Research Paper I Open Access I Released under (CC BY-NC) license
A Khosravi; R Fathi; M Baghersalimi; A Rasouli
Abstract
Aim: Angiopoietin-like protein 8 (ANGPTL8) is a hepatocyte-derived circulating factor that regulates plasma triglycerides levels. The purpose of this study was to investigate the response of serum ANGPTL8 levels to acute exercise in physically active young men..
Method: Eleven healthy, active young ...
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Aim: Angiopoietin-like protein 8 (ANGPTL8) is a hepatocyte-derived circulating factor that regulates plasma triglycerides levels. The purpose of this study was to investigate the response of serum ANGPTL8 levels to acute exercise in physically active young men..
Method: Eleven healthy, active young males (aged 24±3.63 years, BMI 22.98±2 kg/m2) volunteered for this study. Acute exercise protocol comprising 2 series of 6×10 s sprinting cycling with maximal effort and 10 min active rest (cycling with intensity 65%–75% HRmax).Blood samples were obtained at fasting state, pre-exercise (30 min after breakfast ~365 kcal), immediately, 15, 30 and 45 min after exercise for measuring serum variables. The repeated measures of ANOVA and Bonferroni post-hoc test used to evaluate changes of parameters in the different times. The relationship between variables was assessed using the Pearson correlation coefficient.
Results: The results of present study showed that ANGPTL8, glucose, insulin, lactate, TG and LDL-C levels significantly changed in any time courses of this study (p<0.05). At fasting state, 30 min after breakfast (before exercise) and post-exercise, ANGPTL8 levels not correlated with glucose, insulin, lactate, TG, TC, HDL-C and LDL-C. There was no significant relationship between ANGPTL8 and weight, BMI and body fat percentage.
Conclusion: It seems that acute and short-term exercise is make significant changes in serum levels of ANGPTL8. On the other hand no significant relationship between ANGPTL8 and body composition may related to indvisual differences.
Research Paper I Open Access I Released under (CC BY-NC) license
E Akbarzadeh; H Mohebbi
Abstract
Aim: The body weight is controlled by the balance between energy intake and energy expenditure and also, the amount of exercise-induced weight loss, depends on the amount of the food intake. Milk has also been shown to be more satiating compared to carbohydrate drinks. Therefore the aim of this study ...
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Aim: The body weight is controlled by the balance between energy intake and energy expenditure and also, the amount of exercise-induced weight loss, depends on the amount of the food intake. Milk has also been shown to be more satiating compared to carbohydrate drinks. Therefore the aim of this study was to investigate the effect of milk consumption following exercise on appetite and energy intake in non-athlete females.
Method: Eight healthy non-athlete women (aged 23.25±2.19 years, BMI 21.71±2.42 Kg/m2) volunteered to participate in this study. The Subjects attended the laboratory on three separate randomized trials (there were 3 weeks between trials) during their follicular phase. After consuming a standardized breakfast at 08:00 a.m, 30 minutes continuous exercise was conducted on the cycle ergometer at 65% of the subject’s heart rate reserve. In one trial, the effect of exercise and in the other two trials, the effect of exercise and consuming 600ml of low-fat milk or orange juice (276 Kcal), were investigated on appetite and energy intake. The subject’s energy intake were calculated 60 minutes after exercise or drink ingestion. Also appetite sensations (hunger, fullness, satiety and desire to eat) were assessed using visual analogue scale.
Results: Absolute and relative energy intake were reduced significantly after consuming milk compared with two other trials (exercise,exercise+orange juice)(p<0.05). In addition, consuming milk after exercise in comparison with other trials, caused significant reduction in hunger and desire to eat and it also caused significant increase in fullness and satiety(p<0.05).
Conclusion: The results of this study showed that consuming milk could be useful for controlling the appetite after exercise. Moreover, it could be a part of the strategies for weight control programs.
Research Paper I Open Access I Released under (CC BY-NC) license
R Rahimi; A Jalali
Abstract
َAim: In this study, the effect of green tea extract consumption on plasma Homocysteine (Hcy) and oxidized low-density lipoprotein (ox-LDL) was evaluated after acute resistance exercise in untrained men.
Method: For this purpose, 8 sedentary males (age 36.12±3.11 year; BMI 22.59±2.11kgm2) ...
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َAim: In this study, the effect of green tea extract consumption on plasma Homocysteine (Hcy) and oxidized low-density lipoprotein (ox-LDL) was evaluated after acute resistance exercise in untrained men.
Method: For this purpose, 8 sedentary males (age 36.12±3.11 year; BMI 22.59±2.11kgm2) randomly selected and, in a randomized, double-blind, placebo-controlled crossover study consumed green tea extract (two capsules of 500 mg per day) or placebo (2 capsules of 500 mg per day maltodextrin) for 2 weeks. After this period, they participated in resistance exercise that involves three sets with 75% of one repetition maximum (1RM) and 2 minutes rest between sets and exercises. Blood samples were collected from the brachial vein before and after the resistance exercise to determine the concentration of Hcy and ox-LDL.Results: The result of for ANOVA Repeated Measures showed significant differences in ox-LDL concentration in time and between conditions of green tea extract and placebo (P<0.05), Bonferroni post hoc test was used to check further evaluation, revealed a significant decrease in the concentration of ox-LDL immediately after resistance exercise in green tea compared with placebo (p<0.05) and t-test showed a significant increase in this index in pre-test compared to post-test in the placebo condition (p<0.01). In relation to serum concentration of Hcy, findings suggest a significant increase in this Index at post-test compared to pre-test only in terms of taking placebo (p<0.01).Conclusion: In general, the findings suggest a beneficial effect of 2 weeks green tea extract to prevent a significant increase in serum levels of ox-LDL after acute resistance exercise which is known as one of the key factors in the development of atherosclerosis. However, consumption of green tea extract did not have significant effect on serum Hcy concentration after acute resistance exercise.
