Explosive contractions found to improve muscle strength
March 15, 2021 | News | No Comments
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December 20, 2024
December 19, 2024
December 19, 2024
March 15, 2021 | News | No Comments
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One group did the explosive contractions, one group did the sustained contractions, and a third group acted as a control group. The participants trained with 40 contractions repeated three times a week for three months. The force produced by every contraction was prescribed and monitored to ensure it was either explosive or sustained. An extensive range of performance and physiological measurements were done before and after the training to assess the changes.
The results showed that explosive contractions are an easier and less tiring way of increasing strength and functional capacity of the muscles, and therefore a highly efficient method of training. The method increases strength by assisting the nervous system in ‘switching on’ and activating the trained muscles. In comparison, the more traditional sustained contractions — which demand a lot of effort and soon become tiring — are actually a more effective way of increasing muscle mass. Increasing muscle mass may be the main training goal for some people, including athletes in some sports, for aesthetic reasons or metabolic health.
Lead author Dr Jonathan Folland, from the University’s School of Sport, Exercise and Health Sciences, said: “The easiest way to make muscles stronger has been debated by fitness and sports professionals for many years, but this study shows that it doesn’t have to mean lots of pain for any gain.
“Whereas traditional strength training is made up of slow, grinding contractions using heavy weights which is quite hard work, this study shows that short, sharp contractions are relatively easy to perform and a very beneficial way of building up strength. These short, explosive contractions may also be beneficial to older individuals and patient groups such as those with osteoarthritis, who would benefit from getting stronger, but are reluctant to undergo tiring sustained contractions.”
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