabetes, or hyperthyroidism. Suspected symptoms of high-risk overtraining syndrome in the week preceding the experiment, such as persistent fatigue or exhaustion, unexplained significant decrease in athletic performance exceeding 10%. - HealthyVolunteers: Accepts Healthy Volunteers - Gender: All - MinimumAge: 18 Years - MaximumAge: 50 Years - StdAgeList: Adult