Effects of Including 30-s Sprints During Low-intensity Cycling Exercises During a Training Camp on Performance and Muscle/Blood Characterisitcs
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 18
- 试验地点
- 1
- 主要终点
- Performance during a 5-minute all-out cycling test
研究概览
简要总结
To investigate the effects of Including 30-s sprints during low-intensity cycling exercises during a training camp on performance and muscle/blood characterisitcs in elite cyclists
详细描述
Inclusion of sprint intervals during low-intensity training (LIT) sessions has been suggested as a potential mean to improve endurance performance in elite cyclists, facilitated by muscular or systemic physiological adaptations. So far, the effects of such training has been studied exclusively in context of short-lasting low-intensity sessions, representing a scenario with suboptimal ecological validity for such highly trained athetes.
This study will investigate the effects of including sprints during prolonged LIT-sessions sessions during a 14-day training camp focusing on LIT, followed by 10 days recovery (REC), on performance and performance-related measures in elite cyclists. During the training camp, a sprint training group will conduct 12x30-s maximal sprints during five LIT sessions, whereas a control group will perform distance-matched LIT-only. Overall, the training camp will lead to substantial increases in training load compared to habitual training in both intervention groups, followed by subsequent reductions during REC. Performance tests will be conducted before the training camp (T0) and after REC (T2). Muscle biopsies, hematological measures and stress/recovery questionnaires will be collected Pre (T0) and after the camp (T1).
The study was pre-registered at Norwegian Center for Research Data (14/08/2017, Norwegian): http://pvo.nsd.no/prosjekt/55322
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •VO2max > 65ml/kg/min
排除标准
- •VO2max < 65ml/kg/min
- •Average endurance training per week >10hrs/wk during the four weeks leading up to the study
结局指标
主要结局
Performance during a 5-minute all-out cycling test
时间窗: Changes from before the intervention (T0) to immediately after the intervention (T2, after REC)
Mean power output measured during a 5-minute all-out cycling test performed at the end of a \~2 hour long exercise protocol
次要结局
- Plasma volume (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Sprint performance(Changes from before the intervention (T0) to immediately after the intervention (T2, after REC))
- Fractional utilization of VO2max (incremental test)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Fractional utilization of VO2max (5-min test)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Gross efficiency (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Maximal aerobic power output(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Haemoglobin mass (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Gross efficiency (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Power output at lactate threshold (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Haemoglobin mass (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Blood volume (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Plasma volume (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Maximal oxygen uptake(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Red blood cell volume (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Hematocrit (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Hematocrit (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Body mass (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Power output at lactate threshold (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Protein abundance in skeletal muscle(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Blood volume (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Mean corposcular volume (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Enzyme activity in skeletal muscle(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Fat mass (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Session rate of percieved exertion(Throughout the training camp (14 days))
- Red blood cell volume (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Body mass (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Lean body mass (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Lean body mass (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Mean corposcular volume (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Fat mass (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))
- Stress-recovery state (training camp)(Changes from before the intervention (T0) to immediately after the training camp (T1))
- Stress-recovery state (recovery/REC)(Changes from before the intervention (T0) to immediately after the intervention (T2, i.e. after REC))