Yiannis Zervas

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The aim of this study was to assess the effect of physical exertion (treadmill) on mental performance (matching a comparison design). Nine pairs of monozygotic twins (boys aged 11 to 14 yr.) were randomly divided into two groups, one trained and one untrained, while eight boys of the same age served as a control group. The trained group underwent a(More)
The purpose of the present study was threefold, to examine (a) whether participation in an aerobics class produces an enhancement in the mood state of exercising women, (b) whether any effects persist 24 hours later, and (c) whether exercising in the morning or in the afternoon leads to differential effects. 99 women, aged 19 to 55 years, participated. Of(More)
OBJECTIVE A significant proportion of breast cancer patients experience psychiatric morbidity. The present study compared the psychopathological profile (depression, anxiety and general psychopathology) of Greek women with breast cancer with a group of healthy controls. MATERIALS AND METHODS Patients (n=109) were recruited from a specialized oncology(More)
The purpose of this study was to examine the relationships among competitive worries, sport confidence, and performance of young athletes. Participants were 143 young swimmers aged 11 to 12 years. The athletes completed trait and state questionnaires (competitive worries and sport confidence) in noncompetitive and competitive conditions, respectively. The(More)
The purpose of this study was to examine the effects of four teaching methods on several measures of motor skill, self-concept, and social attitudes of 130 fifth-grade children (67 boys, 63 girls), who were randomly chosen from five elementary schools in one area. Teaching methods were systematically applied for 60 teaching days (20 weeks). Measurements(More)
Objective: A significant proportion of breast cancer patients experience psychiatric morbidity. The present study compared the psychopathological profile (depression, anxiety and general psychopathology) of Greek women with breast cancer with a group of healthy controls. Materials and Methods: Patients (n=109) were recruited from a specialized oncology(More)
OBJECTIVE To translate and validate the Perinatal Grief Scale (PGS) (short version) in a sample of Greek women with perinatal loss during the first and second trimester of pregnancy. METHODS One hundred seventy-six women were approached a few hours after the loss. Along with the PGS, three more questionnaires were completed: the Edinburgh Postnatal(More)
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