Residual Force Enhancement Is Present in Consecutive Post-Stretch Isometric Contractions of the Hamstrings during a Training Simulation
| العنوان: | Residual Force Enhancement Is Present in Consecutive Post-Stretch Isometric Contractions of the Hamstrings during a Training Simulation |
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| المؤلفون: | Rudi A Meir, Neil Chapman, Suzanne Broadbent, John W. Whitting, Zachary J. Crowley-McHattan |
| المصدر: | International Journal of Environmental Research and Public Health, Vol 18, Iss 1154, p 1154 (2021) International Journal of Environmental Research and Public Health Volume 18 Issue 3 |
| بيانات النشر: | MDPI AG, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Adult, Male, medicine.medical_specialty, hamstrings, electromyography, muscle, Health, Toxicology and Mutagenesis, Isometric torque, lcsh:Medicine, Hamstring Muscles, Isometric exercise, Electromyography, Knee extension, residual force enhancement, Biceps, Article, Simulation training, Joint rotation, 03 medical and health sciences, history dependence, 0302 clinical medicine, Isometric Contraction, Internal medicine, Humans, Medicine, Muscle, Skeletal, medicine.diagnostic_test, business.industry, lcsh:R, Public Health, Environmental and Occupational Health, Muscle activation, 030229 sport sciences, in vivo, Torque, Cardiology, Female, business, training simulation, 030217 neurology & neurosurgery |
| الوصف: | Residual force enhancement (rFE) is observed when isometric force following an active stretch is elevated compared to an isometric contraction at corresponding muscle lengths. Acute rFE has been confirmed in vivo in upper and lower limb muscles. However, it is uncertain whether rFE persists using multiple, consecutive contractions as per a training simulation. Using the knee flexors, 10 recreationally active participants (seven males, three females age 31.00 years ± 8.43 years) performed baseline isometric contractions at 150° knee flexion (180° representing terminal knee extension) of 50% maximal voluntary activation of semitendinosus. Participants performed post-stretch isometric (PS-ISO) contractions (three sets of 10 repetitions) starting at 90° knee extension with a joint rotation of 60° at 60° · s&minus 1 at 50% maximal voluntary activation of semitendinosus. Baseline isometric torque and muscle activation were compared to PS-ISO torque and muscle activation across all 30 repetitions. Significant rFE was noted in all repetitions (37.8&ndash 77.74%), with no difference in torque between repetitions or sets. There was no difference in activation of semitendinosus or biceps femoris long-head between baseline and PS-ISO contractions in all repetitions (ST baseline ISO = 0.095&ndash 1.000 ± 0.036&ndash 0.039 Mv, PS-ISO = 0.094&ndash 0.098 ± 0.033&ndash 0.038 and BFlh baseline ISO = 0.068&ndash 0.075 ± 0.031&ndash 0.038 Mv). This is the first investigation to observe rFE during multiple, consecutive submaximal PS-ISO contractions. PS-ISO contractions have the potential to be used as a training stimulus. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1661-7827 1660-4601 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6311bf8ab39366d9ffc87156a7ed082 https://www.mdpi.com/1660-4601/18/3/1154 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....e6311bf8ab39366d9ffc87156a7ed082 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 16617827 16604601 |
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