Effects of Lactate Threshold Training and Pyramidal-to-Polarized Endurance Training on 5-km Running Performance, Physiological Capacity, and Post-exercise Neural Responses in Recreational Runners: A Randomized Controlled Trial
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 发起方
- 入组人数
- 60
- 主要终点
- Change in 5-km Running Performance
研究概览
简要总结
This study will examine the effects of two 8-week endurance training programs on 5-km running performance in recreational runners. Participants will be randomly assigned to a lactate threshold training group, a pyramidal-to-polarized endurance training group, or a control group that maintains usual physical activity without receiving the study training program.
Before and after the intervention, participants will complete assessments of 5-km running performance, aerobic fitness, lactate threshold, running economy, blood lactate responses, and brain activity recorded before and after maximal exercise. The study will compare changes among the three groups and examine whether physiological and post-exercise neural responses are associated with improvements in running performance.
The main purpose is to determine whether the two training programs produce different improvements in 5-km running performance and to better understand the physiological and neural adaptations associated with endurance training in recreational runners.
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
- Double (Participant, Outcomes Assessor)
盲法说明
Participants will be informed of their assigned training schedule but will not be informed of the formal training model, study arm label, or the investigators' hypotheses regarding the comparative effectiveness of the interventions. Outcome assessors will remain blinded to group allocation. Because the exercise content may differ between groups, complete concealment of allocation cannot be guaranteed.
入排标准
- 年龄范围
- 18 Years 至 25 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Men and women aged [18-30] years.
- •Recreational runners with regular running or endurance-training experience for at least [6 months].
- •Currently completing running training at least [2-3 times per week].
- •Able to complete a continuous 5-km run.
- •Willing and able to complete the 8-week training intervention and all study assessments.
- •Able to understand the study procedures and provide written informed consent.
排除标准
- •Current cardiovascular, respiratory, metabolic, neurological, or other medical conditions that may contraindicate maximal exercise or endurance training.
- •Current musculoskeletal injury or pain that limits running or participation in maximal exercise testing.
- •History of loss of consciousness, epilepsy, severe head injury, or other neurological conditions that may affect electroencephalographic recordings.
- •Use of medications or substances known to substantially affect cardiovascular, metabolic, or central nervous system responses to exercise.
- •Participation in another structured exercise intervention or clinical study during the study period.
- •Inability or unwillingness to comply with the assigned training program, testing procedures, or study requirements.
- •Any other condition judged by the investigators to make participation unsafe or to substantially affect the validity of the study outcomes.
研究组 & 干预措施
Lactate Threshold Training Group
Participants assigned to this group will complete an 8-week endurance training program primarily prescribed around their individually determined lactate threshold intensity. Training intensity will be individualized using baseline physiological testing and adjusted according to the study protocol. Participants will complete the prescribed training sessions throughout the intervention period and will undergo the same pre- and post-intervention assessments as the other study groups.
干预措施: Lactate Threshold Training (Behavioral)
Pyramidal-to-Polarized Endurance Training Group
Participants assigned to this group will complete an 8-week periodized endurance training program in which the training-intensity distribution progresses from a pyramidal pattern during the initial phase to a polarized pattern during the later phase. Exercise intensity will be individualized using baseline physiological testing and adjusted according to the study protocol. Participants will undergo the same pre- and post-intervention assessments as the other study groups.
干预措施: Pyramidal-to-Polarized Endurance Training (Behavioral)
Usual Activity Control Group
Participants assigned to this group will continue their usual physical activity and running habits during the 8-week study period and will not receive either of the structured training programs administered by the research team. Participants will be asked not to begin any new structured endurance training program during the intervention period and will undergo the same pre- and post-intervention assessments as the training groups.
结局指标
主要结局
Change in 5-km Running Performance
时间窗: Baseline and immediately after the 8-week intervention
5-km running performance will be assessed using a maximal-effort self-paced 5-km run conducted on a standard 400-m outdoor athletics track. Completion time will be recorded in seconds. The primary outcome will be the change in 5-km completion time from baseline to the end of the 8-week intervention. A lower completion time indicates better running performance.
次要结局
- Change in Maximal Oxygen Uptake(Baseline and immediately after the 8-week intervention)
- Change in Lactate Threshold(Baseline and immediately after the 8-week intervention)
- Change in Running Economy(Baseline and immediately after the 8-week intervention)
- Change in Post-exercise Blood Lactate Concentration(Baseline and immediately after the 8-week intervention, with measurements before exercise and at 5 and 20 minutes after exercise)
- Change in Post-exercise Electroencephalographic Activity(Baseline and immediately after the 8-week intervention, with electroencephalographic recordings before exercise and at 5 and 20 minutes after exercise)
研究者
Shuqi Jia
Doctoral Student
Shanghai University of Sport