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Kieran Cooke, Tom Outram, Raph Brandon, Mark Waldron, Will Vickery, James Keenan and Jamie Tallent

 min), dynamic stretching, and running activities of increasing speed (∼5 min). Participants performed 4 CMJ trials. During each CMJ, participants held a wooden dowel across their back similar to a back squat position. All jumps were strictly vertical, in that, takeoff and landing were performed within

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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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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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Ben M. Krings, Brandon D. Shepherd, Hunter S. Waldman, Matthew J. McAllister and JohnEric W. Smith

recommendations to RE is less understood. RE is characterized by short, repeated bouts of intense effort, and CMR may be a beneficial nutritional strategy to stimulate increases in performance. Recently, beneficial effects with CMR have been observed during bench press (BP) and back squat exercises ( Clarke et

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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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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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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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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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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