dc.contributor.author | Escobar, David Simbana | |
dc.contributor.author | Hellard, Philippe | |
dc.contributor.author | Pyne, David B | |
dc.contributor.author | Seifert, Ludovic | |
dc.date.accessioned | 2019-07-04T12:35:43Z | |
dc.date.available | 2019-07-04T12:35:43Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 1065-8483 | |
dc.identifier.doi | 10.1123/jab.2017-0022 | |
dc.identifier.uri | http://hdl.handle.net/10072/383413 | |
dc.description.abstract | To study the variability in stroking parameters between and within laps and individuals during competitions, we compared and modeled the changes of speed, stroke rate, and stroke length in 32 top-level male and female swimmers over 4 laps (L1–L4) in 200-m freestyle events using video-derived 2-dimensional direct linear transformation. For the whole group, speed was greater in L1, with significant decreases across L2, L3, and L4 (1.80 ± 0.10 vs 1.73 ± 0.08; 1.69 ± 0.09; 1.66 ± 0.09 · s−1, P < .05). This variability was attributed to a decrease in stroke length (L2: 2.43 ± 0.19 vs L4: 2.20 ± 0.13 m, P < .05) and an increase in stroke rate (L2: 42.8 ± 2.6 vs L4: 45.4 ± 2.3 stroke · min−1, P < .05). The coefficient of variation and the biological coefficient of variation in speed were greater for male versus female (3.9 ± 0.7 vs 3.1 ± 0.7; 2.9 ± 1.0 vs 2.6 ± 0.7, P < .05) and higher in L1 versus L2 (3.9 ± 1.3 vs 3.1 ± 0.1; 2.9 ± 0.9 vs 2.3 ± 0.7, P < .05). Intra-lap speed values were best represented by a cubic (n = 38), then linear (n = 37) and quadratic model (n = 8). The cubic fit was more frequent for males (43.8%) than females (15.6%), suggesting greater capacity to generate higher acceleration after the turn. The various stroking parameters managements within lap suggest that each swimmer adapts his/her behavior to the race constraints. | |
dc.description.peerreviewed | Yes | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | HUMAN KINETICS PUBL INC | |
dc.relation.ispartofpagefrom | 53 | |
dc.relation.ispartofpageto | 64 | |
dc.relation.ispartofissue | 1 | |
dc.relation.ispartofjournal | JOURNAL OF APPLIED BIOMECHANICS | |
dc.relation.ispartofvolume | 34 | |
dc.subject.fieldofresearch | Biomedical engineering | |
dc.subject.fieldofresearch | Mechanical engineering | |
dc.subject.fieldofresearch | Sports science and exercise | |
dc.subject.fieldofresearchcode | 4003 | |
dc.subject.fieldofresearchcode | 4017 | |
dc.subject.fieldofresearchcode | 4207 | |
dc.title | Functional Role of Movement and Performance Variability: Adaptation of Front Crawl Swimmers to Competitive Swimming Constraints | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dc.type.code | C - Journal Articles | |
dc.description.version | Accepted Manuscript (AM) | |
gro.rights.copyright | © 2018 Human Kinetics. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal website for access to the definitive, published version. | |
gro.hasfulltext | Full Text | |
gro.griffith.author | Pyne, David B. | |