Influences on glycocalyx shedding during the Yukon Arctic Ultra: the longest and the coldest ultramarathon

Abstract

This is the first study to investigate changes in glycocalyx elements in an endurance footrace and first study to investigate exercise-induced shedding in both sexes. This study comprised of an athlete group who finished the ultra-long distance of up to 690 km during the Yukon Arctic Ultra as well as a control group. Results indicate relevant and different shedding of glycocalyx elements heparan sulfate, hyaluronan, and syndecan CD-138. Sex, age, BMI, and covered distance appear to have an influence on the shedding. Other serum parameters indicative of stress appear to be associated with shedding.

Adiponectin, leptin, cortisol, neuropeptide Y and profile of mood states in athletes participating in an ultramarathon during winter: An observational study

“…This study is part of continuing research since 2013: “Physiological changes of participants of the Yukon Arctic Ultra - an ultramarathon in an extremely cold climate”. In our previous analyses, we evaluated (1) the metabolic responses of participants in the YAU ( Coker et al, 2017 ), (2) the influence of energy balance on fat-free mass ( Schalt et al, 2018 ), (3) cardiac autonomic modulations in conjunction with psychological correlates ( Rundfeldt et al, 2018 ), and influences on glycocalyx shedding during ultra-endurance exercise ( Steinach et al, 2022 ). In 2019, we continued our investigation of athletes participating in the 690-km race.…”