Ali Reza Shahsavar’s research while affiliated with Payame Noor University and other places

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Publications (14)


Follow-Up Alterations of Catecholamine Hormones after an Intensive Physical Activity
  • Article

December 2011

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212 Reads

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1 Citation

Biosciences Biotechnology Research Asia

Ali Reza Shahsavar

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Catecholamines play an important role in a number of bodily functions such as metabolism of carbohydrates and lipids. Any change in the quantity of the hormones has negative effect on the performance of athletes. Fourteen young athletes participated in this study. The participants took Bruce Test and ran on the treadmill with an average of 16.05 minutes and were totally exhausted. Four blood samples were taken. The first sample served as a pretest and the second sample was taken after Bruce test. The third and fourth samples were taken one day and two days after the Bruce test, respectively. The results of the sample tests were analyzed by using paired sample t-test and repeated measures. The results showed that extreme exhaustive aerobic exercises significantly increase Epinephrine (E) (P = 0.0001) and Norepinephrine (NE) (P = 0.01). The results also showed that the increase for norepinephrine continued two days after physical exercise. It seems that Catecholamines react differently to physical exercises and might be influenced by the psychological state of the athlete before the exercise and the duration and intensity of the exercise. The amount of increase in the epinephrine and norepinephrine seem to contribute to the better athletic performance because these two hormones perhaps have a positive effect on cardiovascular system and metabolism.


A Follow-up Study of the Changes in some Immunity Factors of the Body after Performing One Session of Exhausting Physical Exercise

June 2011

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11 Reads

Biosciences Biotechnology Research Asia

The current research studies the response of immunoglobulins in blood serum to exhausting aerobic exercise. Twelve male students participated in this study. In the first stage, blood samples were drawn from the participants in a fasting state. Then, the participants performed Balke's 15-minute run to the point of exhaustion. After the physical exercise, the second blood samples were drawn. The third blood samples were also drawn after 24 hours of rest. The comparison of concentration mean of immunoglobulin A in the first and second stages suggested a significant difference (P= 0.014). From the comparison of the second stage and the third stage, also a significant difference was noticed (P = 0.003). The comparison of concentration mean of immunoglobulin G after exhausting aerobic exercise revealed a significant difference (P= 0.001). After 24 hours of the participants' rest, G immunoglobulins of serum revealed a significant difference (P= 0.014). Also, the comparison of immunoglobulins concentration between the first and second stages and also between the first and third stages suggested a significant difference. It can be said that in the current research, not only exhausting physical activity did not result in a decrease in immunity system, but also it caused the A, G, and M immunoglobulins concentration to increase significantly. As a result, one session of strenuous physical activity can strengthen the body's immunity system. It seems that individual differences, the increase in catecholamine secretion, and also nervous and hormonal responses are some of the reasons behind the change in blood serum's immunoglobulins.


Follow-up response of epinephrine and norepinephrine to an exhausting physical activity

May 2011

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611 Reads

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1 Citation

Catecholamines play an important role in a number of bodily functions such as metabolism of carbohydrates and lipids. Any change in the quantity of the hormones has negative effect on the performance of athletes. Fourteen young athletes participated in this study. The participants took Bruce Test with an average of 16.05 minutes and were totally exhausted. Four blood samples were taken. The results of the sample tests were analyzed by using paired sample t-test and repeated measures. The results showed that exhaustive aerobic exercises significantly increase Epinephrine (E) (P = 0.0001) and Norepinephrine (NE) (P = 0.01). The results also showed that the increase for norepinephrine continued two days after physical exercise. It seems that Catecholamines react differently to physical exercises and might be influenced by the psychological state of the athlete before the exercise and the duration and intensity of the exercise.


The alterations of some pancreas gland hormones after an aerobic strenuous exercise in male students

May 2011

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6 Reads

The alterations in pancreas gland secretion hormones following an aerobic and exhausting exercise was the purpose of this study. Sixteen healthy men participated in the study. The blood samples of these participants were taken in four stages under fasting condition. The first sample was taken before Bruce exhausting and aerobic test, the second sample was taken after Bruce exercise and the third and forth stages samples were taken 24 and 48 hours after the exercises respectively. The final results indicated that a strenuous aerobic exercise can have a significant effect on glucagon and insulin concentration of blood serum. The increase in blood serum insulin was higher after 24 and 48 hours. It seems that an intensive exercise has little effect on changes in glucagon concentration of blood serum. Also, disorder in secretion in glucagon and insulin concentration of serum disturbs athletes' exercise.


