Alternations of heart rate variability at lower altitude in the predication of trekkers with acute mountain sickness at high altitude

Hsien Hao Huang, Chia Ying Tseng, Ju Sing Fan, David Hung Tsang Yen, Wei Fong Kao, Shi Chuan Chang, Terry B J Kuo, Chun I. Huang, Chen Hsen Lee

研究成果: 雜誌貢獻文章同行評審

26 引文 斯高帕斯(Scopus)

摘要

Objective: To determine the change and relationship of spectral components of heart rate variability (HRV) measurements in subjects with or without acute mountain sickness (AMS) at both low and high altitude. DESIGN: A prospective study. SETTING: A 12-day itinerary by trekking to the Namche Bazaar, 3440 m in Nepal. PARTICIPANTS: A total of 32 subjects were recruited. INTERVENTIONS: The alternations were measured by heart rate (HR), arterial oxygen saturation (SpO2), and spectral analysis of HRV at sea level, 1317 m, 3440 m, 1317 m, and sea level, respectively. MAIN OUTCOME MEASURES: Spectral analysis of HRV. RESULTS: There were statistically significant increases in HR and decreases in SpO2 in all subjects at high altitude. In HRV, the values of R-R interval, total variance, high frequency (HF), low frequency (LF), and HF% were significantly lower at 3440 m than at sea level, respectively (P <0.05). The subjects with AMS had significantly lower total variance, HF, and HF%, respectively, but higher LF:HF ratio (P <0.05) at 3440 m. Subjects with both HF% <20% (nu) and LF:HF ratio > 1.3 measured at 1317 m had odds ratios of 7.00 (95% confidence interval, 1.11 to 44.06; P = 0.047) to get AMS at 3440 m. CONCLUSIONS: The HRV measurements in total variances, HF, and HF% in trekkers with AMS were statistically significantly lower at high altitude. HF% <20% (nu) or LF:HF ratio > 1.3 at lower altitudes could be an important predication parameter of trekkers with AMS at higher altitudes.
原文英語
頁(從 - 到)58-63
頁數6
期刊Clinical Journal of Sport Medicine
20
發行號1
DOIs
出版狀態已發佈 - 一月 2010
對外發佈Yes

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

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