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The verification phase and reliability of physiological parameters in peak testing of elite wheelchair athletes
journal contributionposted on 16.11.2012 by Christof Leicht, Keith Tolfrey, John P. Lenton, Nicolette Bishop, Vicky Goosey-Tolfrey
Any type of content formally published in an academic journal, usually following a peer-review process.
The purpose of this study was (1) to examine the value of a verification phase (VER) in a peak testing protocol and (2) to assess the reliability of peak physiological variables in wheelchair athletes. On two separate days, eight tetraplegic (TETRA), eight paraplegic (PARA) and eight non-spinal cord-injured (NON-SCI) athletes performed treadmill ergometry, consisting of a graded exercise test to exhaustion (GXT) followed by a VER. Peak oxygen uptake _V O2peak was compared (1) between GXT and VER and (2) between test days. _V O2peak did not differ between GXT and VER (P = 0.27), and coefficients of variation between GXT and VER were in the range of 2.9 and 6.4 % for all subgroups. Coefficients of variation of _V O2peak between test days were 9.3 % (TETRA), 4.5 % (PARA) and 3.3 % (NON-SCI). It is therefore concluded that whilst a VER can be used for a more robust determination of _V O2peak, a deviation of up to *6 % between GXT and VER should be considered as acceptable. For between-day analyses, relatively large changes in _V O2peak are required to confirm ‘‘true’’ differences, especially in TETRA athletes. This may be due to their lower aerobic capacity, which results in a larger relative variation compared with the other subgroups.
- Sport, Exercise and Health Sciences