The follow-up study of serum calcium in nano gram per micro liter scale in male athletes

April 2011

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18 Reads

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1 Citation

Digest Journal of Nanomaterials and Biostructures

Changes in rare elements of the body, even in the scale of nanogram per microliter result in disorder in the performance of vital bodily functions. The purpose of this research is to study the alterations in blood serum calcium after exhausting aerobic activity and 24 hours afterwards. To this end, twelve male student athletes were divided into two groups of six. The participants performed Balke 15-minute run in university's running track. Blood samples were drawn from the participants in a fasting state in three different stages. In the first stage, blood samples were drawn before Balke aerobic exercise; in the second stage, after the aerobic exercise, and in the third stage after 24 hours of rest. SPSS software (version 16) and the method of paired samples statistics were used. Comparison between the means of the first stage, 98.38 nanogram per microliter (ng/mic L), and that of the second stage, 114.96 ng/mic L, showed a significant difference (P= 0.0001). Similarly, comparison of the means of serum calcium in the second with the third stage, 104.46 ng/mic L, showed a significant difference (P= 0.0001). Research results showed that exhausting aerobic activity increases serum calcium of the participants' blood. The increase in serum calcium is an indication that calcium is sent from other bodily organs towards blood. Also, it indicates the athlete's bodily need to calcium consumption before performing the exhausting aerobic exercise.


The alterations of anabolic and catabolic hormones following aerobic exercise on athletic students

February 2011

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14 Reads

Aim. The aim of this study was to determine the effect of incremental continuous running on changes in serum testosterone, and cortisol hormones responses. Methods. With the approval of the Ethics Committee, 13 male athletic students were purposefully selected (weight 70.18 ± 4.4 kg, age 20.17 ± 2.4 years, height 1.80 ± 0.33 m, VO2max58.11 ± 3.21ml kg-1 min-1; means ± SD). The participants were trained according to an incremental continuous running program with a certain heart rate for two months (16 sessions). To determine the amount of serum Cortisol and testosterone hormones, the participants' blood samples were taken twice, once 24 hours before the first training session and once 24 hours after 16 sessions. Then, a 12-minute running-walking test was used to measure the maximal oxygen consumption (VO2max). Results. There were no significant differences between the amounts of testosterone and Cortisol hormones secreted in pre-test and post-test. Conclusion. It seems the hormone response to exercise is dependent on several factors including the intensity, duration, and mode of exercise and the training status of the subject.


The impact of fallow-up thyroid hormone alterations and its stimulant after moderate and intense exercise in male athletes

December 2010

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7 Reads

Biosciences Biotechnology Research Asia

This research is carried out as a follow-up study of the alterations in Thyroid Stimulating Hormone (TSH), Triiodothyronine (T3) and Thyroxine (T4) hormones. In this study, aerobic activities as well as Bruce protocol have been used. To this end, 14 male students participated in a semi-experimental study. The students attended a stadium for 3 months, 2 sessions a week to do physical activity. In the first session, 5 ml blood sample was taken from the subjects in a fasting state. The subjects did warm up, stretch and different aerobic exercises for 3 months under the supervision of the researchers. Then they took the Bruce aerobic test in the sports test hall. After the end of the 3-month period and after the Bruce test, 24 and 48 hours after that, blood samples were taken from the subjects. Paired sample test was used in order to track changes in TSH, T3, and T4 concentration from one stage to another. Statistical analysis of data showed that 3 months of sub maximal aerobic sport activities made a significant change in TSH serum concentration of the subjects' blood (P = 0.011). Also, exhausting sport activity of the Bruce test caused a significant change in TSH serum of the subjects' blood (P = 0.003). When the subjects rested for 24 hours, TSH serum still remained significant (P = 0.005). However, 48 hours of rest caused TSH serum of the subjects return to its primary mode (P = 0.356). After 3 months of training and performing exhausting activities of the Bruce test, T3 serum concentration was significant (P = 0.013), (P = 0.028). The results showed that 24 hours after the test T3 serum concentration is significant (P = 0.013). 48 hours of rest caused T3 serum of the subjects' blood to become non-significant (P = 0.621). Three months of aerobic exercise does not bring about a significant change in T4 serum concentration of the blood (P = 0.58). However, the exhausting Bruce test brought about extensive and significant changes in T4 serum of the blood even after 24 hours (P = 0.0001 ). In short, it can be said that aerobic and sub maximal physical exercise and also exhausting aerobic activities bring about significant changes in the concentrations of TSH, T3, and T4. These changes are more visible in exhausting aerobic activities and can even continue for two more days. Therefore, the changes occurred affect the metabolism of threefold foodstuff and also the performance of athletes.


