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Background:Statistical reviews of the theories of reasoned action (TRA) and planned behavior (TPB) applied to exercise are limited by methodological issues including insufficient sample size and data to examine some moderator associations.Methods:We conducted a meta-analytic review of 111 TRA/TPB and exercise studies and examined the influences of five moderator variables.Results:We found that: a) exercise was most strongly associated with intention and perceived behavioral control; b) intention was most strongly associated with attitude; and c) intention predicted exercise behavior, and attitude and perceived behavioral control predicted intention. Also, the time interval between intention to behavior; scale correspondence; subject age; operationalization of subjective norm, intention, and perceived behavioral control; and publication status moderated the size of the effect.Conclusions:The TRA/TPB effectively explained exercise intention and behavior and moderators of this relationship. Researchers and practitioners are more equipped to design effective interventions by understanding the TRA/TPB constructs.

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Postpartum state anxiety is a common, acute phenomenon during the maternity hospitalization that is associated with increased maternal health care utilization after discharge and reduced breastfeeding duration. State anxiety screening during the postpartum stay could improve these outcomes.