Compensation and transfer effects of eating behavior change in daily life: Evidence from a randomized controlled trial

Associations between vaccination and protective behaviors against COVID-19: transfer and redundancy effects as potential psychological mechanisms

This study aimed to investigate mechanisms explaining associations between vaccination and protective health behaviors during the COVID-19 pandemic. The study used a secondary analysis of data from a longitudinal online study at four time points between April 2020 and March 2021. Two hundred and forty participants responded to questionnaires assessing adherence to multiple COVID-19 protection behaviors, COVID-19 vaccination, behavioral specific outcome expectancies and general healthy lifestyle. Statistical analyses included z statistic for differences between correlations and moderation analysis by the SPSS PROCESS macro. The correlation between initial adherence to protective behaviors prior to availability of vaccination and actual vaccination was positive, but when vaccination was available, the concurrent correlation between these behaviors was null. Healthy lifestyle and outcome expectancies moderated the association between vaccination and adherence to protection behaviors. These results were explained by a 'redundancy effect', conceptualized as beliefs that engagement in specific health behaviors justifies evading other health behaviors. The 'redundancy effect' cancelled the initial positive correlation between vaccination and protective health behaviors, produced by a 'transfer effect', based on similarities between the perceived purposes of those behaviors. Theoretical and practical implications of the findings were discussed.

Children and adolescents do not compensate for physical activity but do compensate for sedentary behavior

Little is known about behavioral transfer and compensation within and between moderate-to-vigorous physical activity (MVPA) and sedentary behavior. Thus, taking a within-person perspective, this study investigated across 1 week whether (a) children and adolescents compensate for increased MVPA and sedentary behavior with less of the respective behavior the next day and (b) transfer and compensation occur between these behaviors within 1 day and across 2 days. We obtained data from 2676 participants (6–17 years) of the national Motorik-Modul (MoMo) study in Germany. Participants wore an ActiGraph accelerometer (Pensacola, FL, USA) for 7 days. We analyzed within- and between-day associations using hierarchical linear modeling. If youth engaged in 2 h more sedentary behavior than typical on any given day, they engaged in 37.20 min less MVPA the same day (B = −0.31, p < 0.001) as well as in 4.80 min more MVPA (B = 0.04, p < 0.001) and 7.20 min less sedentary behavior (B = −0.06, p < 0.001) the next day. If youth engaged in 1 h more MVPA than typical on any given day, they engaged in 97.80 min less sedentary behavior the same day (B = −1.63, p < 0.001) and in 5.40 min less sedentary behavior the next day (B = −0.09, p < 0.001). No association with next-day MVPA was observed. Our results indicate that children do not compensate for enhanced MVPA but transfer to less sedentary behavior, while more sedentary behavior is compensated with less sedentary behavior and more MVPA the next day. This provides essential information for the design of intervention studies to tackle physical inactivity and sedentary behavior.