نشریه ورزش و علوم زیست حرکتی
سال یازدهم شماره 1 (پیاپی 21، بهار و تابستان 1398)

Complications caused by corona disease include a wide range of physical and mental problems, which in some cases may continue for weeks or months after recovery. The aim of this study was to investigated the effect of an aerobic training course on some metabolic indicators, quality of life and general health of women recovered from corona disease.

The current research was applied and semi-experimental with a pre-test-post-test design comparing the two groups. The statistical population of the present study consisted of 30- to 45-year-old women in Bonab city. Among them, a sample of 30 people was selected by purposive sampling method based on inclusion criteria. The experimental group performed the training protocol for 12 weeks, including warm-up, treadmill training and stretching breathing exercises. Obesity indices, blood pressure, maximal aerobic capacity, quality of life questionnaire, metabolic indices and general health were evaluated.

Aerobic exercise has a significant role in improving metabolic parameters, quality of life and general health of the experimental group. Moreover, the total cholesterol, LDL, Fasting glucose, insulin resistance, general health (GHQ), quality of life, body fat mass, lean body mass, body mass index (BMI), aerobic power, arterial oxygen saturation level were significantly different from the control group (P<0.05). Also based on the results between HDL, fat percentage, resting blood pressure, resting heart rate There was no significant difference with the control group after the 12 weeks of intervention (P>0.05).

The results of the study showed that aerobic exercise in overweight women improves metabolic indicators,

Post-activation potentiation (PAP) is the phenomenon by which muscular performance is enhanced in response to a conditioning stimulus. The purpose of this study was to compare the effects of PAP induced by resisted, accelerated and traditional plyometric with and without caffeine ingestion on competitive judokas performance.

In a randomized, crossover design, 9 male judokas participated in this study and performed two special judo fitness test (SJFT) with 90 second between trials in four conditions: PAP with traditional plyometric+ SJFT, PAP with accelerated plyometric+ SJFT, PAP with resisted plyometric+ SJFT and warm up+ SJFT. To evaluate the effect of caffeine, 10 days after the last PAP session, the subjects participated in four conditions randomly: caffeine + PAP + SJFT, PAP + SJFT, caffeine + SJFT and placebo+SJFT. Caffeine (6 mg/kg) was administered 60 minutes and PAP (3 sets x 6 repetitions of jumping alternating lunges) was performed 5 min before the SJFT. Blood sample was taken after SJFT2. To analyze the data One-way repeated measures ANOVA and Bonferroni post-hoc test and significant level at P≤0.05 was used.

Results showed no significant difference in total throws and index of SJFT between PAP conditions. Caffeine and caffeine + PAP resulted in significant increase in total throws of SJFT and blood lactate than PAP and placebo (P≤0.05).

It seems that PAP with different plyometric methods can’t improve SJFT, but caffeine combined with accelerated PAP can be more effective to improve judo performance.

Considering the Anti-inflammatory and antioxidant effects of fish oil (FO) and the prevalence of muscle damage in female futsal players, the present study aimed to investigate the effect of six weeks of FO supplementation on muscle damage markers in female futsal players.

20 female futsal players (age, 22.56±3.58 years; weight, 57.31±5.17 kg; and BMI, 20.56±1.72 kg /m2) were randomly divided to experimental (n = 10) and control (n = 10) groups. The experimental group received FO, and the control group received triglyceride oil for six weeks (three-gram per day). All subjects were tested by the "Yoyo test" after six weeks of FO supplementation and placebo. Serum levels of lactate dehydrogenase (LDH) and creatine kinase (CK) enzymes were measured as markers of muscle damage in four phases; at the basic state (before the supplementation), after six weeks' supplementation (before the Yoyo test), immediately, and 24 hours after the Yoyo test. The data were analyzed by repeated measure ANOVA and Bonferroni using SPSS version 20 software at a significance level of P<0.05.

After six weeks of FO supplementation, the difference in LDH and CK levels between the groups was not significant (P>0.05). Of course, in the within-group comparison, LDH and CK in the experimental group decreased significantly. Also, the changes in LDH and CK in response to the Yoyo test after six weeks of FO supplementation were not significant between the control and experimental groups (P>0.05).

It seems that the six weeks of FO supplementation can't prevent exercise-induced muscle damage in female futsal players.

