Training-induced changes in aerobic aptitudes of professional basketball players.

We investigated the effects of a training program on the aerobic aptitudes and the relevance of the instant of equality of pulmonary gas exchange (i. e., RER = 1.

Reproducibility of the instant of equality of pulmonary gas exchange and its physiological significance.

Aim: The goal of this work was to highlight the effectiveness of a new submaximal exercise index of aerobic endurance using a single incremental test: the time at which oxygen uptake and carbon dioxide output are equal, i.e., when the respiratory exchange ratio (RER)=1.

Branched-chain aminoacids and retraining of patients with chronic obstructive lung disease.

Background: The aim of this work was to improve the efficacy of rehabilitation by retraining, by oral supply in branched-chain aminoacids (BCAA). Patients with chronic respiratory insufficiency mainly suffer from obstructive bronchitis due to tobacco or asthma. Nutritional assessment is one of the components of respiratory rehabilitation, with retraining.

Study of blood flow parameters measured in femoral artery after exercise: correlation with maximum oxygen uptake.

To study the recovery periods of blood flow parameters in muscles after anaerobic exercise, instantaneous and mean blood flow velocity curves were recorded in the femoral artery in 22 sportsmen at rest and during the first 4 min of recovery after exercise (Ruffier-Dickson test). A flat ultrasonic probe connected to a Doppler system (Flow-Tester) was fixed on the skin at the level of the common femoral artery. From Doppler recordings, we calculated periods of recovery (return to baseline) of femoral blood flow velocity (FBFV RP), heart rate (HR RP) and femoral stroke distance (FSD RP).

[Assessment of physical and sports aptitudes, overtraining prevention, and prevention of doping].

Present levels of training loads--which can exceed thirty hours a week for high level sportsmen--expose to overwork then to overtraining syndrome and finally to temptation of doping. At the same time testing techniques improve, particularly exercise tests with a linearly increasing load, and the follow-up of training effects on physical fitness provides more accurate data. The specialized literature has developed the notions of cardiac frequency reserve and of oxygen intake reserve within the last ten years.