Analysis of vibrations transmitted to the feet of a wheelchair user.

: The aim of the study was to quantitatively evaluate the vibrations received on the wheelchair footrest and to determine whether wheelchair users are at risk of vibration-white foot. This assessment was made using the ISO 2631 standard. : The measurements were taken on the footrest of a universal wheelchair.

Experimental study of the influence of using polyurethane cushion to reduce vibration received by a wheelchair user.

Purpose: The aim of this experimental study was to compare the ability of polyurethane cushions of three arbitrary selected thicknesses to minimize vibrations transmitted from the wheelchair to its user.

Methods: Measurements were made during passive motion on five different surfaces often found in public spaces. Two tests were carried out during the measurements.

Preliminary assessment of vibration impacts generated by the public transport systems on pregnant women based on subjective reactions.

Purpose: Research efforts summarised in this study were a part of preliminary investigation to evaluate the impact of pregnant women's exposure to vibrations generated by public transport system when using.

Methods: The assessment of the problem and discomfort for pregnant women, caused by the public transportation is based on a questionnaire including questions relating to the women's subjective feelings on well-being or discomfort when exposed to vibration during the ride in passenger cars or when using means of public transport. In the second stage of investigation, vibrations transmitted onto a sitting person during the tram or car ride were measured.