Effects of knee frontal plane position on pedal forces during cycling: A preliminary study
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista Brasileira de Cineantropometria & Desempenho Humano (Online) |
Texto Completo: | https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2009v11n2p142 |
Resumo: | The purpose of this study was to compare the force applied to the pedal when cycling with the knees almost touching the bicycle frame (adduction position) compared to the position usually adopted by cyclists (reference position) and a position of the knees away from the bicycle frame (abduction position). Six cyclists were evaluated. Maximal oxygen uptake (VO2MAX) was defined, and then the three different knee positions on the frontal plane were assessed. Three minutes of cycling in the reference position, adduction position and abduction position were conducted, using oxygen uptake (VO2) at which the cyclists had achieved the second ventilatory threshold. An instrumented two-dimensional pedal was used to measure the forces applied to the right pedal. The average VO2 and power output did not differ between the adduction (50.4±6.9 ml.kg-1.min-1 and 263±29 W), abduction (50.8±5.9 ml.kg-1.min-1 and 250±46 W) and reference position (50.4±5.9 ml.kg-1.min-1 and 246±47 W). Pedaling cadence increased significantly during adduction (94±8 rpm) and abduction (95±5 rpm) compared to the reference position (89±8 rpm). The force results indicated no differences in the effective force or effectiveness index between the reference, adduction and abduction positions. Resultant force increased during adduction (284.5±44.5 N) compared to the reference position (246.9±39.2 N). The results indicate that the cyclists were able to generate higher resultant force during cycling with the knees close to the bicycle frame, but were unable to effectively transmit this force to the movement. |
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Effects of knee frontal plane position on pedal forces during cycling: A preliminary studyEfeitos da posição dos joelhos no plano frontal sobre as forças aplicadas no ciclismo: estudo preliminarThe purpose of this study was to compare the force applied to the pedal when cycling with the knees almost touching the bicycle frame (adduction position) compared to the position usually adopted by cyclists (reference position) and a position of the knees away from the bicycle frame (abduction position). Six cyclists were evaluated. Maximal oxygen uptake (VO2MAX) was defined, and then the three different knee positions on the frontal plane were assessed. Three minutes of cycling in the reference position, adduction position and abduction position were conducted, using oxygen uptake (VO2) at which the cyclists had achieved the second ventilatory threshold. An instrumented two-dimensional pedal was used to measure the forces applied to the right pedal. The average VO2 and power output did not differ between the adduction (50.4±6.9 ml.kg-1.min-1 and 263±29 W), abduction (50.8±5.9 ml.kg-1.min-1 and 250±46 W) and reference position (50.4±5.9 ml.kg-1.min-1 and 246±47 W). Pedaling cadence increased significantly during adduction (94±8 rpm) and abduction (95±5 rpm) compared to the reference position (89±8 rpm). The force results indicated no differences in the effective force or effectiveness index between the reference, adduction and abduction positions. Resultant force increased during adduction (284.5±44.5 N) compared to the reference position (246.9±39.2 N). The results indicate that the cyclists were able to generate higher resultant force during cycling with the knees close to the bicycle frame, but were unable to effectively transmit this force to the movement.O objetivo foi comparar a força aplicada no pedal de ciclistas, pedalando com os joelhos tangenciando o quadro da bicicleta (posição de Adução), com a posição prefe¬rida (posição de Referência), e a posição com os joelhos afastados do quadro da bicicleta (posição de Abdução). Seis ciclistas foram avaliados. Foi determinado o consumo máximo de oxigênio (VO2Máx), sendo posteriormente os ciclistas avaliados em três situações: Posição de Referência; Posição de Adução; Posição de Abdução. O VO2 referente ao segundo limiar ventilatório foi utilizado para normalização da carga de trabalho. A medição da força apli¬cada foi realizada por um pedal instrumentado. O VO2 e a potência produzida não diferiram entre as posições de Adução (50,4 ± 6,9 ml.kg-1.min-1 e 263 ± 29 W), Abdução (50,8 ± 5,9 ml.kg-1.min-1 e 250 ± 46 W) e a posição de Referência (50,4 ± 5,9 ml.kg-1.min-1 e 246 ± 47 W). A cadência de pedalada aumentou significativamente nas posições de Adução (94 ± 8 rpm) e Abdução (95 ± 5 rpm), comparadas à Posição de Referência (89 ± 8 rpm). Não foram observadas diferenças para a força efetiva e índice de efetividade entre as posições de Referência, Adução e Abdução. A força resultante apresentou aumento na Posição de Adução (284,5 ± 44,5 N) quando comparada à Posição de Referência (246,9 ± 39,2 N). Estes resultados indicam que os ciclistas avaliados foram capazes de aplicar mais força no pedal na posição de Adução, no entanto, não foram capazes de direcionar esta força de forma mais efetiva para o movimento.Universidade Federal de Santa Catarina. Florianópolis, SC. Brasil2009-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion"Avaliado por Pares",Avaliado por ParesExperimentalapplication/pdfapplication/pdfhttps://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2009v11n2p14210.1590/1980-0037.2009v11n2p142Brazilian