title: Constraints influencing sports wheelchair propulsion performance and injury risk.
abstract: The Paralympic Games are the pinnacle of sport for many athletes with a disability. A potential issue for many wheelchair athletes is how to train hard to maximise performance while also reducing the risk of injuries, particularly to the shoulder due to the accumulation of stress placed on this joint during activities of daily living, training and competition. The overall purpose of this narrative review was to use the constraints-led approach of dynamical systems theory to examine how various constraints acting upon the wheelchair-user interface may alter hand rim wheelchair performance during sporting activities, and to a lesser extent, their injury risk. As we found no studies involving Paralympic athletes that have directly utilised the dynamical systems approach to interpret their data, we have used this approach to select some potential constraints and discussed how they may alter wheelchair performance and/or injury risk. Organism constraints examined included player classifications, wheelchair setup, training and intrinsic injury risk factors. Task constraints examined the influence of velocity and types of locomotion (court sports vs racing) in wheelchair propulsion, while environmental constraints focused on forces that tend to oppose motion such as friction and surface inclination. Finally, the ecological validity of the research studies assessing wheelchair propulsion was critiqued prior to recommendations for practice and future research being given.
authors.affiliation: Sport Performance Research Institute New Zealand, School of Sport and Recreation, AUT University, Private Bag 92006, Auckland 1142, New Zealand. jkeogh@bond.edu.au.
authors.forename: Emily
authors.initials: E
authors.lastname: Churton
authors.forename: Justin Wl
authors.initials: JW
authors.lastname: Keogh
references.citation: J Rehabil Res Dev. 1998 Jun;35(2):210-8
references.pmid: 9651893
references.citation: Sports Med. 2000 Aug;30(2):137-43
references.pmid: 10966152
references.citation: J Rehabil Res Dev. 2002 Nov-Dec;39(6):635-49
references.pmid: 17943666
references.citation: Adapt Phys Activ Q. 2010 Apr;27(2):96-112
references.pmid: 20440022
references.citation: Res Q Exerc Sport. 2003 Sep;74(3):257-69
references.pmid: 14510290
references.citation: Work. 2000;15(1):67-76
references.pmid: 12441510
references.citation: J Strength Cond Res. 2009 Jan;23(1):275-83
references.pmid: 19125101
references.citation: J Rehabil Res Dev. 2005 Jul-Aug;42(4):447-58
references.pmid: 16320141
references.citation: J Strength Cond Res. 2008 Nov;22(6):1992-2002
references.pmid: 18978610
references.citation: Br J Sports Med. 2007 Nov;41(11):739-44
references.pmid: 17957009
references.citation: Arch Phys Med Rehabil. 2007 Jan;88(1):81-7
references.pmid: 17207680
references.citation: J Rehabil Res Dev. 2002 Nov-Dec;39(6):701-9
references.pmid: 17943672
references.citation: Paraplegia. 1995 May;33(5):296-9
references.pmid: 7630659
references.citation: Paraplegia. 1990 Jun;28(5):335-41
references.pmid: 2235043
references.citation: J Spinal Cord Med. 2005;28(5):407-14
references.pmid: 16869087
references.citation: Sports Med. 2001;31(5):339-67
references.pmid: 11347685
references.citation: J Sports Sci. 2003 Nov;21(11):921-6
references.pmid: 14626371
references.citation: J Rehabil Res Dev. 1990 Winter;27(1):21-6
references.pmid: 2308081
references.citation: Spinal Cord. 2011 Nov;49(11):1103-27
references.pmid: 21647163
references.citation: J Rehabil Res Dev. 2004 May;41(3B):421-8
references.pmid: 15543460
references.citation: J Appl Biomech. 2008 Aug;24(3):280-7
references.pmid: 18843158
references.citation: Adapt Phys Activ Q. 2011 Apr;28(2):157-72
references.pmid: 21757787
references.citation: Arch Phys Med Rehabil. 2000 Mar;81(3):368-73
references.pmid: 10724085
references.citation: Scand J Rehabil Med. 1997 Sep;29(3):181-6
references.pmid: 9271153
references.citation: J Biomech. 2005 Jan;38(1):15-22
references.pmid: 15519335
references.citation: Sports Biomech. 2008 Jan;7(1):2-9
references.pmid: 18341132
references.citation: Spinal Cord. 1998 Jun;36(6):418-26
references.pmid: 9648199
references.citation: J Rehabil Res Dev. 2004 May;41(3B):403-14
references.pmid: 15543458
references.citation: Sports Biomech. 2007 Sep;6(3):246-60
references.pmid: 17933190
references.citation: Sports Biomech. 2011 Sep;10(3):234-53
references.pmid: 21936291
references.citation: Med Eng Phys. 2006 Nov;28(9):905-15
references.pmid: 16504565
references.citation: Disabil Rehabil. 2010;32(26):2237-43
references.pmid: 20528446
references.citation: J Biomech. 2007;40(11):2564-8
references.pmid: 17270191
references.citation: J Strength Cond Res. 2010 Jan;24(1):8-16
references.pmid: 19996772
references.citation: Adapt Phys Activ Q. 2009 Oct;26(4):352-63
references.pmid: 19893072