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Background: Lifestyle intervention is considered first-line therapy for Nonalcoholic Fatty Liver Disease (NAFL). Objectives: Here, we aimed to compare the effect of combined Aerobic Training (AT) and Vitamin D (Vit D) supplementation on NAFLD in elderly women with Vit D deficiency. Methods: We recruited 40 women (60 -65 years) with NAFLD (second or third grade) and Vit D deficiency. Then, using simple randomization, the subjects were assigned to four groups including aerobic training (AT; 60% -75%, 20 -40 min/day, 3 days/wk running and walking), vitamin D supplementation (Vit D; 50,000 IU one day/week), aerobic training plus vitamin D supplementation (AT + Vit D), and sedentary control (C; placebo). The data were analyzed using paired t-test and one-way analysis of variance and Tukey's post hoc test with SPSS21 at a significance level of P < 0.05. Results: After eight weeks of intervention, fatty liver grade markedly reduced in the AT + Vit D, AT, and Vit D groups (60%, 38.88%, and 22% respectively). However, it increased by 17.60% in the control group. The combination of AT + Vit D significantly reduced liver enzymes, anthropometric indices, and glycemic indices and improved lipid profile. All groups demonstrated a significant inverse correlation between vitamin D and fatty liver grade. Conclusions: A sedentary lifestyle and Vit D deficiency accelerate the NAFLD probably by deteriorating hepatic risk factors. Additionally, adequate levels of plasma vitamin D are necessary to achieve the beneficial metabolic effects of aerobic training.

PurposeHere, we studied the beneficial effects of aerobic exercise on metabolic syndrome components, cognitive performance, brain derived neurotrophic factor (BDNF) and irisin in ovariectomized rats with different serum vitamin D (Vit D) status.MethodsEighty female wistar rats were divided into 2 groups of sham operated (sham, n = 8), and ovariectomized (OVX, n = 72). Then OVX were divided into 9 groups of receiving combination of exercise protocol with low dose of Vit D (OVX + EXE + LD), high dose of Vit D (OVX + EXE + HD), Vit D deficiency (OVX + EXE − D), and (OVX + EXE + Veh). Also non exercised groups of OVX receiving high dose of Vit D (OVX + HD), low dose of Vit D (OVX + LD), Vit D deficiency (OVX − D), and Veh (OVX + Veh) were included. After 2 months of related interventions, spatial memory was assessed using Morris water maze (MWM), and then metabolic syndrome components were measured.ResultsHigh dose of Vit D supplementation showed significant reduction in weight (p = 0.001), lipid profiles (p = 0.001), visceral fat (p = 0.001) and waist circumference (p = 0.001) regardless of exercising or not, with no change in cognitiive function. Serum BDNF level was significantly higher in Vit D deficient group (p = 0.001), and was decreased in the OVX + HD. In contrary, irisin did not show any significant relationship with serum concentration of Vit D, while it was significantly elevated in the exercised groups compared with non-exercised counterparts.ConclusionVit D insufficiency deteriorates metabolic syndrome components, and elevates serum BDNF as a compensatory metabotropic factor, and further supplementation significantly attenuates these components parallel with reduction in BDNF. In addition, aerobic exercise successfully induces various metabolic benefits, provided optimum serum level of Vit D.

Nutrition is an important component of any physical fitness program. The main dietary goal for active individuals is to obtain adequate nutrition to optimize health fitness and to increase sports performance. The purpose of this study was to compare nutritional knowledge and food habits in collegiate s and non-collegiate athletes. The target population of this study was all male and female collegiate and non-collegiate athletes in Rasht city of Iran. After translate of the standard nutrition knowledge and attitudes survey questionnaire Zawila et al., and adjust of some questions, questionnaire was evaluated by Professors of faculty of physical education and sport sciences. The reliability guided Cronbach Alpha value of .81. A researcher-built questionnaire which was developed to measure subject′s nutrition knowledge and habits, distributed to 130 collegiate and non-collegiate athletes males and 120 Collegiate and non-collegiate athletes females randomly. The questionnaire contained 15 nutrition knowledge questions and 25 nutrition habits questions. The collected data was analyzed by t-test, one-way ANOVA and Pearson correlation coefficient (p < .05). The correct response rate for the sport nutrition and general nutrition score were in collegiate athletes male (57.15; 52.5%) and athletes female (58.14; 54.85%); non-collegiate athlete′s males (41.55; 39.86%) and athletes female (42.11; 40.66 %) respectively. Also, mean nutrition scores in collegiate athlete′s males and females were significantly higher than non-collegiate athletes male and females. Furthermore, there were significant differences in the total mean score questionnaire between collegiate and non-collegiate athletes (p < .05). Based on the result of our study the knowledge of Iranian non-collegiate athletes were lower than collegiate athletes. For this reason, nutrition knowledge and attitudes of Iranian non-collegiate athletes need to improve. So, these suggest that nutrition lectures′ courses are one of the solutions to increase knowledge about nutrition.

The purpose of this study was to compare physical self-concept between physical education and non-physical education university students. The target population of this study was all male and female physical education and non-physical education university students in Rasht city of Iran. After translating the Physical Self-Description Questionnaire (PSDQ) and adjusting some of the questions, the questionnaire was evaluated by the specialists in the context of validity and the reliability achieved by test-retest (Cronbach Alpha value of 0.84). We then, according to the Odineski table selected 180 physical education and non-physical education males and 190 physical education and non-physical education females opportunistically. The collected data was analyzed by 2×2 MANOVA for determine differences between genders and major. The results showed mean vector scores of physical education in the following scales: physical activity; global physical; competence; sports; strength; endurance and flexibility were significantly (p<0.05) higher than that of non-physical education major students. Also, the results shows that mean vector scores of male in the following scales: health; coordination; physical activity; body fat; global physical; competence; sports; global physical self-concept and global esteem were significantly (p<0.05) higher than female. Based on the result of our study the physical self-concept non-physical education and female is lower, than that physical education and male. The results may reflect that male and physical major education students, who usually spend more time on physical activity and sport training to have better fitness and skill oriented self concept than their counterparts.