11 lines (10 with data), 249 Bytes

AnyFolder MomentMeasure={
  AnyFolder Right={
    AnyFolder &Side=...HumanModel.Right;
    #include "..\..\Leg\LegMoments.any"

  };
  AnyFolder Left={
    AnyFolder &Side=...HumanModel.Left;
    #include "..\..\Leg\LegMoments.any"
  };
};