Joint specificity of stretch shortening cycle potentiation at propulsion onset during jump test performance
| العنوان: | Joint specificity of stretch shortening cycle potentiation at propulsion onset during jump test performance |
|---|---|
| المؤلفون: | Marzouq K, Almutairi, Gary R, Hunter, Mario, Inacio, Christopher P, Hurt, Donald H, Lein, William R, Reed, Harshvardhan, Singh |
| المصدر: | The Journal of Sports Medicine and Physical Fitness. 63 |
| بيانات النشر: | Edizioni Minerva Medica, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Physical Therapy, Sports Therapy and Rehabilitation, Orthopedics and Sports Medicine |
| الوصف: | Joint specific stretch-shortening cycle (SSC) potentiation of lower extremity joints at propulsion onset during jump test performance (JTP) can temporally affect SSC potentiation. However, joint-specific SSC potentiation at propulsion onset during JTP is unknown.Twenty-two healthy young adults, 12 men and 10 women, performed: vertical jumps (a) with a preliminary countermovement (CMJ), (b) from a squat position held isometrically for 2-3 seconds at the same knee angle of CMJ (SJ), and (c) after landing from a 15 cm high platform (DJ). Kinetics and kinematics of lower extremity joints were collected. The propulsion onset was calculated uniquely for the hip, knee, and ankle joints and defined as the first positive data point (after the eccentric phase) of the joint angular velocity for each respective joint. SSC potentiation was calculated as the ratio of jump height (JH) and joint extensor moments for CMJ/SJ, DJ/SJ, and DJ/CMJ.JH ratio for CMJ/SJ, DJ/SJ, and DJ/CMJ were1 (all p0.01). Hip, knee, and ankle extensor moment ratio was1 (all p0.01) for CMJ/SJ and DJ/SJ, while for DJ/CMJ, extensor moment ratio was1 only for the ankle (p0.03). SSC potentiation was greatest at the ankle followed by the hip and knee for CMJ/SJ and DJ/SJ (all p0.05).SSC potentiation at propulsion onset was largest at the ankle followed by hip and knee. Our findings emphasize the importance of the ankle versus hip and knee joints regarding SSC potentiation at the very beginning of JTP. |
| تدمد: | 1827-1928 0022-4707 |
| DOI: | 10.23736/s0022-4707.22.13751-5 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::121dcff6c0468f0e77c758890da94bc2 https://doi.org/10.23736/s0022-4707.22.13751-5 |
| رقم الانضمام: | edsair.doi.dedup.....121dcff6c0468f0e77c758890da94bc2 |
| قاعدة البيانات: | OpenAIRE |
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