Person:
Yáñez García, Juan Manuel

Profesor/a Sustituto Interino
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First Name
Juan Manuel
Last Name
Yáñez García
Affiliation
Universidad Pablo de Olavide
Department
Deporte e Informática
Research Center
Area
Educación Física y Deportiva
Research Group
PAIDI Areas
PhD programs
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Now showing 1 - 2 of 2
  • Publication
    Effects of Combined Resistance Training and Plyometrics on Physical Performance in Young Soccer Players
    (Thieme Publishing, 2015-07-16) Franco Márquez, Felipe; Rodríguez Rosell, David; González Suárez, José Manuel; Pareja Blanco, Fernando; Mora Custodio, Ricardo; Yáñez García, Juan Manuel; González Badillo, Juan José
    This study aimed to determine the effects of combined resistance training and plyometrics on physical performance in under-15 soccer players. One team (n=20) followed a 6-week resistance training program combined with plyometrics plus a soccer training program (STG), whereas another team (n=18) followed only the soccer training (CG). Strength training consisted of full squats with low load (45¿60% 1RM) and low-volume (2¿3 sets and 4¿8 repetitions per set) combined with jumps and sprints twice a week. Sprint time in 10 and 20¿m (T10, T20, T10¿20), CMJ height, estimated one-repetition maximum (1RMest), average velocity attained against all loads common to pre- and post-tests (AV) and velocity developed against different absolute loads (MPV20, 30, 40 and 50) in full squat were selected as testing variables to evaluate the effects of the training program. STG experienced greater gains (P<0.05) in T20, CMJ, 1RMest, AV and MPV20, 30, 40 and 50 than CG. In addition, STG showed likely greater effects in T10 and T10¿20 compared to CG. These results indicate that only 6 weeks of resistance training combined with plyometrics in addition to soccer training produce greater gains in physical performance than typical soccer training alone in young soccer players.
  • Publication
    Short-term Recovery Following Resistance Exercise Leading or not to Failure.
    (Thieme Publishing, 2015-12-14) González Badillo, Juan José; Rodríguez Rosell, David; Sánchez Medina, Luis; Ribas Serna, Juan; López López, Covadonga; Mora Custodio, Ricardo; Yáñez García, Juan Manuel; Pareja Blanco, Fernando
    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.