جستجوی مقالات مرتبط با کلیدواژه « ایمونوگلوبولین a » در نشریات گروه « تربیت بدنی »

The present study aimed at investigating the effect of effleurage sports massage on some immune indices in elite wheelchair basketball players after one session of specific intensive exercise. 16 physically disabled subjects were homogenized based on the disability rating (IWBF) and divided into two groups of control and experimental (each group 8 subjects). Subjects performed a session of specific intensive basketball exercise with wheelchair for 40 minutes with maximum intensity (heart rate control). Then, the experimental group received massage for 20 minutes and control group rested at the same time. Blood serum samples were taken by laboratory experts at four steps. Results indicated no significant differences in the immunoglobulin A (IgA) between the experimental and control groups immediately after massage and after 24 hours (P>0.063) (P>0.057) respectively. The number of neutrophils significantly decreased immediately (P<0.008), and 24 hours after the massage (P<0.030). Overall, due to a decrease in the neutrophils, it seems that 20 minutes of effleurage sports massage can have beneficial effects on the immune system of wheelchair basketball players. Therefore, coaches and athletes are advised to use effleurage sports massage following intensive workouts.

Background and would support a view that intense physical activity to cause suppression mucosal immune system athletes. The purpose of this study was to determine effect of single bout of soccer on salivary IgA and total protein responses in male soccer players. In this investigation participants Twenty two soccer male players of league three in Iran with (age 21±2 yr,BMI 24.6± 2.1 kg/m2,VO2max 51.1 ±3.3 ml.kg-1. min) Before, immediately and 24 hours post-exercise, salivary samples were collected. Data were statistically analyzed by Shapiro wilk-test, bonfferoni test and one way ANOVA. The results showed that single match soccer increases salivary IgA concentration, Total protein levels and decrease s-IgA/Pro ratio and flow rate (P<0.05) significantly, but had no effect on salivary IgA secretion rate (P<0.05). Findings of this study indicate despite decrease salivary flow rate, a single soccer match caused non significantly reducing of IgA secretion rate, lead to not suppression mucosal immune performance.

The Aim of present study was to investigate response of salivary IgA and cortisol to reduction body''s carbohydrate reserves following paddling interval exercise in men kayakers. Subjects included 10 men elite kayakers، with a mean age of 18. 6±4. years، height 179. 2±4. 07 and weight 68. 3±9. 6 kg، that participated in two separate session within 7 days in two tests and were evaluated. At first، when the glycogen levels were normal، they performed interval exercise protocol، including 3 time padlling for 1000 meters with 90% maximum heart rate intensity and the rest interval 1. 5 fold of padlling time، then the day before main test، to reduce body carbohydrates reserves، they performed a test of padlling with 80% maximum heart rate and rate intensity for 60 minutes and a test including 4 times padlling for 250 meters wihe 90% maximum heart rate intensity and 1. 5 fold rest interval were followed. Then، subject’s nutritional status was controlled and they were asked to stay fast overnight. In the morning، after 12 hours fasting، the interval exercise protocol was performed. Saliva samples were collected before، immediately and 3 hours after exercise. were used Analysis of variance with repeated measures and Bonferroni post hoc test to locate differences and the independent t-test to compare the differences in normal and reduction body''s carbohydrate reserves conditions. One bout of paddling interval exercise significantly reduced salivary IgA and increased cortisol levels (P<0. 05)، in normal and reduction body''s carbohydrate reserves conditions. Nevertheless، was observed no significant difference between IgA and cortisol responses under these two conditions. It seems that one bout interval exercise causes decrease in salivary IgA and increase in cortisol levels، in normal and reduction body''s carbohydrate reserves conditions، of elite kayakers.

To examine whether time of day significantly affects salivary IgA, cortisol, α-amylase and total protein levels before and after sub-maximal swimming. Fourteen female swimmers (age 13±1.33 years, weight 48±4.75 kg, Vo2max 45.92±3.96 ml/kg/min) volunteered to participate in the study. In a fully randomized, cross over design, each subject performed 10×200 m front crawl at 80% of their seasonal best time, with one minute rest between each 200 m, at 08:00 and 18:00 hours on two days aware. Timed, unstimulated saliva samples were collected before and after exercise. Saliva samples were analyzed by two-factor analysis of variance (ANOVA) with repeated measures. Statistical significance was accepted at p<0.05. Significant time of day effects (am and pm respectively) were observed in s-IgA, S-IgA, cortisol, and saliva flow rate, αamylase and total protein before exercise (P<0.05). The exercise protocol did not significantly affect s-IgA but, in comparison with values before exercise, caused significant alterations in cortisol, S-IgA, saliva flow rate, αamylase and total protein (P<0.05). There was no significant interaction effect of time of day by exercise on any salivary variables measured except αamylase. These results suggest a significant circadian variation in the variables measured before exercise, with showing a significant effect on their acute responses to exercise except s-IgA and a significant interaction effect of time of day by exercise on salivary αamylase.

The purpose of this study was to determine the effects of official soccer competition on saliva cortisol, testosterone and immunoglobulin A in male players. For this purpose, 14 fixed players (age: 28.24±4.3 years) were equally selected from two opponent teams in 2009 Elimination Cup. Saliva samples at the rest and immediately after the first half time, before and after the second half time were collected and concentration of cortisol and testosterone through radioimmunoassay procedure and concentration of immunoglobulin through a nephelometry procedure were measured. Data were analyzed using analysis of variance of repeated measures and paired t test at P≤0.05. Results of this study showed that the official soccer competition significantly influenced saliva cortisol, testosterone, and immunoglobulin A in male players (P<0.001). This finding suggests that official soccer competition may results in decreased concentrations of immunoglobulin A in male players and expose them to the upper respiratory tract infection.