Effects of stepping exercise with single-tooth sandals on medial longitudinal arch and sole surface temperature / 体力科学

Single-tooth sandals under new development have special material and shape characteristics. Exercises with single-tooth sandals can increase pressing stimulus on the soles of the feet, thereby suppressing a decline in medial longitudinal arch and elevating sole surface temperature. This study thus aimed to examine the effects of exercise with single-tooth sandals on medial longitudinal arch and sole surface temperature. Sixteen young adults (23 ± 5 years) participated in 20 min of stepping exercise on the spot. They randomly put on a regular normal sandal (N conditions) or a single-tooth sandal (Z conditions) on each left and right side. Before and after exercise, medial longitudinal arch and sole surface temperature were assessed by digital caliper and straightedge and thermography, respectively. No significant differences in baseline parameters were observed between N and Z conditions. After exercise, arch height and arch height ratio significantly reduced in N conditions, but not in Z conditions. Central sole surface temperature in Z conditions also increased significantly, and the changes in surface temperature were significantly higher in Z conditions than in N conditions. Therefore, these findings suggest that exercise with single-tooth sandals has a positive effect on a suppressing decline in medial longitudinal arch and an elevation in sole surface temperature.

Long Term Effect of Custom-Molded Foot Orthoses on Foot Pain and Balance in Children with Symptomatic Flexible Flat Feet

OBJECTIVE: To evaluate the long termeffect of custom-molded foot orthoses on foot pain and balance ability in children with symptomatic flexible flat feet after 1 year.METHOD: A total of 35 children over 6 year-old with flexible flat feet and foot pain for at least 6 months were recruited. Individual custom-molded rigid foot orthoses fabricated with the inverted orthotic technique was prescribed. Pain related parameters (pain sites, degree, and frequency) were obtained through questionnaires. Pain assessment was performed prior to application of the foot orthoses, and 1, 3, 6, 12 months after applying the orthoses. Balance ability was tested by computerized posturography. Such measures were evaluated prior to, 3 months, and 12 months after applying the foot orthoses. Additionally, the difference inbalance ability between barefoot and withfoot orthosesat 12 months was assessed to estimate carryover effect.RESULTS: 17 out of 35 children completed the study. Significant improvements were noted upto 12 months in pain parameters and balance ability. The carry over effect of the orthoses was confirmed.CONCLUSION: There were significant improvements offoot pain and balance ability in children with symptomatic flexible flat foot after wearing foot orthoses fabricated with the inverted orthotic technique over 1year period.