تازه های تحقیق
عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Background & Purpose: Similarities of barefoot and minimalist running received wide attentions in last two decades. The purpose of this study was determination of barefoot and minimalist running by classification of subjects using mechanical energy and PCA method.
Methodology: 99 subjects (47 men and 52 women) ran at 3 and 5 m/s in barefoot, minimalist and regular sport shoe conditions. Mechanical energy of pelvic, thigh, shank and foot calculated in stance phase of running. PCs extracted from PCA that covered 95% variance of original data choose for discriminant analysis. A cross validation technique used to determine the accuracy of classification.
Results: The results of this study showed that accuracy of model in discrimination between barefoot and running with regular shoe was 81.8%. Accuracy of discriminant analysis for barefoot-minimalist and minimalist-running shoe was 46% and 70.7% respectively.
Conclusion: PCA and classification techniques together could be used to determination similarities and differences of different gait conditions. In addition, minimalist running could mimic barefoot running properly.
##Hryvniak D, Dicharry J, Wilder R. 2014. Barefoot running survey: Evidence from the field. Journal of Sport and Health Science. 3(2):131-136.##Rao G, Chambon N, Guéguen N, Berton E, Delattre N. 2015. Does wearing shoes affect your biomechanical efficiency?. Journal of biomechanics. 48(3):413-417.##Squadrone R, Gallozzi C. 2009. Biomechanical and physiological comparison of barefoot and two shod conditions in experienced barefoot runners. Journal of Sports Medicine and Physical Fitness, 49(1):6-13.##Lieberman DE, Venkadesan M, Werbel WA, Daoud AI, D’Andrea S, Davis IS, Mang’Eni RO, Pitsiladis Y. 2010. Foot strike patterns and collision forces in habitually barefoot versus shod runners. Nature. 463(7280):531-535.##Rothschild C. 2012. Running barefoot or in minimalist shoes: evidence or conjecture?. Strength & Conditioning Journal. 34(2):8-17.##Lieberman DE. 2012. What we can learn about running from barefoot running: an evolutionary medical perspective. Exercise and sport sciences reviews. 40(2):63-72.##Lohman EB, Sackiriyas KSB, Swen, RW. 2011. A comparison of the spatiotemporal parameters, kinematics, and biomechanics between shod, unshod, and minimally supported running as compared to walking. Physical Therapy in Sport. 12(4):151-163.##Yan AF, Sinclair PJ, Hiller C, Wegener C, Smith RM. 2013. Impact attenuation during weight bearing activities in barefoot vs. shod conditions: a systematic review. Gait & posture. 38(2):175-186.##Butler RJ, Hamill J, Davis I. 2007. Effect of footwear on high and low arched runners’ mechanics during a prolonged run. Gait & posture. 26(2):219-225.##Nigg BM. 2010. Biomechanics of sport shoes. University of Calgary.##Miller EE, Whitcome KK, Lieberman DE, Norton HL, Dyer RE. 2014. The effect of minimal shoes on arch structure and intrinsic foot muscle strength. Journal of Sport and Health Science. 3(2):74-85.##Hein T, Grau S. 2014. Can minimal running shoes imitate barefoot heel-toe running patterns? A comparison of lower leg kinematics. Journal of Sport and Health Science. 3(2):67-73.##Larson P. 2014. Comparison of foot strike patterns of barefoot and minimally shod runners in a recreational road race. Journal of Sport and Health Science. 3(2):137-142.##Chau T. 2001. A review of analytical techniques for gait data. Part 1: fuzzy, statistical and fractal methods. Gait & Posture. 13(1):49-66.##Deluzio KJ, Astephen JL. 2007. Biomechanical features of gait waveform data associated with knee osteoarthritis: an application of principal component analysis. Gait & posture. 25(1):86-93.##Muniz AMS, Nadal J. 2009. Application of principal component analysis in vertical ground reaction force to discriminate normal and abnormal gait. Gait & posture. 29(1):31-35.##Federolf P, Tecante K, Nigg BM. 2012. A holistic approach to study the temporal variability in gait. Journal of biomechanics. 45(7):1127-1132.##Pohl MB, Mullineaux DR, Milner CE, Hamill J, Davis IS. 2008. Biomechanical predictors of retrospective tibial stress fractures in runners. Journal of biomechanics. 41(6):1160-1165.##Sadeghi H, Prince F, Zabjek KF, Sadeghi S, Labelle H. 2002. Knee flexors/extensors in gait of elderly and young able-bodied men (II). The knee. 9(1):55-63.##Miller CA, Verstraete MC. 1999. A mechanical energy analysis of gait initiation. Gait & posture. 9(3):158-166.##Winter DA. 2009. Biomechanics and motor control of human movement. John Wiley & Sons.##Guo LY, Su FC, Wu HW, An KN. 2003. Mechanical energy and power flow of the upper extremity in manual wheelchair propulsion. Clinical Biomechanics. 18(2):106-114.##Chapman AE, Caldwell GE. 1983. Factors determining changes in lower limb energy during swing in treadmill running. Journal of biomechanics. 16(1):69-77.##Thompson MA, Gutmann A, Seegmiller J, McGowan CP. 2014. The effect of stride length on the dynamics of barefoot and shod running. Journal of biomechanics. 47(11):2745-2750.##