CHEST Journal · 1999 · 538 citations · 25 references
EducationKinesiologyPhysiologyExercise PhysiologyExercise TestingPhysical ActivityAerobic ExerciseExercise Tolerance AssessmentLikert Scale ConstructionPhysical FitnessFunctional Rating ScalesLikert ItemsLikert Scale DesignLikert Scale DevelopmentLikert ScalingPain Intensity Rating ScalesSelf-report ScalesSubjects
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Psychophysical bases of perceived exertion
Gunnar Borg · Medicine & Science in Sports & Exercise · 1982 · 16.4K citations
Optimizing the exercise protocol for cardiopulmonary assessment
Mark J. Buchfuhrer, James E. Hansen, Terry E. Robinson et al. · Journal of Applied Physiology · 1983 · 865 citations