Muscle strains and tears occur commonly in non-contact running activities .
Therefore the high volume of running activities performed in training may explain the higher incidence of lower limb muscle strains sustained during training ( 25 ) and ( 45 ) .
Muscle strains and tears occur commonly in non-contact running activities , and therefore the high volume of running activities performed in training may explain the higher incidence of lower limb muscle strains sustained during training ( 25 ) and ( 45 ) .