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The influence of core affect on cyclo-ergometer endurance performance:Effects on performance outcomes and perceived exertion

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Journal of Sport and Health Science 2020年第6期9卷 578-586页

作者： Selenia di Fronso Antonio Aquino Réka Zsanett Bondár Cristina Montesano Claudio Robazza Maurizio Bertollo Department of Medicine and Aging Sciences Behavioral Imaging and Neural Dynamics(BIND)CenterUniversity“G.d’Annunzio”of Chieti-PescaraChieti 66100Italy Department of Neuroscience Imaging and Clinical SciencesUniversity“G.d’Annunzio”of Chieti-PescaraChieti 66100Italy

Background:Core affect is defined as the most general affective construct consciously accessible that is experienced *** can be experienced as free-floating(mood)or related to prototypical emotional *** aim of this study was to examine the influence of pleasant and unpleasant core affect on cyclo-ergometer endurance ***,we considered the influence of pleasant and unpleasant core affect on performance outcomes(i.e.,time to task completion)and rate of perceived exertion(RPE;Borg Scale,category ratio-10)collected during the ***:Thirty-one participants aged 20-28 years were *** affect was randomly elicited by 2 sets of pleasant and unpleasant pictures chosen from the international affective picture *** were displayed to participants during a cyclo-ergometer performance in 2 days in a counterbalanced *** was collected every minute to detect volunteers’***:The study sample was split into 2 *** 1 comprised participants who performed better with pleasant core affect,whereas Group 2 included participants who performed better with unpleasant core *** between-within subjects analysis of variance revealed a significant 2(group)×2(condition)×5(isotime)interaction(p=0.002,ηp^2=0.158).Post hoc comparisons showed that participants who obtained better performance with pleasant core affect(pleasant pictures;Group 1)reported lower RPE values at 75%of time to exhaustion in a pleasant core affect condition compared to an unpleasant core affect *** the other hand,participants who obtained better performance with unpleasant core affect(unpleasant pictures;Group 2)reported lower RPE values at 75%and 100%of time to exhaustion in an unpleasant core affect ***:Findings suggest differential effects of pleasant and unpleasant core affect on ***,core affect was found to influence perceived exertion and performance according to participants’pref

关键词： Arousal Hedonic tone Pleasant and unpleasant core affect rate of perceived exertion Time-to-exhaustion test

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Effects of compression garments on surface EMG and physiological responses during and after distance running

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Journal of Sport and Health Science 2020年第6期9卷 685-691页

作者： Wei-Chun Hsu Li-Wen Tseng Fu-Chun Chen Li-Chu Wang Wen-Wen Yang Yi-Jia Lin Chiang Liu Graduate Institute of Biomedical Engineering National Taiwan University of Science and TechnologyTaipeiTaiwan 10607China National Defense Medical Center TaipeiTaiwan 11466China Graduate Institute of Sports Equipment Technology University of TaipeiTaipeiTaiwan 11153China Taiwan Textile Research Institute New Taipei CityTaiwan 23674China

Background:The few previous studies that focused on the effects of compression garments(CG)on distance running performance have simultaneously measured electromyogram,physiological,and perceptual ***,this study investigated the effects of CG on muscle activation and median frequency during and after distance running,as well as blood-lactate concentration and rating of perceived exertion(RPE)during distance ***:Eight healthy male recreational runners were recruited to randomly perform two 40 min treadmill running trials,one with CG,and the other with control garment made of normal *** RPE and the surface electromyography(EMG)of 5 lower extremity muscles including gluteus maximus(GM),rectus femoris(RF),semitendinosus(ST),tibialis anterior(TA),and gastrocnemius(GAS)were measured during the running *** blood-lactate levels before and after the running trial were ***:Wearing CG led to significant lower muscle activation(p0.05).Conclusion:Wearing CG was associated with significantly lower muscle activation and higher median frequency in the running-related key muscles during distance *** finding suggested that wearing CG may improve muscle function,which might enhance running performance and prevent muscle fatigue.

关键词： Blood lactate Compression garment Fatigue Muscle activation rate of perceived exertion Running

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