The 10/7 HIIT Shock Cycle Study: The Effects of a 7-Day High-Intensity-Interval Training Shock Microcycle on Endurance Performance, Well-Being, Stress and Recovery in Endurance Trained Athletes - Randomized Controlled Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 33
- 试验地点
- 1
- 主要终点
- Endurance performance I
研究概览
简要总结
A randomized, controlled trial to evaluate the effects of two versions of 10 high intensity interval trainings (HIIT) within a 7-day shock microcycle on endurance performance, well-being, health, stress and recovery in trained athletes.
详细描述
Thirty-six trained endurance athletes will be recruited and randomly assigned to either a "high volume (HIIT-HV)" group, a "low volume (HIIT-LV)" group, or a control group. All participants will be monitored before (9 days), during (7 days), and after (14 days) a 7-day training intervention, for 30 days. Participants in both intervention groups will complete 10 HIIT sessions within the period of 7 days, with an additional 30 minutes of low-intensity training exclusively in HIIT-HV. HIIT sessions consist of aerobic HIIT, i.e., 5x4min at 90-95% of maximal heart rate interspersed by 2.5 min active recovery periods. To determine the effects of the intervention, performance diagnostics, and a 5 kilometer time trial will be conducted before and after the intervention. In addition, participants are closely monitored for general health, stress, fatigue, recovery, neuromuscular performance, executive functions and sleep.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 45 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Female or male
- •aged 18-45 years
- •Proof of physical fitness (e.g. sports medical examination required) for measurements with higher intensities (e.g. endurance tests, competition simulation)
- •Competition experience at the national or international level in an endurance sport
- •VO2max ≥50ml/kg/min for females; ≥55 ml/kg/min for males or a 5-kilometer (km) time trial performance of ≤ 20:00 min (female), or ≤ 18:30 min (male)
排除标准
- •Systemic disease or other known pathology in the organs: heart, lungs, kidney, stomach, spleen, liver, gall bladder, and intestines.
- •Evidence of pulmonary disease: forced expiratory volume in one second/forced expiratory volume < 70% with/without symptoms (cough, sputum) or other evidence of pulmonologic disease.
- •Diabetes II.
- •Neurological or psychological disease of any kind.
- •Currently undergoing medical or psycho-therapeutic treatment.
- •Health condition that does not allow regular participation in the training forms (e.g. acute illnesses such as fever or other flu-like infections within the last 7 days before the start of the study), orthopedic diseases, injuries to the muscular, bone, joint or tendon apparatus within the last three months.
- •Alcohol or drug abuse.
- •Already high training volume with high intensity training (more than 2 weekly training sessions of high-intensity training)
研究组 & 干预措施
HIIT-HV
HIIT-HV - high intensity interval training high volume
Participants complete a total of 10 HIIT sessions over a 7-day period consisting of 5 x 4-minute intervals at an intensity of 90-95% of their individual maximum heart rate (HRmax), interspersed with a 2.5-minute active recovery period. Each training session is followed by 30 minutes of low-intensity training (total of 300 minutes of additional low-intensity training during this period).
干预措施: Exercise (Other)
HIIT-LV
HIIT- LV - high intensity interval training low volume
Participants complete a total of 10 HIIT sessions over a 7-day period consisting of 5 x 4-minute intervals at an intensity of 90-95% of their individual maximum heart rate (HRmax), interspersed with a 2.5-minute active recovery period.
干预措施: Exercise (Other)
Control group
Participants continue with their regular training program.
