Nitric oxide response in exhaled air during an incremental exhaustive exercise.

This study examines the response of the exhaled nitric oxide (NO) concentration (CNO) and the exhaled NO output (VNO) during incremental exercise and during recovery in six sedentary women, seven sedentary men, and eight trained men. The protocol consisted of increasing the exercise intensity by 30 W every 3 min until exhaustion, followed by 5 min of recovery. Minute ventilation (VE), oxygen consumption (VO2), carbon dioxide production, heart rate, CNO, and VNO were measured continuously.

Hormonal and metabolic changes during a strenuous tennis match. Effect of ageing.

The effect of a strenuous tennis match was studied in 9 young (21.2 +/- 1.9 yr) and 10 veteran women players (46.

Effects of age on heart rate response during a strenuous match of tennis.

Ten young women tennis players (YP: 15-30 years) and 10 veteran women tennis players (VP: 40-51 years) of equivalent skill took part in this study. In the laboratory, maximal heart rate (maxHR), VO2max and blood lactate concentration (LA) at exhaustion were measured. On the field, each match was carried out as an official competition.