Acute fatigue effects on ground reaction force of lower limbs during countermovement jumps
Parameters associated with the performance of countermovement jumps were identified from vertical ground reaction force recordings during fatigue and resting conditions. Fourteen variables were defined, dividing the vertical ground reaction force into negative and positive external working times and...
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| Format: | Article |
| Language: | English |
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Universidade Estadual Paulista (UNESP)
2013-12-01
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| Series: | Motriz: Revista de Educacao Fisica |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-65742013000400011&lng=en&tlng=en |
| _version_ | 1818040096048283648 |
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| author | Carlos Gabriel Fábrica Paula V. González Jefferson Fagundes Loss |
| author_facet | Carlos Gabriel Fábrica Paula V. González Jefferson Fagundes Loss |
| author_sort | Carlos Gabriel Fábrica |
| collection | DOAJ |
| description | Parameters associated with the performance of countermovement jumps were identified from vertical ground reaction force recordings during fatigue and resting conditions. Fourteen variables were defined, dividing the vertical ground reaction force into negative and positive external working times and times in which the vertical ground reaction force values were lower and higher than the participant's body weight. We attempted to explain parameter variations by considering the relationship between the set of contractile and elastic components of the lower limbs. We determined that jumping performance is based on impulsion optimization and not on instantaneous ground reaction force value: the time in which the ground reaction force was lower than the body weight, and negative external work time was lower under fatigue. The results suggest that, during fatigue, there is less contribution from elastic energy and from overall active state. However, the participation of contractile elements could partially compensate for the worsening of jumping performance. |
| first_indexed | 2024-12-10T08:09:05Z |
| format | Article |
| id | doaj.art-9a85a1b7a7de45cc9e8330cb9f17c8df |
| institution | Directory Open Access Journal |
| issn | 1980-6574 |
| language | English |
| last_indexed | 2024-12-10T08:09:05Z |
| publishDate | 2013-12-01 |
| publisher | Universidade Estadual Paulista (UNESP) |
| record_format | Article |
| series | Motriz: Revista de Educacao Fisica |
| spelling | doaj.art-9a85a1b7a7de45cc9e8330cb9f17c8df2022-12-22T01:56:37ZengUniversidade Estadual Paulista (UNESP)Motriz: Revista de Educacao Fisica1980-65742013-12-0119473774510.1590/S1980-65742013000400011S1980-65742013000400011Acute fatigue effects on ground reaction force of lower limbs during countermovement jumpsCarlos Gabriel Fábrica0Paula V. González1Jefferson Fagundes Loss2Universidad de la RepúblicaUniversidad de la RepúblicaUniversidade Federal do Rio Grande do SulParameters associated with the performance of countermovement jumps were identified from vertical ground reaction force recordings during fatigue and resting conditions. Fourteen variables were defined, dividing the vertical ground reaction force into negative and positive external working times and times in which the vertical ground reaction force values were lower and higher than the participant's body weight. We attempted to explain parameter variations by considering the relationship between the set of contractile and elastic components of the lower limbs. We determined that jumping performance is based on impulsion optimization and not on instantaneous ground reaction force value: the time in which the ground reaction force was lower than the body weight, and negative external work time was lower under fatigue. The results suggest that, during fatigue, there is less contribution from elastic energy and from overall active state. However, the participation of contractile elements could partially compensate for the worsening of jumping performance.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-65742013000400011&lng=en&tlng=enbiomecánicarigidez muscularanálisis y desempeño de tareasfatiga |
| spellingShingle | Carlos Gabriel Fábrica Paula V. González Jefferson Fagundes Loss Acute fatigue effects on ground reaction force of lower limbs during countermovement jumps Motriz: Revista de Educacao Fisica biomecánica rigidez muscular análisis y desempeño de tareas fatiga |
| title | Acute fatigue effects on ground reaction force of lower limbs during countermovement jumps |
| title_full | Acute fatigue effects on ground reaction force of lower limbs during countermovement jumps |
| title_fullStr | Acute fatigue effects on ground reaction force of lower limbs during countermovement jumps |
| title_full_unstemmed | Acute fatigue effects on ground reaction force of lower limbs during countermovement jumps |
| title_short | Acute fatigue effects on ground reaction force of lower limbs during countermovement jumps |
| title_sort | acute fatigue effects on ground reaction force of lower limbs during countermovement jumps |
| topic | biomecánica rigidez muscular análisis y desempeño de tareas fatiga |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1980-65742013000400011&lng=en&tlng=en |
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