Affective exercise experience as an emerging theoretical concept has great potential to provide a more nuanced understanding of individual factors that influence exercise behavior.However,concerning the Affective Exer...Affective exercise experience as an emerging theoretical concept has great potential to provide a more nuanced understanding of individual factors that influence exercise behavior.However,concerning the Affective Exercise Experiences(AFFEXX)questionnaire,it has not been examined yet whether the structural score of the AFFEXX is a useful index to predict physical activity(refers to any bodily movement produced by skeletal muscles that requires energy expenditure).Furthermore,there is currently a gap in knowledge regarding the psychological mechanisms that can explain the relationship between affective exercise experiences and the level of physical activity(PA).In order to adress these gaps in the literature,we conducted two studies among Chinese collge students that aimed(i)to investigated whether the total score of the three AFFEXX-C constructs(antecedent appraisals,core affective exercise experiences,and attraction-antipathy towards exercise)is a relaible indicator that can be utilized in research and pratical settings and(ii)to evalute the specific psychological mechanisms that can explain the relationship between affective exercise experience and PA.In Study 1,we recruited 801 voluntary Chinese college students for bifactor and correlational analyses.In Study 2,875 Chinese college students were enrolled to verify our findings from Study 1 and to explore the aforementioned mechanism.Results from the bifactor analyses supported our hypothesis that the total scores of the three AFFEXX-C constructs can be used among Chinese college students to establish a link with PA.Additionally,our results suggested that core affective exercise experiences and attraction-antipathy mediated the relationship between antecedent appraisals and the level of moderate-to-vigorous intensity PA.Therefore,measuring affective exercise experiences using the AFFEXX-C,specifically the total scores of each individual construct may be a useful approach to predict future PA levels.展开更多
AIM: To investigate the latent structure of an irritable bowel syndrome(IBS) symptom severity scale in a population of healthy adults.METHODS: The Birmingham IBS symptom questionnaire which consists of three symptom s...AIM: To investigate the latent structure of an irritable bowel syndrome(IBS) symptom severity scale in a population of healthy adults.METHODS: The Birmingham IBS symptom questionnaire which consists of three symptom specific scales(diarrhea,constipation,pain) was evaluated by meansof structural equation modeling.We compared the original 3-factor solution to a general factor model and a bifactor solution in a large internet sample of college students(n = 875).Statistical comparisons of competing models were conducted by means of χ2 difference tests.Regarding the evaluation of model fit,we examined the comparative fit index(CFI) and the Root Mean Square Error of Approximation(RMSEA).RESULTS: Results clearly favored a bifactor model of IBS symptom severity(CFI = 0.99,RMSEA = 0.05) which consisted of a strong general IBS somatization factor and three symptom specific factors(diarrhea,constipation,pain) based on the subscales of the Birmingham IBS symptom questionnaire.The fit indices of the competing one factor model(CFI = 0.85,RMSEA = 0.17) and three factor model(CFI = 0.97,RMSEA = 0.08) were clearly inferior.χ2 difference tests showed that the differences between the models were indeed significant in favor of the bifactor model(P < 0.001).Correlations of the four latent factors with measures of pain sensitivity,somatoform dissociation,fatigue severity,and demographic variables support the validity of our bifactor model of IBS specific symptom severity.CONCLUSION: The findings suggest that IBS symptom severity might best be understood as a continuous and multidimensional construct which can be reliably and validly assessed with the B-IBS.展开更多
基金This study was supported by the Start-Up Research Grant of Shenzhen University[20200807163056003]the Start-Up Research Grant[Peacock Plan:20191105534C]。
文摘Affective exercise experience as an emerging theoretical concept has great potential to provide a more nuanced understanding of individual factors that influence exercise behavior.However,concerning the Affective Exercise Experiences(AFFEXX)questionnaire,it has not been examined yet whether the structural score of the AFFEXX is a useful index to predict physical activity(refers to any bodily movement produced by skeletal muscles that requires energy expenditure).Furthermore,there is currently a gap in knowledge regarding the psychological mechanisms that can explain the relationship between affective exercise experiences and the level of physical activity(PA).In order to adress these gaps in the literature,we conducted two studies among Chinese collge students that aimed(i)to investigated whether the total score of the three AFFEXX-C constructs(antecedent appraisals,core affective exercise experiences,and attraction-antipathy towards exercise)is a relaible indicator that can be utilized in research and pratical settings and(ii)to evalute the specific psychological mechanisms that can explain the relationship between affective exercise experience and PA.In Study 1,we recruited 801 voluntary Chinese college students for bifactor and correlational analyses.In Study 2,875 Chinese college students were enrolled to verify our findings from Study 1 and to explore the aforementioned mechanism.Results from the bifactor analyses supported our hypothesis that the total scores of the three AFFEXX-C constructs can be used among Chinese college students to establish a link with PA.Additionally,our results suggested that core affective exercise experiences and attraction-antipathy mediated the relationship between antecedent appraisals and the level of moderate-to-vigorous intensity PA.Therefore,measuring affective exercise experiences using the AFFEXX-C,specifically the total scores of each individual construct may be a useful approach to predict future PA levels.
文摘AIM: To investigate the latent structure of an irritable bowel syndrome(IBS) symptom severity scale in a population of healthy adults.METHODS: The Birmingham IBS symptom questionnaire which consists of three symptom specific scales(diarrhea,constipation,pain) was evaluated by meansof structural equation modeling.We compared the original 3-factor solution to a general factor model and a bifactor solution in a large internet sample of college students(n = 875).Statistical comparisons of competing models were conducted by means of χ2 difference tests.Regarding the evaluation of model fit,we examined the comparative fit index(CFI) and the Root Mean Square Error of Approximation(RMSEA).RESULTS: Results clearly favored a bifactor model of IBS symptom severity(CFI = 0.99,RMSEA = 0.05) which consisted of a strong general IBS somatization factor and three symptom specific factors(diarrhea,constipation,pain) based on the subscales of the Birmingham IBS symptom questionnaire.The fit indices of the competing one factor model(CFI = 0.85,RMSEA = 0.17) and three factor model(CFI = 0.97,RMSEA = 0.08) were clearly inferior.χ2 difference tests showed that the differences between the models were indeed significant in favor of the bifactor model(P < 0.001).Correlations of the four latent factors with measures of pain sensitivity,somatoform dissociation,fatigue severity,and demographic variables support the validity of our bifactor model of IBS specific symptom severity.CONCLUSION: The findings suggest that IBS symptom severity might best be understood as a continuous and multidimensional construct which can be reliably and validly assessed with the B-IBS.
