“…Several scientific studies have investigated the impact of unstable footwear (shoe with a rocker sole) on biomechanical objective measures during walking so far. These studies support the general concept that unstable footwear have positive effects on gait kinematic, kinetic, and muscular activity (Demura and Demura, 2012;Hutchins et al, 2009;Nigg et al, 2012Nigg et al, , 2006Romkes et al, 2006;Sobhani et al, 2013;Stewart et al, 2007;Taniguchi et al, 2012). With regard to standing, previous studies in the laboratory settings commonly evaluated the effects of unstable footwear on subjective and objective measures, including perceived instability, center of pressure (CoP) excursion, plantar pressure distribution, muscular activity, and physiological responses during maximum of 1-min standing in first use of unstable shoe (shoe with a rounded sole design in the anterioreposterior direction) (Buchecker et al, 2012;Plom et al, 2014;Stewart et al, 2007) or in before and after accommodation periods (use the unstable shoe for 2e10 weeks) (Nigg et al, 2006;Sousa et al, 2012;Landry et al, 2010).…”