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The effects of high plantar pressures on musculoskeletal disorders in obesity

Introduction. Relationship between obesity plantar pressures and musculoskeletal disordersPlantar pressureDistribution of forces at plantar surface of the foot.Cause by:Weight force - BodyGround reaction force. Introduction cont'd. Musculoskeletal disorder Disruption to structuresBones,Muscles JointsBursaLigamentsTendonsExample of disorders:Plantar fasciitis Heel spursTendonitisRheumatoid arthritisFlat Feet.

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The effects of high plantar pressures on musculoskeletal disorders in obesity

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    1. The effects of high plantar pressures on musculoskeletal disorders in obesity Georgia State University KH 7510 – Biomechanics Dr. Mark Geil Fredrick Agyekum

    2. Introduction Relationship between obesity plantar pressures and musculoskeletal disorders Plantar pressure Distribution of forces at plantar surface of the foot. Cause by: Weight force - Body Ground reaction force

    3. Introduction cont’d Musculoskeletal disorder Disruption to structures Bones, Muscles Joints Bursa Ligaments Tendons Example of disorders: Plantar fasciitis Heel spurs Tendonitis Rheumatoid arthritis Flat Feet

    4. Literature Review Anandacoomarasamy et al, reviewed article concluded that “obesity is associated with a number of musculoskeletal conditions and is responsible for significant disability and impaired quality of life” (p. 217) Dowling et al, researched plantar pressure of children and founded that obese children significantly displayed greater peak contact area and mean peak force/pressure during static and dynamic phases (p.848). Mickle et al research showed that during walking overweight/obese children had significantly larger forces on the plantar surface of the total foot (p.183).

    5. Literature References Anandacoomarasamy, A., Caterson, I., Sambrook, P., Fransen, M., & March, L. (2008). The impact of obesity on the musculoskeletal system. International Journal of Obesity. 32(2), 211-222. Dowling, A. M., Steele, J. R., & Baur, L. A. (2001). Does obesity influence foot structure and plantar pressure pattern in prepubescent children? International Journal of Obesity. 25, 845-852. Hills, A. P., Hennnig, E.M., McDonald, M., & Bar-Or, O. (2001). Plantar pressure difference between obese and non obese adults: a biomechanical analysis. International Journal of Obesity. 25, 1674-1679. Gravante, G., Russo, G., Pomara, F., & Ridola, C. (2003). Comparison of ground reaction forces between obese and control young adults during quiet standing on a baropodometric platform. Clinical Biomechanic.18, 780-782. Mickle, K. J., Steele, J. R., & Munro, B. J. (2006) Does excess mass affect plantar pressure in young children? International Journal of Pediatric Obesity. 1(3), 183-188.

    6. Objective The aim of this research is to study high plantar pressure cause by excess mass (obesity) and its relationship with some musculoskeletal disorders.

    7. Hypothesis As higher plantar pressures increase the risk of developing some musculoskeletal disorders increases proportional.

    8. Experiment Methods Participants Male and female college students Age between 17-25 years 20 Overweight/Obese subjects BMI 25.0 kg/m2 – 29.9 kg/m2 – Overweight BMI 30.0 + kg/m2 - Obese 20 Non-overweight/obese subjects BMI 18.5 – 24.9 kg/m2 - Normal

    9. Experiment Methods cont’d Materials Weight scale: Weight (kg) Meter Stick: Height (meters) Force Platform Force (Newton) Pressures (Pascal) Pa or N/cm2

    10. Experiment Methods cont’d Procedure Measure the weight and height Calculate the BMI of each participant Static Testing Subjects will standing still on the platform with both foot 5 trials Barefoot and 5 trials with shoes Record forces and pressures the regions of the left and right foot Dynamic Testing Subjects will walk on the force platform Each subject will strike the platform one foot at a time 5 trials Barefoot and 5 trials with shoes Record forces and pressures the regions of the left and right foot

    11. Statistical Analysis Analysis Region of the foot to be compared Heel :M01 Mid-Foot: M02 Forefoot: M03 Hallux: M04 Digits 2-5: M05 Variables Left and right foot regions of overweight/obese and non-overweight/obese compared Limitations BMI Overall limb movements

    12. Expected Results Dowling et al, stated that “As force is equal to the product of mass and acceleration this increase in static peak force displayed by obese subjects, with their larger body mass was expected” (p. 1518). Test conducted should show potential pressures: Overweight/obese 40+ 15 N/cm2 Non-overweight/obese 30+ 10 N/cm2

    13. Contributions Prevention of Disorders Weight management Medical treatments

    14. Please any questions?

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