Chinese Journal of Clinical Rehabilitation
Volume 8, Issue 24, 2004, Pages 4984-4985

Effect of liquid oxygen on physical work efficiency of young immigrants at high altitude (Article)

Wang W.* , Wang Y.-H. , Zhang X.-Z. , Cui J.-H. , Ma Y. , Zhang F. , Ha Z.-D. , Xing G.-X.
  • a Institute of Altitude Disease, The 18 Hospital of Chinese PLA, Yecheng 844900 Sinkiang Uigur, China
  • b Institute of Altitude Disease, The 18 Hospital of Chinese PLA, Yecheng 844900 Sinkiang Uigur, China
  • c Institute of Altitude Disease, The 18 Hospital of Chinese PLA, Yecheng 844900 Sinkiang Uigur, China
  • d Institute of Altitude Disease, The 18 Hospital of Chinese PLA, Yecheng 844900 Sinkiang Uigur, China
  • e Institute of Altitude Disease, The 18 Hospital of Chinese PLA, Yecheng 844900 Sinkiang Uigur, China
  • f Institute of Altitude Disease, The 18 Hospital of Chinese PLA, Yecheng 844900 Sinkiang Uigur, China
  • g Institute of Altitude Disease, The 18 Hospital of Chinese PLA, Yecheng 844900 Sinkiang Uigur, China
  • h Institute of Altitude Disease, The 18 Hospital of Chinese PLA, Yecheng 844900 Sinkiang Uigur, China

Abstract

Aim: To explore the effect of inhaling liquid oxygen on physical work efficiency (PWC170) of young immigrants at high altitude with the heart rate of 170 beats per minute after exercise. Methods: Forty healthy young immigrants at 3 700 m altitude for 6 months were randomized into two groups: control group and experiment group, with 20 in each. The subjects in the control group constantly pedaled the EGM efficiency bicycle. The initial power was 25 W, and increased 50 W every 3 minutes to exhaustion at 60 r per minute. The subjects in the experiment group inhaled liquid oxygen, using face guard, with the intape of 4 L per minute for 10 minutes before exercise, and they inhaled liquid oxygen during the whole exercise, with the same way of pedaling as the control group. PWC170 of the examinees as their heart rate reached 170 beats per minute was measured by linear regression method. Results: PWC170 of the experiment group was (234.40 ± 25.82) W, and (212.10 ± 21.90) W in the control group, which indicated significant difference (t = 24.581, P < 0.01). Conclusion: Inhaling liquid oxygen significantly improves work-efficiency of young immigrants at high altitude.

Author Keywords

[No Keywords available]

Index Keywords

Altitude immigrant controlled clinical trial Heart Rate clinical trial exercise oxygen breathing oxygen therapy oxygen human controlled study randomized controlled trial bicycle manual labor linear regression analysis Article adult human experiment normal human exhaustion work capacity
Link
https://www.scopus.com/inward/record.uri?eid=2-s2.0-5044246307&partnerID=40&md5=61aade62159fca095c5dd95475337269
ISSN: 16715926
Cited by: 1
Original Language: Chinese