Eccentric load generation among different devices: narrative review with methodological approach
DOI:
https://doi.org/10.24310/riccafd.15.1.2026.22601Keywords:
eccentric training, resistance training, exercise equipment, sports performance, muscular rehabilitationAbstract
This study provides a narrative review of the devices used to generate eccentric load in muscle strength training, with an emphasis on their methodological differences, clinical applications, and health effects. Eccentric load, characterized by muscle contraction during muscle lengthening, has been shown to have significant benefits in physical performance, injury prevention, and rehabilitation, both in athletes and in clinical populations and older adults. Despite its advantages, there is a lack of knowledge about the different devices used, such as isokinetic, isoinertial, electrical, and pneumatic devices, each with specific characteristics in terms of resistance type, applicability, and operational limitations. The comparative analysis highlights that, although all devices improve muscle strength and joint health, they have key differences in accuracy, portability, cost, and adaptability. Recommendations are proposed for their safe and efficient use, prioritizing the individualization of training. This work seeks to serve as a basis for future research aimed at developing new, more accessible, and versatile technologies that optimize the use of eccentric loading in various contexts, contributing to the improvement of athletic performance and overall health.
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