Full text
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| Author(s): |
Roberto Casanova Dinato
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Medicina (FM/SBD) |
| Defense date: | 2013-05-09 |
| Examining board members: |
Isabel de Camargo Neves Sacco;
Silvia Maria Amado João;
Paulo Roberto Pereira Santiago
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| Advisor: | Isabel de Camargo Neves Sacco |
| Abstract | |
This study aimed to investigate the relationship between the perception of comfort and impact-related biomechanical parameters (plantar pressure and ground reaction force) during running with four different types of cushioning technology in running shoes.Twenty-two men, recreational runners (18 to 45 years) ran 12 km/hwith running footwear with four different cushioning systems: Gel, Air, Adiprene e EVA (Ethyl Vinyl Acetate) com various densities. Outcome measures included nine items related to perception of comfort,five variables of ground reaction force and nine of plantar pressure that were evaluated during running. Five biomechanical variables related to ground reaction force were acquired with an AMTI force plate in the laboratory environment. Nine variables related to plantar pressure were acquired by the PedarX system instrumented insoles on a running track.The 14 biomechanical variables and the nine items of comfort were compared amongfootwears using repeated measure ANOVAs. Pearson correlation coefficients were calculated to investigate the relationship between the perceptions of comfort and the biomechanical variables for all the footwear. Step-wise regression analyses were employed to determine which group of the biomechanical variables could best predict general footwear comfortand perception of cushioning in the rearfoot and forefoot region of each evaluated footwear.Correlation analysis made between the general comfort and biomechanical variables for the four types of shoesshowed between low and moderate correlation coefficients,although not significant. Regression analysis revealed that 56% of the perceived general comfort can be explained by the variables push-off rate and pressure integral over the forefoot (p=0.015) and that 33% of the cushioning perception over the forefoot can be explained by second peak force and push-off rate (p=0.016). Thus, in general, one cannot predict the overall comfort and cushioning perception of a running shoe studied through impact and plantar pressure received, since only one of the four technologies studied showed this behavior prediction (AU) | |
| FAPESP's process: | 10/14044-1 - Influence of the sport shoe construction in the lower limbs biomechanics during running. |
| Grantee: | Roberto Casanova Dinato |
| Support Opportunities: | Scholarships in Brazil - Master |