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Kevin L. de Keijzer, Stuart A. McErlain-Naylor, Antonio Dello Iacono and Marco Beato

recent investigation by Bauer et al 2 comparing different volumes of traditional back squats reported enhanced jumping performance consistently throughout all sets, but significant peak power increases after 2 and 3 sets in comparison with 1 set. No previous studies have utilized a flywheel device to

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Irineu Loturco, Timothy Suchomel, Chris Bishop, Ronaldo Kobal, Lucas A. Pereira and Michael McGuigan

a recent review. 20 Wisloff et al 23 reported significant correlations between HS 1RM and sprint and jump performance (from .71 to .94) in professional soccer players. Similarly, McBride et al 19 found significant relationships among a series of speed tests (5, 10, and 40 yd) and back-squat 1RM

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Dustin J. Oranchuk, Eric J. Drinkwater, Riki S. Lindsay, Eric R. Helms, Eric T. Harbour and Adam G. Storey

traditional compound movements such as the back squat (high force) or jump squat (high velocity) exercise. Therefore, the optimal PC load for peak power is reported to occur between 70% to 80% of 1RM (∼46–53 W/kg) depending on the utilized calculation method. 17 – 19 In the sport of weightlifting, it is

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Amador García-Ramos, Francisco Luis Pestaña-Melero, Alejandro Pérez-Castilla, Francisco Javier Rojas and Guy Gregory Haff

and conditioning practitioners . Strength Cond J . 2010 ; 32 : 66 – 79 . doi:10.1519/SSC.0b013e3181eb341b 10.1519/SSC.0b013e3181eb341b 4. Banyard HG , Nosaka K , Sato K , Haff GG . Validity of various methods for determining velocity, force, and power in the back squat . Int J Sports

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Francisco Luis Pestaña-Melero, G. Gregory Haff, Francisco Javier Rojas, Alejandro Pérez-Castilla and Amador García-Ramos

HG , Nosaka K , Haff GG . Reliability and validity of the load–velocity relationship to predict the 1RM back squat . J Strength Cond Res . 2017 ; 31 ( 7 ): 1897 – 1904 . PubMed doi:10.1519/JSC.0000000000001657 27669192 10.1519/JSC.0000000000001657 8. Brzycki M . Strength testing

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Amador García-Ramos, Guy Gregory Haff, Francisco Luis Pestaña-Melero, Alejandro Pérez-Castilla, Francisco Javier Rojas, Carlos Balsalobre-Fernández and Slobodan Jaric

-velocity relationship to predict the 1RM back squat . J Strength Cond Res . 2017 ; 31 ( 7 ): 1897 – 1904 . PubMed doi:10.1519/JSC.0000000000001657 27669192 10.1519/JSC.0000000000001657 28. Zivkovic MZ , Djuric S , Cuk I , Suzovic D , Jaric S . A simple method for assessment of muscle force, velocity

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Kevin McCurdy and John Walker

. Electromyographic activity of the hamstrings during performance of the leg curl, stiff-leg deadlift, and back squat movements . J Strength Cond Res . 1999 ; 13 ( 2 ): 168 – 174 . 3. Ono T , Okuwaki T , Fukubayashi T . Differences in activation patterns of knee flexor muscles during concentric and

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Michelle S. Rockwell, Madlyn I. Frisard, Janet W. Rankin, Jennifer S. Zabinsky, Ryan P. Mcmillan, Wen You, Kevin P. Davy and Matthew W. Hulver

Collegiate Strength and Conditioning Coaches Association. The participants completed a maximal-effort one-repetition parallel back squat, standing broad jump and standing vertical jump, and pull-ups and dips to failure. The testing protocols described in detail by the National Strength and Conditioning

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Dean Ritchie, Justin Keogh, Steven Stern, Peter Reaburn, Fergus O’Connor and Jonathan D. Bartlett

lower body weights session included a barbell back squat (4 sets × 5–8 reps), barbell deadlift (4 sets × 5–8 reps), dumbbell step-up (4 sets ×10–12 reps), and dumbbell Romanian single-leg deadlift (4 sets ×10–12 reps). Statistical Analysis In line with the experimental approach to the study design

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Marco Beato, Stuart A. McErlain-Naylor, Israel Halperin and Antonio Dello Iacono

.1993.265.6.C1456 10.1152/ajpcell.1993.265.6.C1456 12. Bauer P , Sansone P , Mitter B , Makivic B , Seitz LB , Tschan H . Acute effects of back squats on countermovement jump performance across multiple sets of a contrast training protocol in resistance-trained men . J Strength Cond