The study of athletes' blood serum phosphorus alterations in nano gram per micro liter

April 2010

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15 Reads

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3 Citations

Digest Journal of Nanomaterials and Biostructures

In this research, blood serum phosphorus alterations after performing an exhausting and intense aerobic exercise and its follow-up alterations after the subjects' 24 hours of rest has been investigated. Very insignificant alterations in nanogram per microliter (ng/microL) can cause extensive alterations in synthesis of Adenosine Triphosphate (ATP) and the metabolism. To this end, 12 male athlete students participated in an exhausting and intense aerobic exercise. In the morning of the test, 4cc blood samples were drawn from an elbow vein of the subjects. Then, the subjects were asked to run at the stadium for 15 minutes and when the running test was over, their blood samples were drawn again. The third stage of blood samples were drawn after 24 hours of rest. The results were analyzed using the SPSS statistical software. The comparisons between the serum phosphorus concentration means revealed that there is a significant difference between the first blood samples and the ones taken after performing the intense aerobic exercise (P=0.0001). On the other hand, no significant difference was observed between the first blood samples and the ones taken after the subjects' 24 hours of rest (P=0.181). Moreover, a significant difference was observed between the second stage blood samples, taken after performing the exhausting and intense exercise and the third stage (P=0.0001). The research results indicated that an exhausting and intense aerobic exercise can change the serum phosphorus even at the level of nanogram per micro liter. Furthermore, this research showed that the serum phosphorus can return to its early state after 24 hours of rest.


The changes of serum magnesium on nano scale after an exhaustion exercise in male students

March 2010

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23 Reads

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3 Citations

Digest Journal of Nanomaterials and Biostructures

The purpose of this research is to study serum magnesium (Mg) alternation in male athletes, according to the scale of nanogram per micro liter. A microscopic alternation, even in nanogram per micro liter scale, in some mineral elements results in extensive alternations in some bodily functions and athletes' performance. To this end, twelve male athletes participated in this research. The researchers took blood samples from the athletes in three different stages. The first stage was in a fasting mode at eight o'clock in the morning. After the first stage, subjects performed Balke's 15-minute aerobic run to the point of exhaustion. The traversed distance was measured and recorded by the researchers. In the second stage, blood samples were taken immediately after the run and in the third stage, after 24 hours of rest. The comparison of the means of serum magnesium concentration in blood between the first and second stages resulted in a significant difference (P = 0.003). There was no significant difference between the means of the first and third stages (P = 0.239), and the comparison between means of the second and third stages also resulted in a significant difference (P = 0.0001).The results indicate that physical exercise to the point of exhaustion leads to an increase in serum magnesium concentration in men. However, 24 hours of relaxation can return the concentration of serum magnesium to its normal mode.


The alteration of thyroid hormone and its stimulating after aerobic physical activity on male athletes

December 2009

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8 Reads

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1 Citation

Biosciences Biotechnology Research Asia

Triiodothyronine (T3) and thyroxine (T4) are both secreted by the thyroid gland in response to thyroid-stimulating hormone (TSH) secreted by the anterior pituitary gland. This research has been conducted in order to study the changes of secretion of thyroid hormone i.e. (T4), (T3), and (TSH) following an aerobic physical activity. A group of 10 male university athletes with over three years experience in different fields of sport participated in this semi- experimental research. The obtained average and standard deviations of factors such as age, height, weight and body mass index (BMI) are as follows: (23.1±1.65), (171.1±4.51), (68.5±4.8) and (21.4±1.1).The exercise training of this research consisted of 20 minutes of running around the track and field, each being 10 rounds in two minutes. The results showed that aerobic activities did not have any significant effect on amount of T3 and TSH secretion, although the results proved a significant difference in concentration level of serum T4 after 20 minutes (4000 m) aerobic physical activity (p = 0.002). So, it seems that aerobic activities can have different reactions on the secretion of thyroid hormone while factors like hematocrit, plasma decrease, as well as changes in PH of blood and also mental conditions may lead to a significant change in concentration of hormone.


