Acceleratory match-play demands of a Super Rugby team over a competitive season by Owen, Shaun M., Venter, Rachel E., du Toit, Stephan, Kraak, Wilbur J.

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Comparing the Yo-Yo intermittent and Bronco tests and their associations with match demands among amateur rugby union referees by Sant’Anna, Ricardo T, Roberts, Simon P, Moore, Lee J, Kraak, Wilbur J, Stokes, Keith A

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Time-motion analysis of elite under-19 female netball players using GPS by Coetzee, Frederik F., Shaw, Michael L., Kraak, Wilbur J., Schall, Robert

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Ruck-Play as Performance Indicator during the 2010 Six Nations Championship by Kraak, Wilbur J., Welman, Karen E.

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Analysis of movement patterns and work-to-rest ratios for different panels of South African Rugby Union referees during matchrefereeing by Kraak, J. Wilbur, Malan, Dawie D.J., van den Berg, H. Pieter

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Effect of match-related contextual factors on positional performance in the national rugby league by Wedding, C. J., Gomez, M. A., Woods, C. T., Sinclair, W. H., Leicht, A. S.

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