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- W778444189 abstract "Neuromuscular explosive strength (defined as rate of force development; RFD) isconsidered important during explosive functional human movements; however thisassociation has been poorly documented. It is also unclear how different variants ofstrength training may influence RFD and its neuromuscular determinants. Furthermore,RFD has typically been measured in isometric situations, but how it is influenced by thetypes of contraction (isometric, concentric, eccentric) is unknown. This thesis comparedneuromuscular function in explosive power athletes (athletes) and untrained controls,and assessed the relationship between RFD in isometric squats with sprint and jumpperformance. The athletes achieved a greater RFD normalised to maximum strength(+74%) during the initial phase of explosive contractions, due to greater agonistactivation (+71%) in this time. Furthermore, there were strong correlations (r2 = 0.39)between normalised RFD in the initial phase of explosive squats and sprintperformance, and between later phase absolute explosive force and jump height (r2 =0.37), confirming an association between explosive athletic performance and RFD. Thisthesis also assessed the differential effects of short-term (4 weeks) training formaximum vs. explosive strength, and whilst the former increased maximum strength(+20%) it had no effect on RFD. In contrast explosive strength training improvedexplosive force production over short (first 50 ms; +70%) and long (>50 ms; +15%)time periods, due to improved agonist activation (+65%) and maximum strength(+11%), respectively. Explosive strength training therefore appears to have greaterfunctional benefits than maximum strength training. Finally, the influence ofcontraction type on RFD was assessed, and the results provided unique evidence thatexplosive concentric contractions are 60% more effective at utilising the available forcecapacity of the muscle, that was explained by superior agonist activation. This workprovides a comprehensive analysis of the association between athletic performance andRFD, the differential effects of maximum vs. explosive strength training, and theinfluence of contraction type on the capacity for RFD." @default.
- W778444189 created "2016-06-24" @default.
- W778444189 creator A5087692709 @default.
- W778444189 date "2011-01-01" @default.
- W778444189 modified "2023-09-27" @default.
- W778444189 title "The influence of training and athletic performance on the neural and mechanical determinants of muscular rate of force development" @default.
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