three alternate days weekly along 4 weeks.

three alternate days weekly along 4 weeks.

Muscular biopsy was obtained from vastus lateralis of the quadricipitalis muscle. The dermis was cut for to display muscular aponeurosis (<2.5 cm) after clean and sterilize the biopsy zone. Next the aponeurosis was cut and a puncture with Vacora® device (Bard Biopsy Systems, Tempe, AZ, USA) was realized. The injury was cleaned and sutured, and the muscular sample was stored at -80ºC until FA analyses..FA composition of skeletal muscle were determined by gas chromatography.

Venous blood samples were obtained from the antecubital vein of participants with vacutainers containing EDTA (ethylenediaminetetraacetic acid) as anticoagulant (6 mL) to purify erythrocytes following an adaptation of the method described elsewhere (Boyum, 1964; Sureda et al., 2006). Erythrocyte fraction was obtained after centrifugation (900 x g, 30 min, 4ºC). Then, erythrocytes were cleaned with phosphate buffered saline (PBS), centrifuged (900 x g, 20 min, 4ºC) and lysed with water at initial blood volume. Cell lysates were stored at -80ºC until FA analyses. FA composition of erythrocytes were determined by gas chromatography.

Densitometry was performed by Lunar IDXA (General Electric, USA)

Standardized maximal treadmill exercise test