Consistency of Affective Valence Across Bouts of Muscle-Strengthening and Aerobic Exercise in College Students

Abstract

Discriminant analysis was run to identify discriminant functions (DF) from the MCs and examine how accurately the MCs could differentiate or classify participants with different exercise stages. Further, kappa was computed to assess classification accuracy as well for correcting chance agreement. RESULTS:The BPOC was the only identified significant DF among the six MCs with its DF coefficient = .83 and discriminant loading = .80, and the significance tests showed Λ = .42, ꭓ 2 (18) = 146.88, and p < .001. The eigenvalue of this DF = 1.16, and its % of variance = 91.7, accounting for 91.7% of the discriminating ability of the MCs. As for classification accuracy, 63.0%, 22.2%, 71.0%, 69.5%, and 61.7% of participants were correctly classified in S2, S3, S4, S5, and all exercise stages, respectively. Additionally, a kappa value of .45 confirmed a moderate accuracy in classification. CONCLUSIONS:The BPOC is the only significant DF of the MCs and occupies 91.7% of the total discriminating ability in differentiating the exercise levels. It makes sense that acting to exercise is the major dimension differentiating exercise levels. The six MCs, as a whole, demonstrate a moderate classification function, with 61.7% of overall classification accuracy.