RESUMO
Introduction: The aim of current study was to compare on the effects of regular aerobic training intensities on PGC1-alpha- dependent myokine serum changes and to evaluate lipid profile changes in sedentary obese men
Materials and Methods: Thirty-nine obese men with BMI > 27 were selected and were divided into three groups; group I carried out exercise training with 50-60% of maximum heart rate [Low intensity], group II with 70-80% of maximum heart rate [High intensity], and group III do not carried out exercise training [control group]. All training groups carried out exercise training for 30 continuous sessions [3 sessions/per-week for 30 to 45 min per session]. After initial assessments anthropometrical, VO2max and blood sampling], followed by 10 weeks of exercise training, post-intervention assessments were completed 24 hours after the last training session
Results: Findings were clarified that Irisin was significantly increased in the low intensity group [p=0.005], and increased by twenty-seven percent in high intensity group, difference however not statistically significant [p=0.08]. Also, HDL-cholesterol significantly increased significantly in both groups [p<0.05], LDL to HDL-cholesterol ratio decreased significantly [p<0.05]. In addition, there were significant relationships between some of the lipid and anthropometrical indices with Irisin [p<0.05]
Conclusion: Both of the training interventions had a good effect on of Irisin changes and improvement of lipid profiles in obese subjects. Nevertheless, compared to other intensities, the effectiveness of low intensity training in these subjects was better. In addition, it seems that exercise training can ameliorate Irisin resistance
RESUMO
Various physical modalities and exercises have been recommended for treatment of myofacial trigger points, but there are not randomized controlled trails to compare these methods. The aim of this study was to compare the effects of vibration and ultrasound therapy accompanied with stretching exercises on myofascial trigger points of posterior neck muscles in athletes. In this double-blind randomized controlled trial study. Thirty athletes with myofascial trigger points in their posterior neck muscles were recruited through simple non-probability sampling. They were randomly assigned to either a vibration [n=15] or an ultrasound therapy accompanied with stretching exercises group [n=15]. Before and after intervention, neck disability [ordinal] was assessed with Neck Disability Index [NDI], neck pain with visual analog scale [ordinal] and Northwick Park Neck Pain Questionnaire [NPNPQ], and shoulder pain and disability with Shoulder Pain and Disability Index [SPADI]. A 10 session program which lasted 4 weeks, 3 sessions per week, and 30 minutes per session was performed for both groups. Independent t-test or Mann-Whitney U, paired t-test or Wilcoxon and One Way ANOVA were used for analysis of data. The neck disability index was decreased from 25.33 +/- 5.35 to 13.93 +/- 4.1 in the vibration group and from 25.20 +/- 4.63 to 13.80 +/- 4.36 in the ultrasound therapy group [P<0.001]. The neck pain index was decreased from 15 +/- 3.91 to 6.47 +/- 3.7 in the vibration group and from 13.47 +/- 4.56 to 5.53 +/- 4.19 in the ultrasound therapy group [P<0.001]. The shoulder pain and disability index was decreased from 69.08 +/- 30.53 to 24.83 +/- 22.36 in the vibration group and from 64.69 +/- 23.61 to 17.27 +/- 11.42 in the ultrasound therapy group [P<0.001]. However, no significant difference was observed between two groups regarding improving function and reducing pain and disability of neck and shoulder [P>0.05]. In athletes with myofascial trigger points in posterior neck muscles, both vibration and ultrasound therapy accompanied with stretching exercises causes decreasing in shoulder and neck pain and disability