Recovery Kinetics of Knee Flexor and Extensor Strength after a Football Match

• DOI: 10.1371/journal.pone.0128072
• Publication Date: 2015-06-04T14:52:01Z
• Authors: Dimitrios Draganidis; Athanasios Chatzi...; Alexandra Avloniti; José C. Barbero-Á...; Magni Mohr; Paraskevi Malliou; Vassilios Gourgoulis; Chariklia K. Deli; Ioannis I. Douroudos; Konstantinos Marg...; Asimenia Gioftsidou; Andreas D. Fouris; Athanasios Z. Jam...; Yiannis Koutedakis; Ioannis G. Fatouros
• Keywords: Football players; Flexor muscles

We examined the temporal changes of isokinetic strength performance knee flexor (KF) and extensor (KE) after a football match. Players were randomly assigned to control (N = 14, participated only in measurements practices) or an experimental group 20, also match). Participants trained daily during two days Match training overload was monitored with GPS devices. Venous blood sampled muscle damage assessed pre-match, post-match at 12h, 36h 60h post-match. Isometric as well eccentric concentric peak torque flexors extensors both limbs (dominant non-dominant) measured on dynamometer baseline Functional (KFecc/KEcon) conventional (KFcon/KEcon) ratios then calculated. Only declined match group. In group: a) isometric (P<0.05) 12h (both limbs) limb only), b) for 60°/s 180°/s demonstrating greater reduction than torque, c) deterioration dominant limb, d) functional ratio more sensitive match-induced fatigue prolonged decline. Discriminant regression analysis revealed that recovery may be related amount actions performed athletes' football-specific conditioning. Our data suggest kinetics demonstrate strength, velocity specificity depend physical players' conditioning level.