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The Influence of ski Type on Muscle Activity, Performance, and Self-Efficacy in Young Alpine ski Racers

Journal of Science in Sport and Exercise 2021年第3期3卷 312-319页

作者： Heidi B.Nunnikhoven Cory Snyder Ronald W.Kipp Michael J.Decker John G.Seifert Movement Science Laboratory Montana State UniversityBozemanMT 59717USA squaw valley ski team Olympic ValleyCAUSA University of Denver DenverCOUSA Department of Sport and Exercise Science University of SalzburgHallein-RifAustria Athletes Performance Center Red Bull SportsSalzburgAustria

Wide skis are the most popular ski sold in the United States and are skied routinely in all types of terrain,especially by young *** study investigated the influence of slalom(SL,64 mm underfoot width)and wide skis(WS,97.7 mm underfoot width)on perceptual responses,timed performance,edge inclination angles,and EMG in young alpine ski *** subjects,mean age 12.8±0.5 years,completed one run on each of two courses which were set to approximate the different turning radii of each *** completed a Likert-type questionnaire to assess components of self-efficacy after each *** activity was recorded on the gluteus medius(GM),vastus lateralis,tibialis anterior and peroneus longus(PL).Per-ceptions of confidence,aggressiveness,speed,and skiing on line were significantly greater,by about 31%,for SL than WS regardless of *** times were significantly less by 4% for SL than WS,peak edge inclination angle was 7%greater for SL than WS,and PL activity was 40% less for SL compared to *** racers are developing skills to improve their racing techniques and are still forming technique strategies to deal with the many factors present in skiing which may disrupt learning *** lower perceptual and performance responses on WS,young ski racers who ski on groomed snow with WS could be interfering with the adaptation of fundamental racing technique at a critical time in their development.

关键词： Alpine skiing Electromyography ski type Confidence

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