The aim of this study was to examine how usage of mobile devices while simultaneously walking affects walking characteristics and texting performance of normal weight (NW) and obese (OB) individuals. Thirty-two OB (body mass index [BMI] = 34.4) and NW (BMI = 22.7) adults performed two 60-s walking trials at three-step frequencies along a rectangular walkway in two conditions (No Texting and Texting). Dual-task cost as well as unadjusted spatial and temporal gait characteristics were measured. Dual-task costs for the gait parameters as well as texting performance were not different between the groups, except for the lateral step variability showing a larger variability at the preferred frequency in OB individuals. For the unadjusted variables, OB exhibited longer double support, longer stance time, and lower turn velocity compared with NW. Overall, the results highlight a similar dual-task cost for the OB individuals compared with the NW individuals, in spite of underlying differences in gait mechanics.

这项研究的目的是研究在同时行走的同时使用移动设备如何影响正常体重（NW）和肥胖（OB）个体的行走特性和发短信性能。32名成人（体重指数[BMI] = 34.4）和西北（BMI = 22.7）成年人在两种情况下（无短信和短信）以矩形步道以三步频率进行了两次60秒钟的步行试验。测量了双重任务成本以及未经调整的空间和时间步态特征。步态参数和发短信性能的双重任务成本在两组之间没有差异，除了横向步长变异性在OB个人的首选频率下显示出较大的变异性。对于未调整的变量，与NW相比，OB表现出更长的双支撑，更长的站立时间和更低的转弯速度。总体，