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Training Intensity: Improving Muscle Performance

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The traditional approach to improve muscle performance measures such as strength and power has been to train at various percentages of the one repetition maximum (1RM) and modify volume and frequency of training accordingly. In sports where acyclic movement is used to reach the maximal performance, such as throws, jumps, kicks or fast changes in the direction, rapid increase or decrease in speed, it is often necessary to produce maximum mechanical power output. This mechanical power output is quantified through the collinear relationship of force and velocity. Force is a pushing or pulling action resulting from the interaction with another object (i.e. an athlete pushing or pulling against a loaded barbell). Velocity refers to a rate at which …show more content…
If an athlete is able to move a load with low force, but at a high velocity then the training intensity is considered low to moderate intensity. Training with heavy and light loads is what is termed training intensity. Training intensity is the rate at which a training exercise or session proceeds (Stone et al., 1998) by the given effort an athlete contributes to complete the given exercise or exercise protocol for the day. Training with heavy loads is used to enhance strength, whereas training with light loads improves power production (Caiozzo et al. 1981; Kanehisa and Miyashita 1983; Kaneko et al. 1983). Squatting with a mass on the shoulders is one of the most widely used training exercises for the development of strength in the lower leg extensor muscles (McLaughlin et al. 1977), or for general fitness and rehabilitation exercises (Beynnon and Johnson 1996). Velocity based training (VBT) has recently been recognized as an efficacious method of training and monitoring; however, little data exists quantifying the intra-set variability and whether load affects this …show more content…
which could have a significant impact on the reliability of the utilization of VBT. The current trends in research have begun using movement velocity as an evaluation tool in resistance training (Gonzalez-Badillo & Sanchez-Medina, 2010; Judovtseff, Harris, Crielaard, & Cronin, 2011). The metric of concentric movement velocity has shown to be proportional to exercise intensity in resistance training (Judovtseff et al., 2011). It may be difficult to relate specific exercise intensities, usually expressed in percentages, to work rates encountered in sport competition through a velocity based tool due to the intrinsic and external performance variability previously mentioned for each athlete. Given the vast complexity of factors affecting velocity based training, we wanted to examine if load was a major determining factor of inconsistencies present between sets at given loads. Therefore, the purpose of this analysis was to determine the intra-set variability in mean concentric velocity during the back squat at 8 different

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