Publication
Biomechanical Features of Backstroke to Breaststroke Transition Techniques in Age-Group Swimmers
| dc.contributor.author | Chainok, Phornpot | |
| dc.contributor.author | de Jesus, Karla | |
| dc.contributor.author | Mourão, Luis | |
| dc.contributor.author | Fonseca, Pedro Filipe Pereira | |
| dc.contributor.author | Zacca, Rodrigo | |
| dc.contributor.author | Fernandes, Ricardo J. | |
| dc.contributor.author | Vilas-Boas, João Paulo | |
| dc.date.accessioned | 2023-02-14T15:57:17Z | |
| dc.date.available | 2023-02-14T15:57:17Z | |
| dc.date.issued | 2022 | |
| dc.description.abstract | This study aimed to identify the biomechanical features of backstroke to breaststroke transition techniques (open, somersault, bucket, and crossover) in age-group swimmers. Eighteen preadolescent swimmers (12.2 ± 0.4 years old and 3–4 Tanner stages) underwent 4 weeks of systematic contextual interference training, comprising 16 sessions (40 min·session−1). Soon after, experimental testing was conducted where swimmers randomly performed 12 × 15m maximal turns (composed of 7.5m turn-in and 7.5m turn-out of the wall segments), three in each transition technique. Kinematical, kinetic, and hydrodynamic variables were assessed with a dual-media motion capture system (12 land and 11 underwater cameras), triaxial underwater force plates, and inverse dynamics. Variables were grouped in turn-in (approach and rotation) and turn-out (wall contact, gliding, and pull-out) phases, with factor analysis used to select the variables entering on multiple regressions. For the turn-in phase, 86, 77, 89, and 87% of the variance for open, somersault, bucket, and crossover turning techniques, respectively, was accounted by the 7.5 and 2.5m times, mean stroke length, and rotation time. For the turn-out phase, first gliding distance and time, second gliding depth, turn-out time, and dominating peak_Z push-off force accounted for 93% in open turn, while wall contact time, first gliding distance, breakout distance and time, turn-out time, dominating peak_Y push-off force, and second gliding drag coefficient accounted for 92% in a somersault turn. The foot plant index, push-off velocity, second gliding distance, and turn-out time accounted for 92% in bucket turn while breakout and turn-out time, non-dominating peak_Y and peak_Z push-off force, first and second gliding drag force and second gliding drag coefficient accounted for 90% in crossover turn, respectively. The findings in this study were novel and provided relevant biomechanical contribution, focusing on the key kinematic–temporal determinant during turn-in, rotation, and push-off efficacy, and the kinetic and hydrodynamic during turn-out, which would lead to improved backstroke to breaststroke transition techniques in 11–13 years-old age-group swimmers. | pt_PT |
| dc.description.sponsorship | This study was supported by the Faculty of the Sport Science, Burapha University, Thailand (grant number 062/2554). RZ was founded by Research Center in Physical Activity, Health and Leisure—CIAFEL—Faculty of Sports, University of Porto—FADEUP (FCT UID/DTP/00617/2020 and Laboratory for Integrative and Translational Research in Population Health (ITR), Porto, Portugal (LA/P/0064/2020). | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.doi | 10.3389/fspor.2022.802967 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.22/22273 | |
| dc.language.iso | eng | pt_PT |
| dc.publisher | Frontiers | pt_PT |
| dc.relation | UID/DTP/00617/2020 | pt_PT |
| dc.relation | LA/P/0064/2020 | pt_PT |
| dc.relation.publisherversion | https://www.frontiersin.org/articles/10.3389/fspor.2022.802967/full | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | pt_PT |
| dc.subject | Exercise | pt_PT |
| dc.subject | Aquatic locomotion | pt_PT |
| dc.subject | Swimming | pt_PT |
| dc.subject | Biomechanics | pt_PT |
| dc.subject | Motion capture | pt_PT |
| dc.subject | Force plate | pt_PT |
| dc.subject | Hydrodynamics | pt_PT |
| dc.subject | Performance | pt_PT |
| dc.title | Biomechanical Features of Backstroke to Breaststroke Transition Techniques in Age-Group Swimmers | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.title | Frontiers in Sports and Active Living | pt_PT |
| oaire.citation.volume | 4 | pt_PT |
| person.familyName | Rodrigues das Neves Correia Mourão | |
| person.givenName | Luis João | |
| person.identifier.ciencia-id | D418-E7B6-544E | |
| person.identifier.orcid | 0000-0002-7635-2219 | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |
| relation.isAuthorOfPublication | 74235956-1f54-43d4-941f-4d79fdead948 | |
| relation.isAuthorOfPublication.latestForDiscovery | 74235956-1f54-43d4-941f-4d79fdead948 |