Biomechanical Characteristics in Runners with Flexible Flatfoot and Effects of Neuromuscular Training for Related Running Injuries
| Autor: | Fu-Hsiang, Chang, 張富翔 |
|---|---|
| Rok vydání: | 2015 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 103 Background and Purpose: Biomechanical stresses in subjects with flexible flatfoot (FFF) during running and other loaded activities with high repetition easily cause significant injuries to the musculoskeletal system. Literature reflects that excessive rearfoot pronation would cause increased lower extremity internal rotation and pelvic anterior tilt, and also lead to excessive knee valgus, hip adduction, pelvic instability in dynamic movements. These abnormal skeletal malalignment causes poor force transfer between the foot and spine in functional movements and accumulated tissue stresses in the lower extremity and lumbar region over time leading to the development of lower extremity injuries such as patellofemoral pain syndrome, shin splints, plantar fasciitis and low back pain. Till now, there have been no empirical evidence focusing on the lower extremity chain reaction in functional movements. To offset the malalignment associated with FFF it is important to reestablish the kinetic control and maintain joint stability from the foot to spine and integrate them into functional activities of daily living. However, no studies have investigated the effects of neuromuscular control exercise on lower extremity kinetic control and symptom improvement; especially in runners with FFF. Purposes: 1) To investigate the biomechanical characteristics between runners with and without FFF and 2) To examine whether neuromuscular training from the foot to spine is beneficial in runners with FFF and lower extremity or low back pain. Methods: The first part of this study was a cross sectional, matched-control design. We recruited twenty runners with FFF and associated lower extremity or low back pain, and fifteen age, gender, and BMI matched healthy subjects with normal foot type as the comparison group. After the baseline assessment of physical characteristics, the subjects were tested with a motion capture system and surface electromyography to collect kinematic and muscle activation data of the lower extremity during level walking and single leg squatting. The second part of this study was a one group pretest-posttest quasi-experimental design. 17 Subjects with FFF and running related lower extremity pain in the first part of study received neuromuscular training from the foot to spine. Outcome was evaluated by visual analog scale (VAS) for pain and lower extremity functional scale (LEFS), as well as kinematic and electromyography changes after 6 weeks of training. Results: There was no significant difference on the kinematics data, but muscle activation of tibialis anterior and biceps femoris was significantly higher during both functional tasks (5%, p |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|