WalkingChromosome WalkingBiomechanical PhenomenaGait Disorders, NeurologicLocomotionEnvironment DesignOrthotic DevicesFootExercise TestAnkle JointPostural BalanceWalkersIntermittent ClaudicationAnkleTransportationCanesExercise TherapyLegElectromyographyAccelerationShoesMobility LimitationRunningWeight-BearingMotor ActivityCrutchesArtificial LimbsMuscle, SkeletalMonitoring, AmbulatoryBicyclingLower ExtremityTime FactorsExerciseEnergy MetabolismKnee JointExercise ToleranceResidence CharacteristicsRoboticsPostureRecovery of FunctionActivities of Daily LivingTreatment OutcomeDiagnostic Tests, RoutineHip JointDisability EvaluationRange of Motion, ArticularQuestionnairesParesisAmputeesProspective StudiesAccidental FallsPeripheral Arterial DiseaseReproducibility of ResultsHipMuscle StrengthPhysical ExertionSelf-Help DevicesExtremitiesOxygen ConsumptionRecreationVideo RecordingAnalysis of VarianceHemiplegiaCross-Sectional StudiesKneeFollow-Up StudiesSafetyPhysical FitnessAdaptation, PhysiologicalCerebral PalsySpinal Cord InjuriesGravitationPhysical Therapy ModalitiesPeripheral Vascular DiseasesStrokeSensitivity and SpecificityMovementProprioceptionOrthopedic EquipmentFoot OrthosesPsychomotor PerformanceQuality of LifeSeverity of Illness IndexCity PlanningMusculoskeletal Physiological PhenomenaLeisure Activities