Mayrhuber, L. (Laura) (2021) Scapula kinematics in wheelchair propulsion with a tennis racket. thesis, Human Movement Sciences.
Full text available on request.Abstract
Introduction: The interference of the racket with the hand/rim (de)coupling possibly leads to negative changes in propulsion technique and scapula kinematics compared to the non-racket condition. Aims: To establish if wheelchair propulsion with a tennis racket, while using a novel hand rim, leads to 1) change of propulsion technique variables; 2) a smaller range of motion (ROM) for the scapulothoracic angles when compared to wheelchair propulsion without a tennis racket. Methods: Ten able-bodied participants, who were novices in wheelchair propulsion, received a pre-test (3x4min), 3 training sessions (each 3x4min) and post-test (3x4min) on a wheelchair ergometer at a velocity of 1.11 m/s. The differences in propulsion technique and scapula kinematics were assessed between the racket/non-racket condition during the post-test. Results: A significant difference between the racket and non-racket condition for the propulsion technique variables push time, contact angle, mean power output, and mean force per push was observed. The protraction/retraction ROM and peak posterior tilt during the propulsion cycle was significantly smaller in the racket condition. During the push phase, the anterior/posterior ROM and peak posterior tilt were significantly smaller and the peak lateral tilt greater with a racket. Conclusion: Wheelchair propulsion with a tennis racket, compared to propulsion without a racket, leads to shorter pushes with a smaller contact angle and consequently a smaller scapulothoracic ROM. However, generating the necessary power output during a shorter push and smaller ROM to keep a constant speed at both sides, accelerates muscle fatigue and can possibly lead to shoulder injuries. Keywords: Wheelchair tennis, scapula kinematics, upper-body kinematics, propulsion technique, manual wheelchair propulsion
| Item Type: | Thesis (UNSPECIFIED) |
|---|---|
| Supervisor name: | Vegter, dr. R.J.K. and Rietveld, T. |
| Faculty: | Medical Sciences |
| Date Deposited: | 13 May 2022 12:44 |
| Last Modified: | 13 May 2022 12:44 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/3308 |
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