The articles provided in the links below might also be useful for your study:

https://www.hss.edu/playbook/the-importance-of-post-game-recovery-strategies-for-soccer-players/#.VvZ7JTFRp94

http://www.michaelshepardmd.com/pdfs/return-to-play-guidelines-for-soccer-athletes-after-acl-surgery.pdf

http://www.totalperformancept.com/tag/soccer-training/

I have enclosed the link to my article recently published by the BMJ that deals with Electrical Twitch-Obtaining intramuscular Stimulation (ETOIMS) for a patient with chronic lower back pain from sports. My next paper will be on the use of (ETOIMS) in sports specially for football written together with chief team Physician of one of the UK premier league teams

This is the link to the already published paper :

http://casereports.bmj.com/cgi/content/full/bcr-2015-211816?ijkey=TFlyCCTz1g85rzB&keytype=ref

Thanks everybody.

I'm sure that these material will can help me.