Thèse de doctorat en Sciences et techniques des activités physiques et sportives
Soutenue en 2015
à Nantes , dans le cadre de École doctorale Cognition, éducation, interactions (Nantes) , en partenariat avec Laboratoire Motricité, Interactions, Performance (laboratoire) et de Université Nantes-Angers-Le Mans - COMUE (autre partenaire) .
The choice of the resistance modality provides opportunities for coaches and practitioners to generate many training stimuli. This thesis work is a continuation of studies whose specificity is to compare the neuromuscular response to isoinertial (IT) and isokinetic (IK) exercises in standardized conditions. In a first study, we developed a method for calculating the joint torque during IT ballistic movements. A second study aimed to compare the neuromuscular response to IT and IK contractions performed at various angular velocities. The main part of this thesis work has focused on strengthendurance exercises, i. E. Performing a high amount of repetitions against a low resistance force. This form of training is of some interest to improve muscular strength and endurance. We tested the specific influence of the resistance modality on the kinetic and etiology of the neuromuscular fatigue induced by a strengthendurance protocol. The decrease in torque generation capacity was equal at the end of the IT and IK protocol while the mechanisms behind the fatigue process depended on resistance modality. A last study sought to compare the neuromuscular adaptations to 8 weeks of IT vs IK strengthendurance training. The results showed that the resistance modality does not influence the muscle maximal strength and endurance. Nevertheless, IT resistance training induced a higher rate of torque development and increase the transfer of strength gains to others movement velocities.