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RISS 인기검색어
- 검색키워드
- 저자 : ( Morteza Khodaee ) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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Incidence of exercise-associated hyponatremia during a high-altitude 161-km ultramarathon
( Morteza Khodaee ),( Anahita Saeedi ),( Christine Harris-Spinks ),( Tamara Hew-Butler ) 한국운동영양학회 2021 Physical Activity and Nutrition (Phys Act Nutr) Vol.25 No.3
[Purpose] Exercise-associated hyponatremia (EAH) is a well-known condition among endurance athletes at low altitudes. The incidence of EAH during ultramarathons at high altitudes warrants further investigation. This prospective observational study was conducted on the participants of the Leadville Trail 100 run, a 161- km race held at a high altitude (2,800 m-3,840 m). [Methods] Venous blood samples were collected before and immediately after the race. The participants completed an electronic survey after the race. Our main outcome measure was the post-race serum sodium ([Na<sup>+</sup>]) level. [Results] Of the 672 athletes who started the race, 351 (52%) successfully completed the event within the 30- hour cut-off. Post-race blood samples were collected from 84 runners (66 finishers). Both pre- and post-race blood samples were collected from 37 participants. Twenty percent of the post-race participants had EAH. Only one post-race participant had a [Na<sup>+</sup>] level of <130 mmol/L. All participants with EAH were asymptomatic. One participant had an abnormal pre-race [Na<sup>+</sup>] level (134 mmol/L). Female participants had a significantly higher rate of EAH than male participants (40% vs. 16%; p=0.039). Age, body mass index, weight changes, race completion status, nonsteroidal anti-inflammatory drug use, and urine specific gravity were not associated with the development of EAH. Lower postrace [Na<sup>+</sup>] levels were associated with higher serum creatine kinase values (R<sup>2</sup>=0.1, p<0.005). [Conclusion] High altitude (3,840 m peak) does not appear to enhance the incidence of EAH after an ultramarathon footrace. This suggests that ambient temperature (low temperatures reduce risk), sex (female predilection), endurance running, and overhydration are more prominent risk factors for EAH than high altitude.
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