Prefrontal Cortex Hemodynamics and Working Memory After Exhaustive Aquatic Exercise in Endurance Athletes and Physically Active Controls: an fNIRS Study
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 22
- 试验地点
- 1
- 主要终点
- Prefrontal Oxygenated Hemoglobin (HbO) During the 2-Back Task
研究概览
简要总结
This study compared prefrontal cortex hemodynamics and working memory performance following exhaustive aquatic exercise between endurance athletes and physically active individuals. Twenty-two healthy male participants aged 18-30 years, including 10 endurance athletes and 12 physically active controls, completed an incremental stepping exercise to exhaustion during head-out water immersion. The exercise was performed on a 20-cm step at xiphoid-level water depth, with cadence beginning at 18 steps/min and increasing by 2 steps/min every 30 seconds. Approximately 5 minutes after exercise, participants completed a seated 2-back working memory task while prefrontal cortex hemodynamic responses were assessed using functional near-infrared spectroscopy (fNIRS). Cognitive performance and prefrontal hemodynamic responses were compared between the two groups.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non 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 30 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Healthy males aged 18-30 years.
- •Endurance athletes or physically active individuals according to the study's predefined group criteria.
- •Able to perform the aquatic stepping exercise protocol and complete the 2-back working memory task.
- •Provided written informed consent to participate.
排除标准
- •Presence of cardiovascular, pulmonary, neurological, metabolic, musculoskeletal, or psychiatric conditions that could affect exercise performance or cognitive assessment.
- •Use of medications or substances that could influence cognitive function, cardiovascular responses, or exercise tolerance.
- •Inability to safely perform the aquatic exercise protocol or complete the study procedures.
研究组 & 干预措施
Endurance Athletes
Endurance athletes completed an incremental exhaustive aquatic stepping exercise protocol, followed approximately 5 minutes later by a seated 2-back working memory task with prefrontal fNIRS assessment.
干预措施: Incremental Exhaustive Aquatic Stepping Exercise (Other)
Physically Active Controls
Physically active controls completed the same incremental exhaustive aquatic stepping exercise protocol, followed approximately 5 minutes later by a seated 2-back working memory task with prefrontal fNIRS assessment.
干预措施: Incremental Exhaustive Aquatic Stepping Exercise (Other)
结局指标
主要结局
Prefrontal Oxygenated Hemoglobin (HbO) During the 2-Back Task
时间窗: During the 2-back task beginning 5 minutes after exercise cessation
Whole-prefrontal oxygenated hemoglobin (HbO) was assessed using functional near-infrared spectroscopy (fNIRS) during the post-exercise 2-back task. HbO represents a baseline-referenced relative concentration change referenced to the 30-s post-exercise pre-task resting baseline and averaged across the five 2-back blocks.
Prefrontal Deoxygenated Hemoglobin (HbR) During the 2-Back Task
时间窗: During the 2-back task beginning 5 minutes after exercise cessation
Whole-prefrontal deoxygenated hemoglobin (HbR) was assessed using functional near-infrared spectroscopy (fNIRS) during the post-exercise 2-back task. HbR represents a baseline-referenced relative concentration change referenced to the 30-s post-exercise pre-task resting baseline and averaged across the five 2-back blocks.
Correct Responses During the 2-Back Task
时间窗: During the 2-back task beginning 5 minutes after exercise cessation
Number of correct responses (hits) to target trials during the 2-back working memory task, pooled across five blocks.
Incorrect Responses During the 2-Back Task
时间窗: During the 2-back task beginning 5 minutes after exercise cessation
Number of incorrect responses (false alarms) to non-target trials during the 2-back working memory task, pooled across five blocks.
Reaction Time for Correct Responses During the 2-Back Task
时间窗: During the 2-back task beginning 5 minutes after exercise cessation
Reaction time, in seconds, for correct responses (hits) during the 2-back working memory task, pooled across five blocks.
次要结局
- Prefrontal Total Hemoglobin (HbT) During the 2-Back Task(During the 2-back task beginning 5 minutes after exercise cessation)