Article info not available in publisher’s website, verified from PubMed. Author initiated. Yellow in Sherpa: author can archive pre-print, author can archive post-print with restriction: •18 months embargo. Author cannot archive publisher's version/PDF 16/1/14 HD. Cited in others but Unable to verify article in this journal, Retired 30.1.14-MMM  Verified from SportsDiscus and VU catalogue. full-text no longer on T&F website Lyn 25/2/14