Citations (7)


... It seems as if these trainings increase secretion of Catecholamine and sympathetic nerves' activity and decrease insulin secretion resulting in increase in growth hormones, cortisol, epinephrine and glucagon. Finally, this provides the ground for freeing fatty acids from fatty tissues (Shahsavar et al., 2011 and Poorveghar, 2014). ...

Reference:

The Effects of a Three-Month College Football Practice on Apo- proteins A and B of Inactive Young Men
Follow-up response of epinephrine and norepinephrine to an exhausting physical activity
  • Citing Article
  • May 2011

... Further, under hypoxic conditions, an increase in the NOS activity leads to increased concentration of NO , which can react with O 2 À and form the strong toxic for cells species ONOO À (Reaction (2)) [63]. Increases in circulating catecholamine hormones (adrenaline, noradrenaline) levels with exhaustive exercise (even 20-fold) may involve ROS formation during catecholamines autoxidation, and their oxidation by ceruloplasmin or with the participation of the transition metal ions [211,212]. The findings published since 1980s maintain that physical exercise at high altitude should be considered as an important source of OS, due to the skeletal muscle contractive activity, relative hypoxia, hyperaemia, and their relatively large mass in comparison with other cells and tissues [194][195][196]. ...

Follow-Up Alterations of Catecholamine Hormones after an Intensive Physical Activity
  • Citing Article
  • December 2011

Biosciences Biotechnology Research Asia

... Treadmill exercise elevates FGF23, urine phosphate, and L-BAIBA Exercise increases serum phosphate levels, which return to basal levels within 24 h after exercise. 39 FGF23, produced by osteocytes, plays a critical role in maintaining phosphate homeostasis. 40 We subjected male and female mice to treadmill exercise and found significant increases in L-BAIBA. ...

The study of athletes' blood serum phosphorus alterations in nano gram per micro liter
  • Citing Article
  • April 2010

Digest Journal of Nanomaterials and Biostructures

... Many trace elements are involved in the organism at physiological and biochemical levels. Changes in element levels vary depending on the type, duration, intensity of exercise, and nutritional behavior (Pourvaghar and Shahsavar, 2010). ...

The changes of serum magnesium on nano scale after an exhaustion exercise in male students
  • Citing Article
  • March 2010

Digest Journal of Nanomaterials and Biostructures

... On the other hand, no changes were reported in the ingestion or serum values of Cu after training, so the decrease found in the urinary elimination among the athletes could be explained as a body response to retain this element and ensure adequate amounts which would allow the body to overcome the metabolic demands induced by physical training, like enzymatic production. Similarly, no changes in serum concentrations of Cu were found in other studies [46]. ...

Changes at nano scale level in copper after an aerobic activity in males
  • Citing Article
  • December 2009

Digest Journal of Nanomaterials and Biostructures

... -1 . 25(OH)D was analysed using enzyme-linked immunosorbent assay (ELISA) (IBL International, Germany) and assayed in duplicate. Unbound target analytes were washed according to instructions using a wash plate (Wellwash®, Thermo Fisher Scientific Inc.). ...

The follow-up study of serum calcium in nano gram per micro liter scale in male athletes
  • Citing Article
  • April 2011

Digest Journal of Nanomaterials and Biostructures

... The present study was conducted to observe the electrocardiogram and serum electrolyte levels changes among male football athletes in Bangladesh. In this study, all the parameters of healthy male were within reference value and almost similar to the findings observed by the various investigators from different countries [1,5,1112131415161718192021222324. The mean BMI was higher among cases than that of controls, and the result was statistically significant (p<0.001). ...

The Changes of Some Electrolytes after Two Months Activity
  • Citing Article
  • Full-text available
  • April 2008

Journal of Social Sciences