Unilateral hamstrings static stretching can impair the affected and contralateral knee extension force but improve unilateral drop jump height
| العنوان: | Unilateral hamstrings static stretching can impair the affected and contralateral knee extension force but improve unilateral drop jump height |
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| المؤلفون: | Tyler Cavanaugh, Megan J Cox, David G. Behm, James D. Young, Dakota Peddle, Reagan L S Bilodeau, Sarah L Caldwell |
| المصدر: | European Journal of Applied Physiology. 119:1943-1949 |
| بيانات النشر: | Springer Science and Business Media LLC, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | medicine.medical_specialty, Flexibility (anatomy), medicine.diagnostic_test, Physiology, Contact time, business.industry, Public Health, Environmental and Occupational Health, 030229 sport sciences, General Medicine, Electromyography, Isometric exercise, Static stretching, 03 medical and health sciences, 0302 clinical medicine, medicine.anatomical_structure, Physical medicine and rehabilitation, Physiology (medical), Drop jump, Contralateral knee, medicine, Orthopedics and Sports Medicine, business, Range of motion, 030217 neurology & neurosurgery |
| الوصف: | Prolonged static stretching (SS) in isolation (no dynamic warm-up) can impair muscle performance. There are conflicting reports whether impairments are present in antagonist and contralateral muscles. The objective of this study was to assess the effect of unilateral hamstrings SS on ipsilateral stretched and contralateral limbs’ strength and jump power. The SS (four repetitions of 30-s) and control sessions involved unilateral testing of the stretched leg and contralateral leg for knee extension (KE) maximum voluntary isometric contraction (MVIC) force and electromyography (EMG), drop jump (DJ) height and contact time at 1-min post-stretching. There were significant KE MVIC force impairments for both the SS (p = 0.006, d = 0.3, − 8.1%) and contralateral (p = 0.02, d = 0.20, − 4.2%) leg. With normalized data, there was a near-significant (p = 0.1), small magnitude (d = 0.29), greater force impairment with the ipsilateral (93.0 ± 12.8% of pre-test) versus the contralateral (96.2 ± 9.1% of pre-test) KE MVIC force. DJ height significantly improved for the stretched leg (p = 0.03, d = 0.18, + 9.2%) with near-significant, improvements for the contralateral leg (p = 0.06, d = 0.22, + 12.1%). For the stretched leg, DJ contact time was significantly (p = 0.04, d = 0.18, + 3.4%) prolonged, but there was no significant change with the contralateral leg. Unilateral hamstrings SS induced strength deficits in the ipsilateral and contralateral knee extension MVIC and a prolongation of the stretched leg DJ contact period. In anticipation of maximal force outputs, prolonged SS in isolation (no dynamic warm-up included) can have negative consequences on antagonist and contralateral muscle performance. |
| تدمد: | 1439-6327 1439-6319 |
| DOI: | 10.1007/s00421-019-04182-x |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::b8c622dcc352e97a1cf2df0fb00ed16f https://doi.org/10.1007/s00421-019-04182-x |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........b8c622dcc352e97a1cf2df0fb00ed16f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14396327 14396319 |
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| DOI: | 10.1007/s00421-019-04182-x |