title: Short-term Recovery Following Resistance Exercise Leading or not to Failure.
abstract: This study analyzed the time course of recovery following 2 resistance exercise protocols differing in level of effort: maximum (to failure) vs. half-maximum number of repetitions per set. 9 males performed 3 sets of 4 vs. 8 repetitions with their 80% 1RM load, 3×4(8) vs. 3×8(8), in the bench press and squat. Several time-points from 24 h pre- to 48 h post-exercise were established to assess the mechanical (countermovement jump height, CMJ; velocity against the 1 m·s(-1) load, V1-load), biochemical (testosterone, cortisol, GH, prolactin, IGF-1, CK) and heart rate variability (HRV) and complexity (HRC) response to exercise. 3×8(8) resulted in greater neuromuscular fatigue (higher reductions in repetition velocity and velocity against V1-load) than 3×4(8). CMJ remained reduced up to 48 h post-exercise following 3×8(8), whereas it was recovered after 6 h for 3×4(8). Significantly greater prolactin and IGF-1 levels were found for 3×8(8) vs. 3×4(8). Significant reductions in HRV and HRC were observed for 3×8(8) vs. 3×4(8) in the immediate recovery. Performing a half-maximum number of repetitions per set resulted in: 1) a stimulus of faster mean repetition velocities; 2) lower impairment of neuromuscular performance and faster recovery; 3) reduced hormonal response and muscle damage; and 4) lower reduction in HRV and HRC following exercise.
authors.affiliation: Sports and Athletic Performance Research Centre. Faculty of Sport. Pablo de Olavide University, Seville, Spain.
authors.forename: J J
authors.initials: JJ
authors.lastname: González-Badillo
authors.affiliation: Sports and Athletic Performance Research Centre. Faculty of Sport. Pablo de Olavide University, Seville, Spain.
authors.forename: D
authors.initials: D
authors.lastname: Rodríguez-Rosell
authors.affiliation: Instituto Navarro de Deporte y Juventud (INDJ), Studies, Research and Sports Medicine Centre, Pamplona, Spain.
authors.forename: L
authors.initials: L
authors.lastname: Sánchez-Medina
authors.affiliation: Medical Physiology and Biophysics Department. University of Seville, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Ribas
authors.affiliation: Junta de Andalucía, Centro Andaluz de Medicina del Deporte, Seville, Spain.
authors.forename: C
authors.initials: C
authors.lastname: López-López
authors.affiliation: Sports and Athletic Performance Research Centre. Faculty of Sport. Pablo de Olavide University, Seville, Spain.
authors.forename: R
authors.initials: R
authors.lastname: Mora-Custodio
authors.affiliation: Sports and Athletic Performance Research Centre. Faculty of Sport. Pablo de Olavide University, Seville, Spain.
authors.forename: J M
authors.initials: JM
authors.lastname: Yañez-García
authors.affiliation: Sports and Athletic Performance Research Centre. Faculty of Sport. Pablo de Olavide University, Seville, Spain.
authors.forename: F
authors.initials: F
authors.lastname: Pareja-Blanco
mesh_terms: D000328:Adult; D003402:Creatine Kinase / Q000097:blood; D005221:Fatigue; D013006:Growth Hormone / Q000097:blood; D006339:Heart Rate; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D007334:Insulin-Like Growth Factor I / Q000032:analysis; D008297:Male; D053580:Muscle Strength; D018482:Muscle, Skeletal / Q000502:physiology*; D011388:Prolactin / Q000097:blood; D055070:Resistance Training / Q000379:methods*; D012146:Rest; D013739:Testosterone / Q000097:blood; D055815:Young Adult
chemical_list: D013739:Testosterone; D007334:Insulin-Like Growth Factor I; D011388:Prolactin; D013006:Growth Hormone; D003402:Creatine Kinase; D006854:Hydrocortisone