Does caffeine administration alter salivary α-amylase activity in young male daily caffeine consumers?
Laboratory administered caffeine does not alter sAA activity, even when sAA activity is stimulated by participating in a cognitively engaging task. These data demonstrate that caffeine administration does not affect sAA activity, at least in healthy young men who regularly consume caffeine. Results support recent findings that basal caffeine levels in habitual caffeine users are not associated with basal sAA activity and that daily caffeine intake and diurnal sAA activity are not related.
Self-monitoring reduced snack-eating but not alcohol-drinking. In both groups, self-monitoring appeared to be accompanied by small implicit, but not explicit changes in evaluation. Changes in evaluation apparently do not lead to actual behavioral change on their own. Other factors are expected to be involved as well, such as dissatisfaction at the start of monitoring.