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To examine how playing exergames impacts the mood states of university students and staff, and whether such an impact depends on gender and players' previous exercise time. This study was designed as a randomized controlled trial. It enrolled 337 participants and randomly assigned them to an intervention group (n = 168) or a control group (n = 167). A 2-week exergame program was designed for the participants in the intervention group. They were required to play exergames for 30 consecutive minutes each week for 2 weeks and respond to the items measuring vigor, happiness, and perceived stress. All measures were administered before and after the study. Repeated measures analysis of variances were conducted. Playing exergames enhanced vigor and happiness for participants in the intervention group. This group exhibited more positive change in vigor and happiness than the control group. This effect of playing exergames was not moderated by gender, age, occupation (student or staff), or previous exercise time. Playing exergames may induce positive mood states among university students and staff.

In initial and follow-up investigations of neuropsychological function in a patient with elemental mercury intoxication, his scores were compared with those of a group of normal control subjects matched for sex, age and education. Each subject received a comprehensive neuropsychological examination including a personality inventory. On the initial examination the results indicated that the patient had a significant depression of performance intellectual functioning, impairments of attention, non-verbal short-term memory and visual judgement of angles and directions, psychomotor retardation and personality changes including depression, anxiety, desire to be alone, lack of interest and sensitivity to physical problems. Such an impairment picture is compatible with the previous observations of individuals with chronic exposure to elemental, organic or inorganic mercury. The follow-up study was undertaken about 1.5 years later. The results show that the patient's cognitive and personality functions were fully recovered. Our findings thus suggest a reversibility of impaired neuropsychological function in persons with elemental mercury poisoning if a prompt removal from the toxic environment is accomplished, together with proper medical treatment.

Exergames can maintain happiness among users, and such maintenance can be the strongest among users who are trying to control their weight.

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