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Mercer, Tom and Gleeson, Nigel and Mitchell, J (1997) Fitness profiles of professional soccer players before and after pre-season training. In: Science and Football III. Chapman and Hall, London, pp. 112-117. ISBN 0419221603
Mitchell, J and Mercer, Tom and Springate, T (1995) An examination of the validity and utility of selected methods for the assessment of habitual physical activity. In: Sport, Leisure and Ergonomics. E & FN Spon, London, pp. 185-191. ISBN 0419206000