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This pilot study investigated the effects of insoles on marathon runners' performance. Using instruments like Pedar and Rs scan, the study analyzed pressure distribution, stability, and balance. Subjects ran on a treadmill with insoles and shoes for data collection. Results showed variations in peak pressure and force, dynamic stability differences between insole and shoe, and minimal impact on static stability. The study suggests potential benefits of insoles in improving performance.
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Insole for Marathoners pilot study-for normal subjects- Chao-Yi, Zheng Sai-Wei, Yang
outline • Instruments • Method and procedure • Results • Conclusion
Pedar • Center of pressure • Pressure distribution • Rs scan • Static balance
Absorption and dynamic stability • Instrument: Pedar system, treadmill • Condition: insole and shoe, random, each for three trials • Procedure: • Subject ran on the treadmill, the speed gradually increased to 3.35 m/s • When subject get with that speed, recorded data for 20 steps • Variables: • Standard deviation of Cop X • Peak pressure and maximal force at heel (m, l), midfoot (m, l), mp (1,2,345), toe (1, 2, 345)
Static balance: • Instrument: Rs scan • Condition: (bare, shoe, insole) X (right, left) , each for five trials • Procedure: • To use tandem gait stand for 30s for each condition • Variable: • Cop X, Cop Y, Cop total travel way, elliptical area
results Absorption
1: insole Left foot 3: shoe Left foot 2: insole Right foot 4: shoe Right foot
results Support and stability
Conclusion • Pressure distribution: • Maximum force M2 :right foot wearing insole may lower than wearing shoe • Peak pressure M345 :it may has different between two legs with insole;right insole and left shoe may have different • Dynamic stability:it may has different between these two conditions, the SD value in insole is bigger than insole but the bias is very small(0.03) • Static stability: it seems has no different between wearing insole and without insole