Medical Laboratory Journal
Medical Laboratory Journal
mljgoums
Medical Sciences
http://mlj.goums.ac.ir
1
admin
2538-4449
10.52547/mlj
en
jalali
1400
2
1
gregorian
2021
5
1
15
3
online
1
fulltext
en
Evaluation of Changes in Insulin Resistance and Serum Cortisol Levels after Eight Weeks of Continuous and Interval Aerobic Training in Healthy and Obese Girls
فیزیولوژی ورزشی
Sport Physiology
تحقيقي
Original Paper
<strong>Background and objectives</strong>: Given the growing prevalence of obesity in children, the present study aimed to investigate effects of continuous and interval aerobic training on insulin resistance index and serum cortisol levels of obese girls.<span dir="RTL"></span><br>
<strong>Methods</strong>: The study was performed on 36 healthy girls aged 9-11 years with a body mass index (BMI) of higher than 85th percentile. The subjects were randomly divided into three groups of interval training, continuous training and control. The training groups performed exercises three days a week for eight weeks. The exercises were performed at 70% of VO2max in the first four weeks and at 80% of VO2max in the following weeks. Fasting blood samples were taken 72 hours before the first session and 72 hours after the last training session in order to measure levels of cortisol, glucose, insulin and Homeostatic Model Assessment for Insulin Resistance (HOMA-IR).Weight, BMI and body fat percentage were also measured by conventional methods. Data analysis was performed in SPSS 21 using paired t-test and one-way analysis of variance.<span dir="RTL"></span><br>
<strong>Results</strong>: The mean level of BMI and body fat percentage decreased significantly after the interval and continuous training, respectively (P<0.05). The HOMA-IR index did not change significantly in the study groups (P>0.05). The cortisol level increased slightly in the continuous training and control groups (P=0.075) and decreased insignificantly (P=0.131) in the interval training group. There was no difference between the training groups and the control group in terms of HOMA-IR and cortisol levels.<span dir="RTL"></span><br>
<strong>Conclusion</strong>: Insulin levels, HOMA-IR showed a decrease trend while a reasonable increase in cortisol level we showed in the continuous training group. BMI level and fat percentage decreased in two both training groups.
Continuous training, Interval training, Insulin Resistance, Cortisol, Obese children
33
39
http://mlj.goums.ac.ir/browse.php?a_code=A-10-930-1&slc_lang=en&sid=1
Ameneh
Bahreini
a_bahreine2@yahoo.com
100319475328460019448
100319475328460019448
Yes
Department of physical Education, Islamic Azad University, Chalous Branch, Iran
Maryam
Akbarpour
art635@yahoo.com
100319475328460019449
100319475328460019449
No
Department of Cultivation and Plant Breeding, Faculty of Agriculture and Natural Resources, Islamic Azad University, Chalous Branch, Iran
Rozita
Fathi
roz_fathi@yahoo.com
100319475328460019450
100319475328460019450
No
Department of sport physiology, Mazandaran University, Babolsar,Iran
Hossein
Goldashti
h_goldashti@yahoo.com
100319475328460019451
100319475328460019451
No
Department of Physical Education, Islamic Azad University, Chalous Branch, Iran