Muscle Activation in World-Champion, World-Class, and National Breaststroke Swimmers.
Purpose: To investigate the muscle-activation patterns and coactivation with the support of kinematics in some of the world's best breaststrokers and identify performance discriminants related to national elites at maximal effort. Methods: Surface electromyography was collected in 8 muscles from 4 w...
| Publicado en: | International Journal of Sports Physiology & Performance Vol. 12; no. 4; pp. 538 - 548 |
|---|---|
| Autores principales: | , , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Human Kinetics Publishers, Inc.
Apr2017
|
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=124079805&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 124079805 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15550265 16IB jtl: International Journal of Sports Physiology & Performance issn: 15550265 maglogo: N pubinfo: dt: Apr2017 vid: 12 iid: 4 pid: 553 pub: Human Kinetics Publishers, Inc. place: Champaign, Illinois artinfo: ui: 124079805 124079805 124079805 10.1123/ijspp.2015-0703 124079805 ppf: 538 ppct: 10 formats: tig: atl: Muscle Activation in World-Champion, World-Class, and National Breaststroke Swimmers. aug: au: Olstad, Bjørn Harald Zinner, Christoph Vaz, João Rocha Cabri, Jan M. H. Kjendlie, Per-Ludvik affil: Dept of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway sug: subj: Swimming Athletes, Elite Muscle, Skeletal Physiology Kinematics Electromyography Movement Evaluation Athletic Performance Comparative Studies P-Value Descriptive Statistics Human ab: Purpose: To investigate the muscle-activation patterns and coactivation with the support of kinematics in some of the world's best breaststrokers and identify performance discriminants related to national elites at maximal effort. Methods: Surface electromyography was collected in 8 muscles from 4 world-class (including 2 world champions) and 4 national elite breaststroke swimmers during a 25-m breaststroke at maximal effort. Results: World-class spent less time during the leg recovery (P = .043), began this phase with a smaller knee angle (154.6° vs 161.8°), and had a higher median velocity of 0.18 m/s during the leg glide than national elites. Compared with national elites, world-class swimmers showed a difference in the muscle-activation patterns for all 8 muscles. In the leg-propulsion phase, there was less triceps brachii activation (1 swimmer 6% vs median 23.0% [8.8]). In the leg-glide phase, there was activation in rectus femoris and gastrocnemius during the beginning of this phase (all world-class vs only 1 national elite) and a longer activation in pectoralis major (world champions 71% [0.5] vs 50.0 [4.3]) (propulsive phase of the arms). In the leg-recovery phase, there was more activation in biceps femoris (50.0% [15.0] vs 20.0% [14.0]) and a later and quicker activation in tibialis anterior (40.0% [7.8] vs 52.0% [6.0]). In the stroke cycle, there was no coactivation in tibialis anterior and gastrocnemius for world champions. Conclusion: These components are important performance discriminants. They can be used to improve muscle-activation patterns and kinematics through the different breaststroke phases. Furthermore, they can be used as focus points for teaching breaststroke to beginners. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
|---|