Browsing by Author "Barramuno, Mauricio"

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    Effects of Intra-Set Rest on Morphological Variables, Maximal Strength and Jump Performance in University Students
    (2021) Aravena-Sagardia, Pablo; Garcia-Sandoval, Alan; Barramuno, Mauricio; Herrera-Valenzuela, Tomas; Magnani Branco, Braulio Henrique; Guzman-Munoz, Eduardo; Lopez-Fuenzalida, Antonio; Cerda Vega, Enrique; Valdes-Badilla, Pablo
    The appropriate dosage of resistance training could promote physical and physiological adaptations and decrease injuries. The aim of the study was to analyze the effects of the different intra-set rest after eight weeks of resistance training on morphological variables, maximal strength, and jump performance in physically active university students. Twenty-five students (15 men and 10 women) were randomized by sex and distributed in Control Group (CG) (n=8) with rest only at the end of the series; Experimental Group 1 (EG1) (n=9) with an intra-set rest of 30 s, and Experimental Group 2 (EG2) (n=8) with four infra-set rest of 10 s. Morphological variables [body weight, bipedal height, body mass index (BMI), fat mass and muscle mass], maximum upper body strength (bench press and military press), lower body strength [parallel squat (45 degrees) and deadlift], as well as countermovement jump (CMJ) were measured. All three groups obtained a significant increase (p<0.01) in body weight and BM1, as well as an essential reduction (p<0.01) of fat mass. Muscle mass increased significantly (p<0.01) for both CG and EG1. Maximum upper- and lower-body strength increased considerably (p<0.05) across all three groups and for all exercises, while the CMJ notably increased for CG and EG1. There are no significant changes between the different intra-set rest, when using the same volume, intensity, and total recovery time during the exercise series (p>0.05); thereby, there is an equivalent increase in muscle mass, maximal strength, jump performance, and a fat mass reduction.
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    Influence of violent contexts on facial reactions elicited by angry and neutral faces
    (2020) Aldunate, Nerea; Lopez, Vladimir; Barramuno, Mauricio; Galvez-Garcia, German
    This study focuses on determining whether violent contexts influence the perception of aggressiveness in faces analysing spontaneouscorrugator superciliiactivity. Participants viewed pictures of neutral and angry faces preceded by a contextual sentence describing either violent or neutral actions. They were instructed to judge each face according to whether it was aggressive or non-aggressive. Results show a higher level of perceived aggressiveness for neutral faces preceded by violent contexts, accompanied by longer reaction times, and a significant increase of corrugator activity. Angry faces preceded by neutral contexts were judged as less aggressive and elicited less corrugator activity. In conclusion, our results provide evidence that facial reactions and aggressiveness judgment for faces are context-dependent. With this work, we contribute to the view that contextual cues guide the face's emotional meaning, under top-down processing.