<b> Blood lactate concentrations and kinematic behavior of young runners in 50 and 100m sprints </b<
The purpose of this study was to verify the kinematic behavior of young runners during 50 and 100m sprints andtheir blood lactate concentration at the end of these sprints. Kinematic analysis was performed on the speed curve andsome variables analyzed at the end of these runs. Fourteen individuals t...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Santa Catarina
2008-12-01
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| Series: | Revista Brasileira de Cineantropometria e Desempenho Humano |
| Subjects: | |
| Online Access: | http://www.periodicos.ufsc.br/index.php/rbcdh/article/view/393 |
| _version_ | 1828281145916129280 |
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| author | Juliano Dal Pupo Ivon Chagas da Rocha Junior Carlos Bolli Mota |
| author_facet | Juliano Dal Pupo Ivon Chagas da Rocha Junior Carlos Bolli Mota |
| author_sort | Juliano Dal Pupo |
| collection | DOAJ |
| description | The purpose of this study was to verify the kinematic behavior of young runners during 50 and 100m sprints andtheir blood lactate concentration at the end of these sprints. Kinematic analysis was performed on the speed curve andsome variables analyzed at the end of these runs. Fourteen individuals took part in this study, being 7 males (12.35 ± 0.83years) and 7 females (12.61 ± 0.70 years). The speed curve was constructed using the panning method. The remainingkinematic variables were measured using two-dimensional videography with a Peak Motus video camera operating at 180Hz. Blood samples were taken from the runners’ earlobes in order to assay lactate concentration. The results demonstratethat at both distances top speed is reached at 40m. This, however, corresponds to 80% of the distance of the 50m sprint,but just 40% of the 100m run. The significant differences in kinematic variables observed between the two sprints were:increased duration of the support phase in the males, decreased stride frequency among the females and lower averagespeed at the end of 100m in comparison to 50m, in all individuals. The highest blood lactate concentrations were observedafter the 100m run. It was concluded that there was greater loss of performance during 100m, based on the differencesbetween some kinematic variables and the major loss of speed. Moreover, despite lactate concentration being higher afterthis run, the values were still considered low, indicating a lack of anaerobic capacity in these individuals. |
| first_indexed | 2024-04-13T08:10:29Z |
| format | Article |
| id | doaj.art-7c776fdd04514d3293a9cf8cebfc8386 |
| institution | Directory Open Access Journal |
| issn | 1415-8426 1980-0037 |
| language | English |
| last_indexed | 2024-04-13T08:10:29Z |
| publishDate | 2008-12-01 |
| publisher | Universidade Federal de Santa Catarina |
| record_format | Article |
| series | Revista Brasileira de Cineantropometria e Desempenho Humano |
| spelling | doaj.art-7c776fdd04514d3293a9cf8cebfc83862022-12-22T02:55:00ZengUniversidade Federal de Santa CatarinaRevista Brasileira de Cineantropometria e Desempenho Humano1415-84261980-00372008-12-01104393398<b> Blood lactate concentrations and kinematic behavior of young runners in 50 and 100m sprints </b<Juliano Dal PupoIvon Chagas da Rocha JuniorCarlos Bolli MotaThe purpose of this study was to verify the kinematic behavior of young runners during 50 and 100m sprints andtheir blood lactate concentration at the end of these sprints. Kinematic analysis was performed on the speed curve andsome variables analyzed at the end of these runs. Fourteen individuals took part in this study, being 7 males (12.35 ± 0.83years) and 7 females (12.61 ± 0.70 years). The speed curve was constructed using the panning method. The remainingkinematic variables were measured using two-dimensional videography with a Peak Motus video camera operating at 180Hz. Blood samples were taken from the runners’ earlobes in order to assay lactate concentration. The results demonstratethat at both distances top speed is reached at 40m. This, however, corresponds to 80% of the distance of the 50m sprint,but just 40% of the 100m run. The significant differences in kinematic variables observed between the two sprints were:increased duration of the support phase in the males, decreased stride frequency among the females and lower averagespeed at the end of 100m in comparison to 50m, in all individuals. The highest blood lactate concentrations were observedafter the 100m run. It was concluded that there was greater loss of performance during 100m, based on the differencesbetween some kinematic variables and the major loss of speed. Moreover, despite lactate concentration being higher afterthis run, the values were still considered low, indicating a lack of anaerobic capacity in these individuals.http://www.periodicos.ufsc.br/index.php/rbcdh/article/view/393ChildrenSprintingLactateKinematicsCriançasCorridas de velocidadeLactatoCinemática. |
| spellingShingle | Juliano Dal Pupo Ivon Chagas da Rocha Junior Carlos Bolli Mota <b> Blood lactate concentrations and kinematic behavior of young runners in 50 and 100m sprints </b< Revista Brasileira de Cineantropometria e Desempenho Humano Children Sprinting Lactate Kinematics Crianças Corridas de velocidade Lactato Cinemática. |
| title | <b> Blood lactate concentrations and kinematic behavior of young runners in 50 and 100m sprints </b< |
| title_full | <b> Blood lactate concentrations and kinematic behavior of young runners in 50 and 100m sprints </b< |
| title_fullStr | <b> Blood lactate concentrations and kinematic behavior of young runners in 50 and 100m sprints </b< |
| title_full_unstemmed | <b> Blood lactate concentrations and kinematic behavior of young runners in 50 and 100m sprints </b< |
| title_short | <b> Blood lactate concentrations and kinematic behavior of young runners in 50 and 100m sprints </b< |
| title_sort | b blood lactate concentrations and kinematic behavior of young runners in 50 and 100m sprints b |
| topic | Children Sprinting Lactate Kinematics Crianças Corridas de velocidade Lactato Cinemática. |
| url | http://www.periodicos.ufsc.br/index.php/rbcdh/article/view/393 |
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