Effect of High Altitude Exposure, Acclimatization and Re-exposure on Psychomotor Performance and Sleep Quality in Lowlanders
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
- 2
- 主要终点
- Sustained attention measured by a visual pychomotor vigilance test (PVT)
研究概览
简要总结
Prospective interventional trial in lowlanders evaluating the effect of acute exposure, acclimatization and re-exposure to high altitude on psychomotor vigilance to measure sustained attention.
详细描述
Baseline measurements will be performed in Santiago de Chile, 520 m, over the course of 3 days. Participants will then travel by commercial airline (2 h flight) and by bus (2 h ride) to the ALMA base camp located at 2900 m near San Pedro de Atacama, northern Chile. Participants will stay there for the next 7 nights and they will spend the days (6 total; 6-8 h daily) at the telescope station at 5050 m while undergoing testing as described above at the first and the last day at 5050m. Daily transports from 2900 to 5050 m will be by car (1 h ride, one way). After the first 7 day altitude sojourn participants will return to the Santiago area (520 m) for a 7 day recovery period. A second altitude sojourn with an identical schedule as the one described above and a final low altitude stay of 3 days will follow.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 40 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •born, raised and currently living <1300m
- •No overnight stays at altitudes >1500m 4 weeks before the study
排除标准
- •previous altitude intolerance <3000m
- •pregnancy
- •health impairment, which requires regular treatment
研究组 & 干预措施
Altitude exposure
Acute high altitude exposure followed by 8 day acclimatization and re-exposure for 8 days after 6 days at low altitude.
干预措施: altitude exposure (Other)
结局指标
主要结局
Sustained attention measured by a visual pychomotor vigilance test (PVT)
时间窗: Low altitude dojourn at 520m; forst sojourn at 5050m Day 2, 7; second sojourn at 5050m Day 2, 7
Change in psychomotor response speed across two cycles of altitude exposure, comparing 5050m to 520m.
次要结局
- Indices of sleep quality measured by actigraphy (total sleep time, sleep efficiency, sleep latency(Low altitude dojourn at 520m; forst sojourn at 5050m Day 2, 7; second sojourn at 5050m Day 2, 7)
研究者
Marc Poulin
Professor
University of Calgary