Neuromuscular, Biochemical, Endocrine, and Mood Responses to Small-Sided Games' Training in Professional Soccer

William, S, Turner, AN, Weston, M, Russell, M, Johnston, MJ, and Kilduff, LP. Neuromuscular, biochemical, endocrine, and mood responses to small-sided games' training in professional soccer. J Strength Cond Res 32(9): 2569–2576, 2018—The 24-hour responses to small-sided games' (SSGs) soccer training were characterized. Professional soccer players (n = 16) performed SSG's (4vs4 + goalkeepers; 6 × 7-minutes, 2-minute interset recovery) with performance (peak power output [PPO] and jump height [JH]), physiological (blood creatine kinase [CK], lactate, salivary testosterone, and cortisol), and mood measures collected before (baseline), and after (immediately; 0, +2, and +24 hours). For PPO and JH, possibly small-moderate reductions occurred at 0 hour (−1.1 W·kg−1; ±0.9 W·kg−1, −3.2 cm; ±1.9 cm, respectively), before returning to baseline at +2 hours (trivial), and declining thereafter (small-moderate effect) at +24 hours (−0.9 W·kg−1; ±0.8 W·kg−1, −2.5 cm; ±1.2 cm, respectively). Lactate increased at 0 hours (likely large; +1.3 mmol·L−1; ±0.5 mmol·L−1), reduced at +2 hours (likely-small; −0.5 mmol·L−1; ±0.2 mmol·L−1), and returned to baseline at 24 hours (trivial). A very likely small increase in CK occurred at 0 hour (+97 μ·L−1; ±28 μ·L−1), persisting for +24 hours (very likely small; +94 μ·L−1; ±49 μ·L−1). Possibly small increases in testosterone (+20 pg·ml−1; ±29 pg·ml−1) occurred at 0 hour, before likely mo...
Source: Journal of Strength and Conditioning Research - Category: Sports Medicine Tags: Original Research Source Type: research