Comparison of 2- and 3-Minute Inter-Repetition Rest Periods on Maximal Jerk Technique and Power Maintenance. Issue 3 (3rd July 2019)

• Record Type: Journal Article
• Authors: Ammar, Achraf; Riemann, Bryan L.; Trabelsi, Khaled; Blaumann, Marcel; Abdelkarim, Osama; Chtourou, Hamdi; Driss, Tarak; Hökelmann, Anita
• Is Part Of: Research quarterly for exercise and sport. Volume 90:Issue 3(2019)
• Page Start: 287
• Page End: 296
• Publication Date: 2019-07-03
• Subjects: Kinematic -- kinetic -- strength -- weightlifting; Physical education and training -- Periodicals; Health education -- Periodicals; Recreation -- Periodicals; Physical Education and Training -- Periodicals; Sports -- Periodicals; Exercise -- Periodicals; Education -- Periodicals; Lichamelijke opvoeding; Sport; Exercice -- Périodiques; Sports -- Périodiques; 613.7105
• DOI: 10.1080/02701367.2019.1594664
• Languages: English
• ISSNs: 0270-1367

Abstract

ABSTRACT: Purpose : The aim of this study was to examine the effect of 3- vs. 2-minute inter maximal-repetition rest period (IMRRP) on maintaining jerk technical efficiency and power production during two successive maximal repetitions of Clean & Jerk (C&J).Methods : In a randomized, within subject, repeated measures design, nine elite-weightlifters (age: 24.4 ± 3.6 years, body mass: 77.2 ± 7.1 kg, height 176.0 ± 6.4 cm and 1RM C&J: 170.0 ± 5.0 kg) performed 2-separate testing sessions using 2 (IMRRP-2) and 3 (IMRRP-3) -minute IMRRP, while barbell kinematics and kinetics and joint kinematics were recorded.Results : Statistical analysis showed that one minute longer IMRRP enhanced the maintenance of optimal jerk technique evidenced by reducing declines in peak vertical barbell displacement (2.74%; p = .03), peak barbell velocity (2.89%; p = .03), and peak knee (1.61%; p = .03) and hip extensions (1.59%; p = .03) during the drive phase of the jerk. Additionally, IMRRP-3 led to maintaining optimal lifting strategy by reducing the increase in horizontal displacement during the descending (3.85%; p = .04) and ascending (5.42%; p = .02) phases. Increasing IMRRP from 2min to 3min was also shown to enhance kinetic variables evidenced by prompting higher peak vGRF (2.01%; p = .04) and power (2.55%; p = .04).Conclusion : To better identify an athlete's maximal jerk technique and power maintenance, the results of this study suggest 3min as more appropriate IMRRP during successive C&J at 100% 1RM.