Influence of dehydration on training performance

Variables	Dehydration
Physiological function
Cardiovascular
Blood volume/plasma volume	Decreased
Cardiac output	Decreased
Stroke volume	Decreased
Heart rate	Increased
Metabolic
Aerobic capacity(VO2max)	No change or decreased
Anaerobic power(Wingate test)	No change or decreased
Anaerobic capacity(Wingate test)	No change or decreased
Blood lactate, peak value	Decreased
Buffer capacity of the blood	Decreased
Lactate threshold, velocity	Decreased
Muscle and liver glycogen	Decreased
Blood glucose during exercise	Possibly decreased
Protein degradation with exercise	Possibly increased
Thermoregulation and fluid balance
Electrolytes, muscle and blood	Decreased
Exercise core temperature	Increased
Sweat rate	Decreased, delayed onset
Skin blood flow	Decreased
Performance
Muscular strength	No change or decreased
Muscular endurance	No change or decreased
Muscular power	Unknown
Speed of movement	Unknown
Run time to exhaustion	Decreased
Total work performed	Decreased
Wrestling simulation test	Decreased