Case Study: Effect of Handrim Diameter on Performance in a Paralympic Wheelchair Athlete

Autor/inn/en	Costa, Gabriel Brizuela; Rubio, Miguel Polo; Belloch, Salvador Llana; Soriano, Pedro Perez
Titel	Case Study: Effect of Handrim Diameter on Performance in a Paralympic Wheelchair Athlete
Quelle	In: Adapted Physical Activity Quarterly, 26 (2009) 4, S.352-363 (12 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0736-5829
Schlagwörter	Case Studies; Athletes; Assistive Technology; Performance; Neurological Impairments; Motion; Psychomotor Skills; Metabolism; Biomechanics; Physiology; Foreign Countries; Spain (Valencia) + Suchen Sie Ihr Suchwort? Case study; Fallstudie; Case Study; Athlet; Achievement; Leistung; Neurodegenerative Erkrankung; Bewegungsablauf; Psychomotorische Aktivität; Stoffwechsel; Biomechanik; Physiologie; Ausland
Abstract	This study, with a top T-52 class athlete, determines the relationship between stroke frequency (SF) and push time (PT) and wheelchair velocity (Wv) using different handrim diameters (HD) and the effect of different HDs on the athlete's heart rate (HR) and blood lactate (LACT) at competition speeds. Wv shows a linear-direct relationship with SF but a linear-inverse relationship with PT (p less than 0.001 in both cases). Using bigger handrims (0.37 m instead of 0.36 m), SF increases 6%, while PT decreases 27% (at 24 Km[middle dot]h[superscript -1]). HR (p less than 0.0001) increases with Wv and is also affected by HD with differences between the 0.34 m-0.36 m handrim group (lower values) and the 0.37 m handrim (higher values). Significant interaction (p less than 0.0001) is identified between HD and Wv. LACT results seem to follow the same direction as HR. This methodology helped the athlete to choose the optimum HD, and his achievements (some world records) indicate that HD optimization could be highly profitable in sport terms. (Contains 1 table and 3 figures.) (As Provided).
Anmerkungen	Human Kinetics, Inc. 1607 North Market Street, Champaign, IL 61820. Tel: 800-474-4457; Fax: 217-351-1549; e-mail: info@hkusa.com; Web site: http://www.humankinetics.com
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10