Journal of Kinanthropometry and Human Performance; Vol. 11 No. 2 (2009); 142-149Revista Brasileira de Cineantropometria e Desempenho Humano; v. 11 n. 2 (2009); 142-1491980-00371415-8426reponame:Revista Brasileira de Cineantropometria & Desempenho Humano (Online)instname:Universidade Federal de Santa Catarina (UFSC)instacron:UFSCporhttps://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2009v11n2p142/9366https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2009v11n2p142/16475Bini, Rodrigo RicoCarpes, Felipe PivettaDiefenthaeler, Fernandoinfo:eu-repo/semantics/openAccess2020-01-22T10:23:25Zoai:periodicos.ufsc.br:article/10100Revistahttps://periodicos.ufsc.br/index.php/rbcdh/PUBhttps://periodicos.ufsc.br/index.php/rbcdh/oairbcdh@contato.ufsc.br || portaldeperiodicos.bu@contato.ufsc.br1980-00371415-8426opendoar:2020-01-22T10:23:25Revista Brasileira de Cineantropometria & Desempenho Humano (Online) - Universidade Federal de Santa Catarina (UFSC)false |
dc.title.none.fl_str_mv |
Effects of knee frontal plane position on pedal forces during cycling: A preliminary study Efeitos da posição dos joelhos no plano frontal sobre as forças aplicadas no ciclismo: estudo preliminar |
title |
Effects of knee frontal plane position on pedal forces during cycling: A preliminary study |
spellingShingle |
Effects of knee frontal plane position on pedal forces during cycling: A preliminary study Bini, Rodrigo Rico |
title_short |
Effects of knee frontal plane position on pedal forces during cycling: A preliminary study |
title_full |
Effects of knee frontal plane position on pedal forces during cycling: A preliminary study |
title_fullStr |
Effects of knee frontal plane position on pedal forces during cycling: A preliminary study |
title_full_unstemmed |
Effects of knee frontal plane position on pedal forces during cycling: A preliminary study |
title_sort |
Effects of knee frontal plane position on pedal forces during cycling: A preliminary study |
author |
Bini, Rodrigo Rico |
author_facet |
Bini, Rodrigo Rico Carpes, Felipe Pivetta Diefenthaeler, Fernando |
author_role |
author |
author2 |
Carpes, Felipe Pivetta Diefenthaeler, Fernando |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Bini, Rodrigo Rico Carpes, Felipe Pivetta Diefenthaeler, Fernando |
description |
The purpose of this study was to compare the force applied to the pedal when cycling with the knees almost touching the bicycle frame (adduction position) compared to the position usually adopted by cyclists (reference position) and a position of the knees away from the bicycle frame (abduction position). Six cyclists were evaluated. Maximal oxygen uptake (VO2MAX) was defined, and then the three different knee positions on the frontal plane were assessed. Three minutes of cycling in the reference position, adduction position and abduction position were conducted, using oxygen uptake (VO2) at which the cyclists had achieved the second ventilatory threshold. An instrumented two-dimensional pedal was used to measure the forces applied to the right pedal. The average VO2 and power output did not differ between the adduction (50.4±6.9 ml.kg-1.min-1 and 263±29 W), abduction (50.8±5.9 ml.kg-1.min-1 and 250±46 W) and reference position (50.4±5.9 ml.kg-1.min-1 and 246±47 W). Pedaling cadence increased significantly during adduction (94±8 rpm) and abduction (95±5 rpm) compared to the reference position (89±8 rpm). The force results indicated no differences in the effective force or effectiveness index between the reference, adduction and abduction positions. Resultant force increased during adduction (284.5±44.5 N) compared to the reference position (246.9±39.2 N). The results indicate that the cyclists were able to generate higher resultant force during cycling with the knees close to the bicycle frame, but were unable to effectively transmit this force to the movement. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion "Avaliado por Pares", Avaliado por Pares Experimental |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2009v11n2p142 10.1590/1980-0037.2009v11n2p142 |
url |
https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2009v11n2p142 |
identifier_str_mv |
10.1590/1980-0037.2009v11n2p142 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2009v11n2p142/9366 https://periodicos.ufsc.br/index.php/rbcdh/article/view/1980-0037.2009v11n2p142/16475 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina. Florianópolis, SC. Brasil |
publisher.none.fl_str_mv |
Universidade Federal de Santa Catarina. Florianópolis, SC. Brasil |
dc.source.none.fl_str_mv |
Brazilian Journal of Kinanthropometry and Human Performance; Vol. 11 No. 2 (2009); 142-149 Revista Brasileira de Cineantropometria e Desempenho Humano; v. 11 n. 2 (2009); 142-149 1980-0037 1415-8426 reponame:Revista Brasileira de Cineantropometria & Desempenho Humano (Online) instname:Universidade Federal de Santa Catarina (UFSC) instacron:UFSC |
instname_str |
Universidade Federal de Santa Catarina (UFSC) |
instacron_str |
UFSC |
institution |
UFSC |
reponame_str |
Revista Brasileira de Cineantropometria & Desempenho Humano (Online) |
collection |
Revista Brasileira de Cineantropometria & Desempenho Humano (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Cineantropometria & Desempenho Humano (Online) - Universidade Federal de Santa Catarina (UFSC) |
repository.mail.fl_str_mv |
rbcdh@contato.ufsc.br || portaldeperiodicos.bu@contato.ufsc.br |
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1789435121373282304 |