Measuring Foam Cushioning Properties

NewsBot · Feb 9, 2016

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Blog post from Poron:
The Rule of Thumb for Measuring Foam Cushioning Properties in Footwear

Footwear designers and consumers alike often try to feel whether a foam will be comfortable underfoot by squeezing it between their thumb and forefinger
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At the PORON Comfort Solutions Center, we use a couple of test methods to measure a foam?s cushioning properties:
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NewsBot · Feb 17, 2016

“Behavior of provisional pressure-reducing materials in diabetic foot”
Manuel Pab?n-Carrasco et al
Journal of Tissue Viability; 12 February 2016

Highlights
•All different types of felts reduce pressure.
•BMI and physical activity influence differently on the loss of efficacy of the materials.
•Polyurethane provides the best resolution according to the results of this study. (p = 0,004)” (Loss of efficacy 0,42 ?0,17).
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Objective
The main aim of this work is to assess the behavior of felts of latex foam, wool, wool on latex and 10 mm polyurethane foam as provisional pressure-reducing materials compared to foot hyperpressures. Secondary aims are to determine how Body Mass Index and Physical activity impact the pressure-reducing capacity of these materials. The research hypothesis sets out that there are statistically significant differences between the pressure-reducing capacity of the different materials and that they are impacted by Body Mass Index and Physical Activity.

Research Design and Methods
This study was descriptive, correlational and experimental. The sample was comprised of 32 subjects, 64 feet aged between 19 and 76 years, with plantar hyperpressures of different etiologies. The pressure was assessed using the platform pressures.

Results
The results revealed an effective reduction of pressures for all materials; this was more durable for polyurethane.

Conclusions
It was concluded that pressure-reducing materials are effective on the reduction of hyperpressures but there are differences between them as to duration of the effect.
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