Comparison of 2- and 3-Minute Inter-Repetition Rest Periods on Maximal Jerk Technique and Power Maintenance

Autor/inn/en	Ammar, Achraf; Riemann, Bryan L.; Trabelsi, Khaled; Blaumann, Marcel; Abdelkarim, Osama; Chtourou, Hamdi; Driss, Tarak; Hökelmann, Anita
Titel	Comparison of 2- and 3-Minute Inter-Repetition Rest Periods on Maximal Jerk Technique and Power Maintenance
Quelle	In: Research Quarterly for Exercise and Sport, 90 (2019) 3, S.287-296 (10 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0270-1367
DOI	10.1080/02701367.2019.1594664
Schlagwörter	Repetition; Athletics; Kinetics; Human Body; Athletes; Equipment; Motion; Physical Activity Level; Outcome Measures + Suchen Sie Ihr Suchwort? Wiederholung; Leichtathletik; Kinetik; Menschlicher Körper; Athlet; Bewegungsablauf
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 [plus or minus] 3.6 years, body mass: 77.2 [plus or minus] 7.1 kg, height 176.0 [plus or minus] 6.4 cm and 1RM C&J: 170.0 [plus or minus] 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 = 0.03), peak barbell velocity (2.89%; p = 0.03), and peak knee (1.61%; p = 0.03) and hip extensions (1.59%; p = 0.03) 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 = 0.04) and ascending (5.42%; p = 0.02) phases. Increasing IMRRP from 2min to 3min was also shown to enhance kinetic variables evidenced by prompting higher peak vGRF (2.01%; p = 0.04) and power (2.55%; p = 0.04). 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. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01