Regular exercise participation mediates the affective response to acute bouts of vigorous exercise.

Physical inactivity is a leading factor associated with cardiovascular disease and a major contributor to the global burden of disease in developed countries. Subjective mood states associated with acute exercise are likely to influence future exercise adherence and warrant further investigation. The present study examined the effects of a single bout of vigorous exercise on mood and anxiety between individuals with substantially different exercise participation histories.

The impact of patient self assessment of deformity on HRQL in adults with scoliosis.

Background: Body image and HRQL are significant issues for patients with scoliosis due to cosmetic deformity, physical and psychological symptoms, and treatment factors. A selective review of scoliosis literature revealed that self report measures of body image and HRQL share unreliable correlations with radiographic measures and clinician recommendations for surgery. However, current body image and HRQL measures do not indicate which aspects of scoliosis deformity are the most distressing for patients.

Paradoxical effects of hedonic disparities in negative anticipatory contrast.

Negative anticipatory contrast (NAC) occurs when the presentation of two solutions in sequence over a number of trials leads to the suppression in consumption of the first solution. A hedonic 'disparity' between the two solutions may lead to this suppression. However, what the relative role of the gustatory properties versus the nutricaloric loads of the two solutions is in determining the acquisition of NAC is uncertain.

In vivo behavior of a Helicobacter pylori SS1 nixA mutant with reduced urease activity.

Helicobacter pylori mutants devoid of urease activity fail to colonize the gastric mucosa of mice; however, the effect of decreased levels of urease on colonization has not been examined. The nixA gene, required for full urease activity, encodes a cytoplasmic membrane nickel transporter that imports nickel ions and leads to incorporation of nickel ions into apourease. A nixA mutant of the Sydney strain of H.