Plasma glutamine concentrations differ between elite soccer players according to training status

Abstract

[Extract] The high volume and intensity of training required for success in sports such as professional soccer may lead to suppression of the immune system, potentially causing higher instances of illnesses such as upper respiratory tract infections (URTI) (Heath et al. 1991). Plasma glutamine concentration has been implicated as a potential marker of immunosupression in athletes and limited evidence suggests concentrations might fluctuate according to training status (Keast et al. 1995). The aim of this study was to examine whether plasma glutamine concentrations could differentiate between professional soccer players according to their current levels of activity.