Changes of cortisol values in young men with different levels of physical fitness during recovery after submaximal muscular load

Aim. The aim of the research was to study changes of blood cortisol values in response to muscular load and during post-load recovery in young men with different levels of physical fitness. Materials and Methods. Participants were divided into three groups: athletes developing speed-strength qualities (n = 18), athletes developing endurance (n = 18), and control group including apparently healthy men not engaged in sports (n = 16). 30-minute and 60-minute cycle ergometer tests (2W per kg of body weight) were used to model acute muscle effort. Serum cortisol values were assessed before tests (baseline values), immediately after load, and after an hour of recovery. Results. Cortisol values were significantly decreased (p