title: Effect of Different Interrepetition Rest Periods on Barbell Velocity Loss During the Ballistic Bench Press Exercise.
abstract: This study investigated the effect of introducing different interrepetition rest (IRR) periods on the ability to sustain maximum bench press throw velocity with a range of loads commonly used to develop upper-body power. Thirty-four physically active collegiate men (age: 21.5 ± 2.8 years; body mass: 75.2 ± 7.2 kg; height: 176.9 ± 4.9 cm) were tested during 2 consecutive weeks. During the first week, the maximum dynamic strength (repetition maximum [RM]) in bench press exercise was determined (RM = 76.7 ± 13.2 kg). The following week, 3 testing sessions were conducted with 48 hours apart in random order. In each day of evaluation, only 1 load (30%RM, 40%RM, or 50%RM) was assessed in the bench press throw exercise. With each load, subjects performed 3 single sets of 15 repetitions (15-minute interset rest) with 3 different sets configurations: continuous repetitions (CR), 6 seconds of IRR (IRR6), and 12 seconds of IRR (IRR12). The decrease of peak velocity (PV) was significantly lower for IRR12 compared with CR and IRR6 at least since the repetition 4. No differences between CR and IRR6 protocols were found until the repetition 7 at 30%RM and 40%RM and until the repetition 5 at 50%RM. The decrease of PV during the CR protocol was virtually linear for the 3 loads analyzed (r > 0.99); however, this linear relationship became weaker for IRR6 (r = 0.79-0.95) and IRR12 (r = 0.35-0.87). These results demonstrate that IRR periods allow increasing the number of repetitions before the onset of significant velocity losses.
authors: 1Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain; 2Center for Exercise and Sport Science Research, Edith Cowan University, Joondalup, Australia; and 3Spanish Sport Council, Sierra Nevada Training Centre, Granada, Spain.
authors: Amador
authors: A
authors: García-Ramos
authors: Paulino
authors: P
authors: Padial
authors: G Gregory
authors: GG
authors: Haff
authors: Javier
authors: J
authors: Argüelles-Cienfuegos
authors: Miguel
authors: M
authors: García-Ramos
authors: Javier
authors: J
authors: Conde-Pipó
authors: Belén
authors: B
authors: Feriche
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D018763:Muscle Fatigue / Q000502:physiology; D053580:Muscle Strength / Q000502:physiology; D012146:Rest / Q000502:physiology*; D014891:Weight Lifting / Q000502:physiology*; D055815:Young Adult