Strength is the motor capacity that a muscle, or group of muscles, exerts during an action to overcome or oppose an external load. Therefore, strength training is the category of physical training, usually anaerobic, in which the muscles exert their activity against an external load to induce contraction, thus increasing anaerobic resistance and their own size. It frequently involves the use of weights, but may take on many different forms.
If performed properly, this type of training can provide significant functional benefits, including increased strength and resistance of bones, muscles, tendons and ligaments, improved joint function, reduced risk of injury, increased bone density, metabolism and fitness, and improved cardiac function. Training is usually progressive, which means it involves increasing muscle strength by constantly increasing the weights used, with a variety of exercises and types of equipment to act on specific muscle groups.
Strength training is normally associated with lactate production, which is a limiting factor in physical performance. However, regular endurance exercise leads to skeletal muscle adaptations that can prevent lactate levels from rising. This is why it is important to measure the performance of each subject so as to optimally target the loads to be used and avoid forcing the muscles too much, which could lead to undesirable effects.
By using the Gyko inertial sensor, muscle strength can be evaluated and monitored over time.
When training is aimed at optimising performance, it becomes crucial for all athletes to objectively and accurately measure and analyse by how much their results have improved. For this reason, the sensor also allows the muscle profile curve and maximum limit value to be estimated, which are the key to setting up an adequate power strength training programme (see Figure 1).