Purpose: Classification is a defining factor for competition in wheelchair sports, but it is a delicate and time-consuming process with often questionable validity. New inertial sensor-based measurement methods applied in match play and field tests allow for more precise and objective estimates of the impairment effect on wheelchair-mobility performance. The aim of the present research was to evaluate whether these measures could offer an alternative point of view for classification. Methods: Six standard wheelchair-mobility performance outcomes of different classification groups were measured in match play (n = 29), as well as best possible performance in a field test (n = 47). Results: In match results, a clear relationship between classification and performance level is shown, with increased performance outcomes in each adjacent higher-classification group. Three outcomes differed significantly between the low- and mid-classified groups, and 1, between the mid- and high-classified groups. In best performance (field test), there was a split between the low- and mid-classified groups (5 out of 6 outcomes differed significantly) but hardly any difference between the mid- and high-classified groups. This observed split was confirmed by cluster analysis, revealing the existence of only 2 performance-based clusters. Conclusions: The use of inertial sensor technology to obtain objective measures of wheelchair-mobility performance, combined with a standardized field test, produced alternative views for evidence-based classification. The results of this approach provide arguments for a reduced number of classes in wheelchair basketball. Future use of inertial sensors in match play and field testing could enhance evaluation of classification guidelines, as well as individual athlete performance. DOI: https://doi.org/10.1123/ijspp.2017-0326 LinkedIn: https://www.linkedin.com/in/rienkvdslikke/ https://www.linkedin.com/in/moniqueberger/ https://www.linkedin.com/in/annemarie-de-witte-9582b154/
MULTIFILE
Purpose: To provide insight on the effect of wheelchair settings on wheelchair mobility performance (WMP). Methods: Twenty elite wheelchair basketball athletes of low (n = 10) and high classification (n = 10) were tested in a wheelchair-basketball-directed field test. Athletes performed the test in their own wheelchairs, which were modified for 5 additional conditions regarding seat height (high–low), mass (central–distributed), and grip. The previously developed inertial-sensor-based WMP monitor was used to extract wheelchair kinematics in all conditions. Results: Adding mass showed most effect on WMP, with a reduced average acceleration across all activities. Once distributed, additional mass also reduced maximal rotational speed and rotational acceleration. Elevating seat height had an effect on several performance aspects in sprinting and turning, whereas lowering seat height influenced performance minimally. Increased rim grip did not alter performance. No differences in response were evident between low- and high-classified athletes. Conclusions: The WMP monitor showed sensitivity to detect performance differences due to the small changes in wheelchair configuration. Distributed additional mass had the most effect on WMP, whereas additional grip had the least effect of conditions tested. Performance effects appear similar for both low- and high-classified athletes. Athletes, coaches, and wheelchair experts are provided with insight into the performance effect of key wheelchair settings, and they are offered a proven sensitive method to apply in sport practice, in their search for the best wheelchair–athlete combination. https://doi.org/10.1123/ijspp.2017-0641 LinkedIn: https://www.linkedin.com/in/rienkvdslikke/ https://www.linkedin.com/in/annemarie-de-witte-9582b154/ https://www.linkedin.com/in/moniqueberger/
MULTIFILE
Objective This study aims to identify determinants of dietary behaviour in wheelchair users with spinal cord injury or lower limb amputation, from the perspectives of both wheelchair users and rehabilitation professionals. The findings should contribute to the field of health promotion programs for wheelchair users. Methods Five focus groups were held with wheelchair users (n = 25), and two with rehabilitation professionals (n = 11). A thematic approach was used for data analysis in which the determinants were categorized using an integrated International Classification of Functioning, Disability and Health and Attitude, Social influence and self-Efficacy model. Results Reported personal factors influencing dietary behaviour in wheelchair users were knowledge, boredom, fatigue, stage of life, habits, appetite, self-control, multiple lifestyle problems, intrinsic motivation, goal setting, monitoring, risk perception, positive experiences, suffering, action planning, health condition, function impairments, attitude and self-efficacy. Reported environmental factors influencing dietary behaviour in wheelchair users were unadjusted kitchens, monitoring difficulties, eating out, costs, unfavourable food supply, nutrition education/counselling, access to simple healthy recipes, eating together, cooking for others, and awareness and support of family and friends. Conclusions Important modifiable determinants of dietary behaviour in wheelchair users that might be influenced in lifestyle interventions are knowledge, fatigue, habits, self-control, intrinsic motivation, risk perception, attitude and self-efficacy. It is recommended to involve relatives, since they appear to significantly influence dietary behaviour.
De prestatie in rolstoelsporten wordt voor een groot deel bepaald door de ‘Wheelchair Mobility Performance’ (WMP), de prestatiemaat voor de atleet-rolstoel combinatie. Binnen het project ‘de perfecte sportrolstoel’ is een methode ontwikkeld ‘de Wheelchair Mobility Performance Monitor’ (WMPM) om mobility performance te meten en uit te drukken in een aantal objectief goed te kwantificeren uitkomstmaten zoals snelheid, versnelling en wendbaarheid. Deze maten geven inzicht in de relatie tussen atleet, rolstoel en sport. Door middel van de WMPM is het mogelijk inzicht te verkrijgen in de fysieke eisen die in rolstoelsport gesteld worden, feedback te geven aan atleten en coaches, het evalueren van training en wedstrijden en het kan rolstoelexperts ondersteunen in het optimaliseren van de rolstoel. Binnen het RAAK-project is de WMPM ontwikkeld en ingezet als onderzoekstool bij verschillende rolstoelsporten. De WMPM biedt echter ook goede kansen voor het gebruik door coaches in de beroepspraktijk. Echter, de WMPM is nog niet eenvoudig toepasbaar voor zelfstandig gebruik door coaches en atleten voor het continue monitoren van prestaties. Met deze aanvraag willen we de implementatie van de WMPM in de beroepspraktijk faciliteren, door het verder ontwikkelen van het systeem naar een praktijkapplicatie en door NL-team coaches en embedded scientists in de rolstoelsporten tennis en basketbal op weg te helpen in het gebruik. Daarbij zal er zowel aandacht zijn voor de technische vervolmaking, maar vooral ook voor de implementatie van het systeem in de sportpraktijk. Samen met coaches, atleten en onderzoekers zal een live feedback tool naar een voor de praktijk toegankelijk platform worden omgezet, zodat deze direct inzetbaar is in de voorbereiding op de Paralympische spelen van 2020 en verder. Hierbij zullen onderzoekers en studenten van meerdere opleidingen als ICT en media en mechatronica betrokken worden.
