Browsing by Subject "Tolerancia al ejercicio"

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    La fotobiomodulación puede aumentar la tolerancia al ejercicio y la activación de los músculos del antebrazo en hombres sanos: un estudio cruzado, aleatorizado y controlado con placebo
    (Universidad de Murcia: servicio de publicaciones, 2025) Zago, Julio; Santos, Francisco Valdez; Vieira, Paulo, J.C; Rondinel, Tatiana; Diefenthaeler, Fernando; Machado, Sergio; Aprigliano, Vicente; Silva, Weder Alves; Inacio, Pedro Augusto; Sá Filho, Alberto; Chiappa, Gaspar R.; Sin departamento asociado
    Despite the positive effects of photobiomodulation (PBM) on muscle behavior, its effects on exercise tolerance and reactive hyperemia (RH) are poorly understood. Objective: assess the acute effects of PBM with 904 and 660, nm wavelengths irradiated at the forearm flexor muscles on exercise tolerance through the analysis of RH and muscle activation. This preliminary, double-blind, placebo-controlled crossover trial was performed with 11 healthy participants. We randomly applied PBM 904nm, PBM 660nm, and placebo at six different points at the dominant flexor muscle area. The placebo group received the stimulation at the same points with a turned-off device. RH was assessed by measuring forearm blood flow which was calculated using the peak blood flow after the 5-min occlusion with the technique of venous occlusion plethysmography. Electromyography was assessed through surface electrodes on three flexor forearm muscles. The root mean square (RMS) and median frequency (MDF) were plotted at 25, 50, 75, and 100% of the limit of tolerance (Tlim). PBM 660 irradiation significantly increased RH when compared to PBM 904 and placebo. Furthermore, PBM 660 and 904 increased RMS and reduced MDF when compared to placebo. PBM 660 irradiation was superior to 904 and placebo in the increase of RH but the application of both irradiations was similar in the activation of forearm muscles in healthy men. Trial registration: www.ensaiosclinicos.gov.br RBR-7yspdx