Peak anaerobic power in patients with COPD: gender related differences.

The aim of the study was to investigate peak anaerobic power during all-out exercise in patients with COPD. Twenty patients (ten women, ten men) [FEV1=50.5 (7.

[Decrease of dynamic muscle function in patients with COPD: preliminary study].

Background: The aim of the study was to investigate dynamic muscle function during all-out exercise in patients with chronic obstructive pulmonary disease (COPD) and to observe the relationship between body composition and skeletal muscle function.

Material And Methods: Eight patients (FEV1: 53.0 +/- 9.

[Pulmonary gas exchange during exercise in healthy subjects].

Introduction: The modifications of gas exchange on exercise reflect the consequences of the control and limits of adaptation of the respiratory apparatus to the mechanical loads imposed on the muscles and the oxygen requirements of the organism. In the majority of cases, even if the thoraco-pulmonary apparatus is perfectly adapted to the increase in these requirements, the balance between the metabolic demands of the tissues and the pulmonary supply appears difficult to satisfy beyond certain limits without hypoxaemia, particularly in those subjects with a low ventilatory response to exercise. Based on the populations reported in the literature the functional limits of the control of the thoraco-pulmonary system and the possible modifications of the structures of the lung are discussed for each of these mechanisms.

Effect of creatine supplementation on phosphocreatine resynthesis, inorganic phosphate accumulation and pH during intermittent maximal exercise.

In this study, we examined the effect of creatine ingestion on muscle power output, muscle phosphocreatine resynthesis, inorganic phosphate and pH during repeated brief bouts of maximal exercise. Nine healthy males performed maximal plantar flexion before and after creatine ingestion (20 g x day(-1) for 6 days). The experimental protocol consisted of five 8 s bouts (bouts 1-5) interspersed with 30 s recovery, followed by bouts 6 (8 s) and 7 (16 s) separated by 1 and 2 min, respectively.