Effects of rehabilitation period with elastic training on frequency spectrum of foot forces in females with low back pain

 Aims and background:  The aim of this study was to investigate the effects of rehabilitation period with elastic training on frequency spectrum of foot forces in females with low back pain during walking. Materials and methods: The sample of this study included 20 girls with low back pain.The experimental group did elastic gait training for 6 weeks. Peak plantar forces during both pre and post-test were recorded by a foot scan system (sample rate: 300 Hz). Findings: Results of this study demonstrated that the frequency variable with the power 99.5 % in the Toe (P=0.022), Second to 5th Fingers (p=0.002), First metatarsal (p<0.001), Second metatarsal (p=0.014), Third metatarsal (p<0.001), Mid foot (p=0.021),  Lateral heel (p=0.019), and also the number of essential harmonics in the Toe (p=0.006), Second to 5th  fingers (p<0.001), First metatarsal (p<0.001),  Second metatarsal (p=0.019), Third metatarsal (p=0.005), Fourth metatarsal (p=0.024), fifth metatarsal (p=0.047), and Inside The Foot (p=0.040) areas demonstrated greater values during post-test than that in the pre-test. Also, other findings of the present study did not show any significant difference during the post-test compared to the pre-test during elastic training. Conclusion: In general, the results of the present study showed that the elastic gait training causes an increase in the frequency with the power 99.5 % and the number of essential harmonics in different areas of the foot.