简介：这两个表达法都可表示特定的“其余的人或物”。那么它们之间有什么相同和不同之处呢?

简介：动作描述：跪于垫上，保持双脚平行，与髋同宽。臀部坐于脚后跟，身体前俯，双臂于地面向前伸展。

简介：Background:Animpactofregularphysicalactivity(RPA)ontheabdominalmusclesmaybesignificantwhencomparingvarioussymptomaticgroups.However,thereislackcomprehensiveinformationinthisfield.Theobjectiveofthisstudywastoassessthelateralabdominalwallatrestandduringabdominaldrawing-inmanoeuvreinadolescentphysicallyactivegirlsindifferentbodypositions.Methods:Onehundredandforty-fourfemalestudents,13–17yearsofage,participatedinthestudy.Participantsweredividedinto2groupsbasedonaphysicalactivity(PA)statement.Measurementsofthethicknessoftheabdominalmusclesatrestandduringabdominaldrawing-inmanoeuvreweremadeinthesupineandstandingpositionsbyultrasoundimaging.Results:Comparedtothecontrolgroup,activitiesoftheobliquusinternusandtransversusabdominismuscleswerehigherintheregularPAgroupby8.9%(95%CI:3.1–14.7)and36%(95%CI:19.1–47.5),respectively.IntheRPAgroup,thetransversusabdominispreferentialactivationratiowasgreaterby0.03(95%CI:0.01–0.04),andthecontractionratiowasgreaterbyameanvalueof0.35(95%CI:0.18–0.46).Conclusion:RPAdoesnothaveanyeffectontherestingthicknessoftheabdominalmusclesinthesupineandstandingpositions.GirlsperformingRPAhaveagreaterabilitytoperformanindependentactivationandgreatercontractionsofthetransversusabdominis.