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This article and any supplementary material should be cited as follows: Zeller S, Abel T, Smith PM, Strueder HK. Influence of noncircular chainring on.

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Presentation on theme: "This article and any supplementary material should be cited as follows: Zeller S, Abel T, Smith PM, Strueder HK. Influence of noncircular chainring on."— Presentation transcript:

1 This article and any supplementary material should be cited as follows: Zeller S, Abel T, Smith PM, Strueder HK. Influence of noncircular chainring on male physiological parameters in hand cycling. J Rehabil Res Dev. 2015;52(2):XX–XX. http://dx.doi.org/10.1682/JRRD.2014.03.0070 Slideshow Project DOI:10.1682/JRRD.2014.03.0070JSP Influence of noncircular chainring on male physiological parameters in hand cycling Sebastian Zeller, MSc Sport Science; Thomas Abel, Prof Dr; Paul M. Smith, Dr; Heiko K. Strueder, Prof Dr

2 This article and any supplementary material should be cited as follows: Zeller S, Abel T, Smith PM, Strueder HK. Influence of noncircular chainring on male physiological parameters in hand cycling. J Rehabil Res Dev. 2015;52(2):XX–XX. http://dx.doi.org/10.1682/JRRD.2014.03.0070 Slideshow Project DOI:10.1682/JRRD.2014.03.0070JSP Aim – Examine influence of noncircular chainring (NCC) compared with conventional circular chainring (CC) on hand cycling performance. Relevance – In racing and daily living, hand cycling is more efficient than handrim wheelchair propulsion.

3 This article and any supplementary material should be cited as follows: Zeller S, Abel T, Smith PM, Strueder HK. Influence of noncircular chainring on male physiological parameters in hand cycling. J Rehabil Res Dev. 2015;52(2):XX–XX. http://dx.doi.org/10.1682/JRRD.2014.03.0070 Slideshow Project DOI:10.1682/JRRD.2014.03.0070JSP Method 11 nondisabled males with no hand cycling experience completed trials using NCC and CC in random order on two separate occasions: – Incremental exercise test. – Two 20 s sprint tests. – 20 min endurance tests. – Two more 20 s sprint tests. Two-way repeated-measures analysis of variance compared effects of NCC and CC on power data of sprint tests and metabolic response during endurance test.

4 This article and any supplementary material should be cited as follows: Zeller S, Abel T, Smith PM, Strueder HK. Influence of noncircular chainring on male physiological parameters in hand cycling. J Rehabil Res Dev. 2015;52(2):XX–XX. http://dx.doi.org/10.1682/JRRD.2014.03.0070 Slideshow Project DOI:10.1682/JRRD.2014.03.0070JSP Results Average power values of sprint tests: – No significant difference between NCC and CC. Over time, values of 1st and 3rd sprint tests were higher than those of 2nd and 4th sprint tests for both chainrings. Values of energy expenditure, gross efficiency, and net efficiency after 10 and 20 min of endurance test using NCC and CC: – No significant differences.

5 This article and any supplementary material should be cited as follows: Zeller S, Abel T, Smith PM, Strueder HK. Influence of noncircular chainring on male physiological parameters in hand cycling. J Rehabil Res Dev. 2015;52(2):XX–XX. http://dx.doi.org/10.1682/JRRD.2014.03.0070 Slideshow Project DOI:10.1682/JRRD.2014.03.0070JSP Conclusion Performance optimization using NCC in hand cycling could not be proven using current test conditions and focusing on physiological parameters.

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