The role of oxidative stress in the occurrence of heart diseases has been noticed by researchers, and the effect of continuous and intermittent exercises on the oxidative stress factors of heart tissue has not been clearly determined. Therefore, the aim of this study was to investigated the effect of 6 weeks of continuous and intermittent exercises on the oxidative stress of the myocardium of rats

For this purpose, 40 adult male rats were randomly divided into 4 groups (ten each): 1- healthy control, 2- training, 3- continuous training, 4- intermittent training. The training protocol included six weeks of training, five sessions/week of continuous and periodic training. 48 hours after the last training session and after complete anesthesia, the left ventricle of the heart was removed and the levels of superoxide dismutase, catalase and malondialdehyde enzymes were measured by spectrophotometric method (P<0.05).

The results showed that continuous and intermittent exercises caused a significant decrease in malondialdehyde compared to the control group (P<0.05). Also, continuous and intermittent exercises caused a significant increase in superoxide dismutase and catalase compared to the control group (P<0.05). No significant difference was observed between the continuous and periodic exercise groups in all three factors (P<0.05).

Based on the results of the research, it can be stated that continuous and intermittent exercises can have protective effects on the heart of rats and prevent the occurrence of heart damage.

Sexual dysfunction is common among women and takes a toll on quality of life. The purpose of this study was to assess the effects of both aquatic exercise and fennel consumption on multiple domains of sexual function and estradiol level in women.

In this semi-experimental study with pretest-posttest design, 30 females aged 20–40 years were randomly assigned to three major groups of exercise-placebo, exercise-supplement, and control. Aquatic exercise was carried out at moderate intensity, three days per week for 8 weeks. The participants in the fennel group received oral soft capsules containing 100mg of fennel twice a day for 8 weeks and women in the placebo group received the same doze of placebo capsules containing 100mg of sunflower oil. Female Sexual Function Index (FSFI) and blood samples were collected 48 h before and after the last sessions of exercise training. Estradiol was assessed using ELISA assay. Data were analyzed using repeated measures ANOVA and SPSS Software v.21.

Total FSFI score (P= 0.01) as well as desire (P= 0.01), arousal (P= 0.03), satisfaction (P= 0.04), orgasm (P= 0.05) and lubrication (P = 0.04) in the exercise-placebo group improved significantly compared to the control group. Furthermore, sexual function (P=0.01) and estradiol level (P=0.02) were significantly improved in exercise-supplement group, compared to exercise-placebo group.

Combination of aquatic exercise with fennel consumption may increase estradiol level, and improve sexual function in women.

Anaerobic power and capacity are considered determinants of performance and are usually assessed in athletes as a part of their physical capacities’ evaluation along the season. The purpose of this study was to evaluate the validity a new field test for the assessment of the anaerobic capacity of elite wrestlers.

42 elite wrestlers of Khorasan Razavi participated in this study, voluntarily. In two stages with one-week rest interval, an upper-body Wingate anaerobic test and a specifically designed test were measured. Before, immediately, five and ten minutes, variations of the heart rate and blood lactate were measured. In the designed test, a battle rope was used, each participant performed alternating arm waves with a Japanese guard for 30 seconds as maximum as possible.To analyze of data Pearson correlation coefficient, inter-class correlation coefficient , Bland-Altman agreement and linear regression were used.

There was a significant relationship between the anaerobic capacity of the 30-second upper-body Wingate test and the specifically designed test. Also, a significant relationship was observed between absolute (r=0.66; P=0.001) and relative peak (r=0.52; P=0.007), absolute mean power (r=0.44; P=0.02) and absolute minimum power (r=0.41; P=0.03) in two methods. The variations in HR and BLa were statistically significant at minute 5 (r=0.52; P=0.007) and 10 (r=0.65; P=0.001), respectively. The linear regression model was able to predict the anaerobic capacity using the specifically designed test. The inter-class agreement coefficient was poor (P=0.463), but my Bland-Altman diagram showed that there was a good agreement between the mean and the difference in anaerobic capacity in both methods.

Using available alternative methods with high external validity to assess upper anaerobic capacity is a more appropriate method than laboratory tests. The specifically designed test seems to able the prediction of the upper body anaerobic capacity in elite wrestlers.