Lower limb influence on standing arm-cranking ('grinding')
| Autor: | Matthew T.G. Pain, N. Zaher, Jonathan P. Folland, Vernon Neville |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Adult
Male Ergometry Rotation Physical Exertion Physical Therapy Sports Therapy and Rehabilitation Work rate Knee Joint Athletic Performance Lower limb Upper Extremity Oxygen Consumption Medicine Humans Orthopedics and Sports Medicine Force platform Ground reaction force Orthodontics Cross-Over Studies business.industry Lactate threshold Anatomy Sagittal plane Respiratory Function Tests body regions medicine.anatomical_structure Lower Extremity Arm Lactates Americas business Range of motion human activities |
| Zdroj: | International journal of sports medicine. 30(10) |
| ISSN: | 1439-3964 |
| Popis: | Standing arm-cranking ('grinding') is predominantly an upper-body exercise, however, the contribution of the legs to this activity is unknown. The purpose of the study was to examine the influence of normal lower-limb movement on physiological strain during arm-cranking. Eight elite professional America's Cup grinders performed two exercise trials, on an adjustable standing arm-crank ergometer with SRM powercrank, in a cross-over design. Each trial comprised of two 5-min stages at the same work rate ( approximately lactate threshold) with the knee joint splinted or normal movement available. Vertical ground reaction forces (VGRF) and knee joint angle were determined from two force plates and sagittal plane video, respectively. Work rate was identical for the two conditions (246 (14) vs. 246 (13) W, p=0.7). Knee joint range of motion and unilateral VGRF amplitude were greater during normal compared with splinted arm-cranking (both p |
| Databáze: | OpenAIRE |
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