Specificity of training velocity and training load on gains in isokinetic knee joint strength

• DOI: 10.1046/j.1365-201x.1996.438162000.x
• Publication Date: 2003-11-07T20:33:48Z
• Authors: P. AAGAARD; E. B. SIMONSEN; M. TROLLE; J. BANGSBO; K. KLAUSEN
• Keywords: Knee flexion; Strength Training

The present study investigated the effects of three different strength training regimes on isokinetic profile knee extensors (quadriceps, Q) and flexors (hamstrings, H) if increases in were accompanied by an enhanced performance during a more complex leg movement, soccer kick. Twenty‐two elite players performed 12 weeks (three times per week) at either high resistance (HR group: 4 sets, 8 reps, 8RM loading), low (LR 24 24RM loaded kicking movements (LK 16 16RM loading) while one group served as controls (CO group). Isokinetic concentric eccentric moment force was obtained (KinCom) peak (M ) 50° flexion 50 angular velocities 30, 120, 240° s ‐1 . joint unchanged groups LR, LK, CO. However, after HR training, M (±SD) increased ( P <0.01) 30° (Q, 258±37 to 297±57 Nm; H, 122±22 140±21 Nm). Furthermore, 120 274±60 345±57 Nm <0.01), 291±56 309±49 275±43 293±36 <0.05), respectively; 143±32 158±25 Nm, 152±39 169±31 148±27 163±19 <0.05)). Corresponding <0.05) observed for H/Q ratio calculated hamstring divided quadriceps (H ecc /Q con , representative extension) from 107 118% (based 90 105% ). Kicking estimated maximal ball flight velocity unaffected any investigated. In conclusion, only heavy‐resistance induced muscle absence learning effects. Concentric gains actual found over entire range examined. capacity muscles providing stability fast extension augmented result training. Strength should be integrated with other types involving movement pattern order increase within patterns.