Susceptibility of hamstring injuries in soccer. Increasing number of hamstring injuries and recurrent injuries in sports such as soccer. Thought the role of neuromuscular co ordination and the interplay of the different hamstring muscles is thought to be key in determining hamstring injury (thought to be able to be measured by a muscle function MRI). Investigate the risk of hamstring injuries by exploring muscle characterises using a muscle function MRI. Resting scan followed by a strenuous hamstring exercise followed by a post scan. Signal of intensity shift between both scans was used to detect differences in metabolic characteristics. Risk of a first hamstring injury was due to alterations intra muscular hierarchy in terms of the magnitude of metabolic response to heavy eccentric effort. Re injury was associated with a substantial deficit in hamstring strength endurance. Thought that inadequate eccentric muscle endurance could leave to reoccurring hamstring injuries.

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