结局指标
主要结局
Endurance performance I
时间窗: 10 to 21 days (assessment is conducted once before the intervention and repeated three times afterwards, i.e. 3, 7 and 14 days after the completion of the intervention)
Change of maximal oxygen uptake (VO2max in ml/min/kg) compared to baseline and group
Endurance performance III
时间窗: 20 to 22 days (the assessment is conducted once before, and once after the intervention)
Change of 5 kilometer time trial performance (in sec) compared to baseline and group
Endurance performance IV
时间窗: 10 to 21 days (assessment is conducted once before the intervention and repeated three times afterwards, i.e. 3, 7 and 14 days after the completion of the intervention)
Change of lactate threshold (in km/h) compared to baseline and group
Endurance performance II
时间窗: 10 to 21 days (assessment is conducted once before the intervention and repeated three times afterwards, i.e. 3, 7 and 14 days after the completion of the intervention)
Change of peak performance (Ppeak in Watt) compared to baseline and group
Endurance performance V
时间窗: 10 to 21 days (assessment is conducted once before the intervention and repeated three times afterwards, i.e. 3, 7 and 14 days after the completion of the intervention)
Change of ventilatory thresholds (in km/h) compared to baseline and group
Endurance performance VI
时间窗: 10 to 21 days (assessment is conducted once before the intervention and repeated three times afterwards, i.e. 3, 7 and 14 days after the completion of the intervention)
Change of running economy (in ml/min/kg) compared to baseline and group
次要结局
- Change of questionnaire scores - well-being(30 days (questionnaires will be given to participants several times before, during, and after the intervention.))
- Change of forced expiratory volume(10 to 21 days (assessment is conducted once before the intervention and repeated three times afterwards, i.e. 3, 7 and 14 days after the completion of the intervention))
- Change of executive functions - 2 back task(30 days (executive functions are tested several times before, during, and after the intervention))
- Adherence to training program(7 days)
- Change of questionnaire scores - rate of fatigue(30 days (questionnaires will be given to participants several times before, during, and after the intervention.))
- Change of questionnaire scores - sleep quality(30 days (questionnaires will be given to participants several times before, during, and after the intervention.))
- Change of urea(30 days (blood is drawn from participants several times before, during, and after the intervention.))
- Change of miRNA(30 days (blood is drawn from participants several times before, during, and after the intervention.))
- Change of sleep quality I - GPS watch(30 days (sleep is assessed several times before, during, and after the intervention))
- Change of questionnaire scores - vitality(30 days (questionnaires will be given to participants several times before, during, and after the intervention.))
- Change of blood count(30 days (blood is drawn from participants several times before, during, and after the intervention.))
- Change of cell-free DNA(30 days (blood is drawn from participants several times before, during, and after the intervention.))
- Change of fat free mass(10 to 21 days (assessment is conducted once before the intervention and repeated three times afterwards, i.e. 3, 7 and 14 days after the completion of the intervention))
- Change of power output during exercise(7 days)
- Change of sleep quality II - ABIOS App(30 days (sleep is assessed several times before, during, and after the intervention))
- Change of blood lactate(30 days (blood is drawn from participants several times before, during, and after the intervention.))
- Change of neuromuscular performance(30 days (neuromuscular performance is assessed several times before, during, and after the intervention))
- Change of body weight(10 to 21 days (assessment is conducted once before the intervention and repeated three times afterwards, i.e. 3, 7 and 14 days after the completion of the intervention))
- Change of parameters recorded by an electrocardiogram - mean heart rate(30 days (an electrocardiogram is written several times before, during, and after the intervention))
- Change of parameters recorded by an electrocardiogram - heart rate variability(30 days (an electrocardiogram is written several times before, during, and after the intervention))
- Cardiac ultrasound(1 day (this outcome will be determined once before study start))
- Change of questionnaire scores - muscular fatigue(30 days (questionnaires will be given to participants several times before, during, and after the intervention.))
- Change of creatine kinase(30 days (blood is drawn from participants several times before, during, and after the intervention.))
- Change of cytokines(30 days (blood is drawn from participants several times before, during, and after the intervention.))
- Change of fat mass(10 to 21 days (assessment is conducted once before the intervention and repeated three times afterwards, i.e. 3, 7 and 14 days after the completion of the intervention))
- Correlations between sleep quality devices(30 days)
- Change of executive functions - Eriksen flanker task(30 days (executive functions are tested several times before, during, and after the intervention))
研究者
Nils Haller, PhD
Senior Researcher
University of Salzburg