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ID
Source
Brief title
Health condition
Ageing, cycling, looking over shoulder, obstacle detection
Veroudering, fietsen, omkijken, obstakel detectie
Sponsors and support
TNO,
Fietsersbond
Intervention
Outcome measures
Primary outcome
The main study parameter of the cycling experiments is the van der Laan technology acceptance scale. This scale has two sub-scores: one for usefulness and one for satisfaction.
Secondary outcome
Secondary study parameters are the cycling speed and qualitative video observations, which together represent cycling behaviour. A speed measurement device is mounted to the rear wheel. From the video recordings on fixed locations on the road, the cycling behaviour such as looking over shoulder, manoeuvring, sway, and distance and time of manoeuvring and sway, is described.
Furthermore, from the semi-structured interview Perceived usefulness, Perceived ease of use, Subjective norm (opinion of others) and Identity are assessed to get a better understanding of the underlying considerations and reasoning of the older cyclist.
Background summary
Rationale: In the Netherlands, older cyclists cycle more and up to a higher age. Unfortunately this group is prone to injury due to a cycling accident. Some of these accidents are related to issues looking behind, anxious feelings due to unforeseen other road user interaction, or overlooking an obstacle on the road. To support older cyclists in such situations, supporting devices have been developed which are able to inform the cyclist well in advance of traffic from behind and or for obstacle on the road. The supporting devices have been tested in laboratory environments, but have not been evaluated or validated in real life situations.
Objective: The aim of this study is to assess the supporting function of the ‘Safe and aware’ bicycle, including the rear view assistant and obstacle detection, in a group of older cyclists in safe real life situations. The aim of this study is to analyse if these supporting devices fulfil the wishes and desires of older cyclists.
Study design: This study has a cross-sectional design, with one measurement sessions for assessing the cycling behaviour of older cyclists on a bicycle with and without the supporting devices.
Study population: 20 older subjects (>65 years old).
Intervention (if applicable): no intervention will be applied.
Main study parameters/endpoints: The main study parameter of the present experiment is the van der Laan scale. This measure represents the technology acceptance of the user and classifies the usefulness and satisfaction of the older cyclists experience. These sub-scores are used to evaluate how well the technology fulfils wishes and desires of, in this case, the older cyclist.
Nature and extent of the burden and risks associated with participation, benefit and group relatedness: The risks for the subjects are limited, since the cycling tasks represent functional and familiar movements and are performed within a safe, pre-designed and pre-directed environment. During the cycling tests the difficulty in task increases slowly and can be stopped, by the subject self or by a present therapist, at any time. A Failure Mode and Effect Analysis is performed to ensure there are no serious injury risks. In addition, the measurements used in this study are all non-invasive and involve no risks to the subjects in any way.
Participation of a subject in this experiment has no direct benefit for him/her, other than expanding knowledge about his or her cycling performance and aiding in development of sophisticated tools to improve bicycle safety.
Study objective
Rear-view assistance and obstacle detection are well accepted by older cyclists and support a more safe cycling behaviour
Study design
One measurement point;
Intervention
Control (1) and Rear-view assiatnce and Obstacle detection (2)
Inclusion criteria
1. Minimum age of 65 years
2. Body length between 170 and 195 cm (to be able to cycle on the bicycle)
3. Problems looking behind while cycling and remaining seated on saddle
4. Regular cycling experience (2-3 times per week 15 min);
5. The ability to cycle for 20 minutes continuously;
6. Adequate visual and aural functions to understand the experiments, follow instructions, and give feedback to the researchers.
Exclusion criteria
1. Serious visual impairments that limit normal road traffic participation.
2. Serious aural impairments. The subjects should be able to hear and understand instructions given in a loud voice;
3. History of bicycle falls resulting in serious injuries
Design
Recruitment
Followed up by the following (possibly more current) registration
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Other (possibly less up-to-date) registrations in this register
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In other registers
| Register | ID |
|---|---|
| NTR-new | NL5518 |
| NTR-old | NTR5645 |
| Other | : METC Twente P15-28 |