TITLE:
Blood Chemistry, Acid-Base, Electrolyte, Blood Lactate Metabolism and Sleep at 3480 m in Mountain Marathon Runners
AUTHORS:
Ivana Gritti, Clara Mauri, Stefano Defendi, Daniele Cesana, Federica Consonni, Alberto Dolci, Sabrina Luoni
KEYWORDS:
Clinical Investigation at High Altitude; Laboratory Investigation at High Altitude; Hematochemistry; Acid-Base Metabolism; Electrolyte Metabolism; Blood Lactate Metabolism; Hydration Status; Sleep Quality Indicators; EEG; Mountain Marathon Runners
JOURNAL NAME:
Journal of Behavioral and Brain Science,
Vol.3 No.1,
February
26,
2013
ABSTRACT: Altered blood chemistry, acid-base and electrolyte are suggested determinants of sleep disturbance, with frequent arousal at high altitude even in well and long-trained altitude marathon runners. In this sample of experienced altitude marathon runners with maximal aerobic power at sea level of 61.4 ± 2.7 ml/kg-1·min-1 we found that pO2 and percent of oxygen saturation (%SO2) were lower at2050 mand3480 mthan at sea level; pO2 was higher after 38 - 41 hours than after 30 - 31 hours of acclimatization at3480 m(P 2 decreased (P 2 and (P 2 at a sleeping altitude of3480 mwas lower (P Simple regression analysis disclosed a significant correlation between the changes in TST and the percent of REM sleep and the changes in %SpaO2 recorded during sleep (P 2 at higher altitude and the percent of W and of TST (P 2, tCO2 and [HCO3-] correlated negatively and significantly with the percent of REM sleep changes at high altitude (P 2 and pH and correlated negatively with the changes in %SO2, pCO2, tCO2, and [HCO3-] (P ++] and [BE] and negatively with the changes in buffered bases [BB] and [BEeffective] (P 2 and significantly and negatively with the changes in [K+] (P 2, tCO2, [HCO3-] and [K+] (P