Research Paper I Open Access I Released under (CC BY-NC) license
A Teimoori; F Rahmani-nia; B Mirzaei; R TajBakhsh
Abstract
Aim: The worldwide obesity epidemic has produced profound effects on public health. The purpose of this study was to examine the effects of aerobic training with orlistat on insulin resistance and lipid profile in obese men. Method: Forty-eight obese males (Age: 21.56±2.14, Wehght: 103.53±9.44, ...
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Aim: The worldwide obesity epidemic has produced profound effects on public health. The purpose of this study was to examine the effects of aerobic training with orlistat on insulin resistance and lipid profile in obese men. Method: Forty-eight obese males (Age: 21.56±2.14, Wehght: 103.53±9.44, BMI: 33.9±3.21) participated in this study. The subjects were randomizly divided into four groups: orlistat (O, n=12), exercise (E, n=12), orlistat plus exercise (OE, n=12) and control (C, n=12). Subject in all groups adjusted based on age, height, weight, body mass index and aerobic capacity. Subjects in OE and O groups were consumed three 120 mg orlistat capsules after each meal and for eight weeks. Subjects in OE and E groupps conduct exercise protocol 3 times a week and for 8 weeks. Before and after the exercise program, insulin, glucose, lipid profile, food intake and maximum aerobic power was measured. In statistical analysis, descriptive statistics, paired t-test, one way ANOVA and Tukey post hoc test was used. All data were analyzed using spss and P value less than 0.05 considered statistically significant. Results: At baseline the results showed that insulin resistance and lipid profile no significant differences between the study groups. Insulin resistance in C group compare to o, e and OE groups was reduced significantly (P<0.01). also, lipid profile was improved significantly except HDl in experimental group. Conclusion: The results show that regular aerobic exercise without the use of chemical drugs lead to weight loss is desirable changes in insulin resistance and Improvement of lipid profile.
Research Paper I Open Access I Released under (CC BY-NC) license
J Mehrabani; O Khoshkhoui
Abstract
Aim: Systemic inflammation is one of the important consequences of the intensive physical exercises that can lead to decline in performance, same as leading to disorder of cell metabolism and inflammation acute phase responses. probably immune booster supplements can be effective in improving these functions. ...
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Aim: Systemic inflammation is one of the important consequences of the intensive physical exercises that can lead to decline in performance, same as leading to disorder of cell metabolism and inflammation acute phase responses. probably immune booster supplements can be effective in improving these functions. The present study assessing the effects of a treadmill exhaustive exercise after taking Glutamine on level of glucose, insulin, hs-CRP WBC, lactate and fibrinogen among 19 young athletic men
Method: The participants were selected randomly and divided into two groups of Glutamine (n=9, age: 21.1±0.8yr; weight: 68.9±6.2kg) and placebo (n= 10, age: 20.9±0.6yr; weight: 66.9±6.8kg). Glutamine group received 16gr. Glutamine mixed in 50gr. sucrose (sugar), 1.5gr. lemon juice and 300ml water. The placebo group, on the other hand, received 300ml solution of 5% sucrose (i.e. 300ml and 5% sucrose (sugar) and 0.15% lemon juice. After 15min of rest, the participants took glutamine and placebo using double blind method and engaged in an exhaustive Bruce protocol after 1hr of rest.
Results: The results showed that blood hs-CRP level in the Glutamine group was not changed significantly comparing with that of placebo group immediately after exercise. Although, blood level of glucose, insulin and fibrinogen showed significant changes immediately after exercise between the Glutamine and placebo, and an increase immediately after exercise compared to pre-exercise (p<0.05).
Conclusion: Apparently, exercise and taking Glutamine influences on hs-CRP level; although, did not stop increase in glucose, insulin and fibrinogen after exhaustive exercise. It seems taking supplementary Glutamine, probably, can decrease blood level of CRP as a major acute phase response after an intense exercise.
Research Paper I Open Access I Released under (CC BY-NC) license
Sh Mirdar; E Asadi; A Arzani; Gh Hamidiyan
Abstract
Aim: Estrogens binding to estrogen receptors in the cytoplasm, causing an increase in the synthesis of DNA, RNA and others proteins in the target tissue. Endurance exercises may affect the expression of estrogen receptors in overectomized rats. Therefore, the aim of present study was to investigate the ...
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Aim: Estrogens binding to estrogen receptors in the cytoplasm, causing an increase in the synthesis of DNA, RNA and others proteins in the target tissue. Endurance exercises may affect the expression of estrogen receptors in overectomized rats. Therefore, the aim of present study was to investigate the effect of six weeks swimming training on expression of estrogen receptors in the uterus and fallopian tubes in overectomized rats.
Method: thirty female Wistar rats with an average weight of 90-110g, were randomly assigned into three groups, consist of control, sham and swimming training. swimming time at first was 30 minutes for each session that daily increased 5 minutes until reached 60 minutes per day in second week and remained 60 minutes to end of training period (6 week). expression of estrogen receptors in fallopian tubes and uterus tissues were measured by immunohistochemistry assay. data analyzed by ANOVA and Tukey test at α≥0.005
Results: The mean levels of estrogen receptors expression in uterus were not significantly different between training with control group. But differences were significant between training and control groups with sham group (P<0.01). expression of estrogen receptors increased %78.43 in sham group and decreased %2.3 in training group in comparison to control group.
Conclusion: the results of present study indicated that six weeks' swimming training haven’t any effect on expression of estrogen receptors in overectomized rat uterus tissue.
