fatemeh ghorban

The aim of this study was to provide a predictive model of team performance based on team learning components, transformational leadership and team reflection. The research method was applied in terms of purpose and in terms of data type (quantitative). Also, this research was a descriptive-correlational research in terms of data collection. The statistical population included all 1,700 employees of the Ministry of Education in the whole country. To determine the sample size, Cochran's method was used and 313 people were selected as a multi-stage cluster sampling method. Data were collected by documentary and field study (standard and researcher-made questionnaire). In the present study, apparent, content and structural validity were used to determine the validity of the questionnaire and to determine the reliability, Cronbach's alpha (team performance, 0.75, team learning, 0.81, transformational leadership, 0.79, and reflectivity Team (0.87) and combined reliability were used, all of which were approved. To analyze the data, structural equation modeling and T-group sampling tests were used. The results showed that the components of team learning are transformational leadership, team reflection, and factors predicting team performance.

Objective(s)The purpose of the present study was to evaluate the effect of Ramadan fasting and weight-lifting training on plasma volume, glucose, and lipids profile of male weight-lifter.Materials and MethodsForty male weight-lifters were recruited and divided into 4 groups (n=10 each) and as the following groups: control (C), fasting (F), training (T) and fasting-training (F-T). The T and F-T groups performed weight-lifting technique trainings and hypertrophy body building (3 sessions/week, 90 min/session). All subjects were asked to complete a medical examination as well as a medical questionnaire to ensure that they were not taking any medication, were free of cardiac, respiratory, renal, and metabolic diseases, and were not using steroids. Blood samples were taken at 24 hr before and 24 hr after one month of fasting and weight-lifting exercise. The plasma volume, fasting blood sugar (FBS), lipid profiles, and lipoproteins were analyzed in blood samples. ResultsBody weight and plasma volume showed significant (P< 0.05) decrease and increase in the F group (P< 0.05) respectively. Also, a significant reduction was observed in F-T group body weight (P< 0.01). A significant increase was found in FBS level of F group (P< 0.05). The lipid profiles and lipoproteins didn’t change significantly in C, F, T and the F-T groups.ConclusionThe effect of Ramadan fasting on body weight and plasma volumes may be closely related to the nutritional diet or biochemical response to fasting.