Human performance optimization of tactical personnel requires accurate, meticulous, and
effective monitoring of biological adaptations and systemic recovery. Due to an increased …

Breathing techniques are part of traditional relaxation methods; however, their influence on
psychophysiological variables related to sleep is still unclear. Consequently, the aim of this …

The aims of the current study were to examine the relationships between heart rate
variability (HRV), salivary cortisol, sleep duration and training in young athletes. Eight …

Sport-related concussions (SRC) are characterized by impaired autonomic control. Heart
rate variability (HRV) offers easily obtainable diagnostic approaches to SRC-associated …

Background: Heart rate (HR) and heart rate variability (HRV) measurements are widely used
to monitor stress and recovery status in sedentary people and athletes. However, effective …

Regular physical activity is important for cardiovascular health. However, high-volume
endurance exercise has been associated with increased number of electrocardiogram …

This study investigated the effects of a brief hypnosis including relaxation suggestions on
physiological markers of relaxation, cardiac vagal activity, and breathing frequency. Forty …

Sleep is an essential and strictly regulated process that is vital for health and well-being.
Shift work forcefully disrupts the natural rest-activity behavior of the body, such that physical …

The goal of endurance training is to enhance endurance capacity. The enhancements in this
capacity are based on the adaptations in the oxygen delivery system and neuromuscular …

Effects of sleep on endurance cycling performance and heart rate indices of athlete readiness
Page 1 Effects of sleep on endurance cycling performance and heart rate indices of athlete …