Table_1_A latent profile analysis of subjective exercise experiences among physically vulnerable college students and psychiatric symptoms correlates during three phases of the COVID-19 pandemic in Wuhan, China.docx

IntroductionPhysical activity among college students since the COVID-19 pandemic was well studied; however, subjective exercise experience and the emotional response toward physical exercise received less attention.MethodsThe present study used latent profile analysis (LPA) to explore the latent class of subjective exercise experience among physically vulnerable college students who scored 59 points or less in tests under the National Student Physical Health Standard. Three non-duplicated samples at different stages of the COVID-19 pandemic were collected in March 2020 (N = 127), March 2021 (N = 118), and November 2021 (N = 206) respectively. Psychometrically validated scales, namely, Subjective Exercise Experiences Scale (SEES), Generalized Anxiety Disorder (GAD-7), and Patient Health Questionnaire (PHQ-9) were used to measure subjective exercise experience, anxiety symptoms, and depressive symptoms.Results and discussionLPA revealed a 3-class solution for the subjective exercise experience of physically unfit students, namely, the “negative experience group” (30.82%), the “fatigue group” (41.91%), and the “positive experience group” (27.27%). Multinomial regression showed that probable anxiety [odds ratio (OR) = 0.12] was associated with the overall negative exercise experience while probable depression (OR = 0.19) was associated with psychological fatigue. Women (OR = 0.496) were more likely to experience overall negative exercise experience, and the outbreak of the COVID- 19 (OR = 2.14) pandemic influenced the psychological distress of the subjective exercise experience compared with the other two phases in the post-COVID- 19 era. Our findings provided significant implications for physical education targeting university students that interventions should be tailored differently for three profiles of the subjective exercise experience.</p

Schiff Base Conjugated Carbon Nitride-Supported PdCoNi Nanoparticles for Enhanced Formic Acid Dehydrogenation

An effective and low-cost nanocatalyst is designed for formic acid (FA) dehydrogenation to boost practical applications. Herein, we report superior PdCoNi nanoparticles (NPs) supported on Schiff base conjugated carbon nitride, which exhibits excellent catalytic performance with a turnover frequency (TOF) of 1308 h–1 on FA decomposition to hydrogen at room temperature. The results show that the Schiff base groups grafted on the carbon nitride support contribute to providing abundant conjugated active sites for anchoring metal, leading to the formation of ultrafine and well-dispersed PdCoNi NPs (1.70 nm) with electron-rich Pd species, which are responsible for the outstanding catalytic activity. The conjugated Schiff base can also facilitate the O–H bond dissociation on FA, which further promotes the decomposition of FA. This low-cost and high-performance palladium-based catalyst is conducive to the development of composite catalysts on FA dehydrogenation