A problem the can arise from overtraining is muscle soreness. This is caused by strenuous exercise to the muscles to the point of exhaustion. This is caused by lack of oxygen and blood flow to the muscle. The feeling of burning or aching in the muscle is produced by the nerve endings. To help the muscles get back to normal you need to do a light cool down period and drink plenty of fluids. You can also suffer from DOMS Delayed onset Muscle Soreness if you overstrain the muscles. If you suffer from DOMS you will notice that muscle soreness increases with passive stretching or an active contraction of the muscle. Muscle stiffness and the onset of pain is another sign.
Strength deficits developed prior to the onset of soreness and persist after soreness has subsisted. This could be the result of muscle damage which will directly effect the structural strength and integrity of the contraction in the muscle which results in pain. It is important if you have damaged the muscle that you apply ice and rest and go see your doctor. If you are in pain you should not do dynamic resistance exercises if you cannot do any part of a work out you should stop and not damage the muscle any mare. You should avoid high impact activities such as jumping or hopping. You should not do high velocity movements.