09 بهمن 1401
ولي اله دبيدي روشن

ولی اله دبیدی روشن

مرتبه علمی: استاد
نشانی: دانشگاه
تحصیلات: دکترای تخصصی / علوم ورزشی (فیزیولوژی ورزشی)
تلفن: 011-35303400
دانشکده: دانشکده تربیت بدنی و علوم ورزشی

مشخصات پژوهش

عنوان Impact of exercise in high-humidity on heart rate variability and salivary oxidative stress in obese and lightweight asthmatic children
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Asthma; Chronic disease; Adolescent; Exercise; Humidity.
مجله JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS
شناسه DOI 10.23736/S0022-4707.20.10312-8
پژوهشگران مهدی احمدیان (نفر اول) ، ولی اله دبیدی روشن (نفر دوم) ، خاطره رضوان (نفر سوم) ، آنتونی لیچت (نفر چهارم)

چکیده

BACKGROUND:Asthma and obesity are becoming increasingly common among children. Such conditions are known to negatively affect both cardiac autonomic function and oxidative stress. We therefore investigated the heart rate variability (HRV) and oxidative (malondialdehyde, MDA) response to exercise within a high humidity environment (~65%) in obese and lightweight asthmatic children. METHODS:Forty-two children participated in this study and were categorized into four groups: obese asthmatic (OA, N.=10), obese non-asthmatic (ONA, N.=15), lightweight asthmatic (LA, N.=10), and lightweight non-asthmatic (LNA, N.=7). Time-domain and nonlinear indices of HRV were assessed at rest, during, and immediately after exercise. Further, saliva samples were collected immediately before and after exercise and analyzed for the determination of MDA. RESULTS:HRV significantly decreased during and after exercise compared to baseline (P<0.05) with short-term fractal scaling exponent (α1) for the LNA group significantly smaller than the OA group after exercise (P<0.05). In contrast, the long-term fractal scaling exponent (α2) was greater after exercise compared to baseline and during exercise for all groups (P<0.05). MDA significantly decreased after exercise compared to baseline (P<0.05). We also found significant correlations after exercise between salivary levels of MDA with HRV components (i.e., RMSSD, SD1, and α2) in asthmatic groups (all P<0.05). CONCLUSIONS:Our findings showed that exercise in high humidity environment does not significantly differentiate the autonomic response among children with various conditions (i.e., obese, asthmatic and healthy). However, a significant relationship was found between HRV and MDA in asthmatic children after exercise, highlighting the inter-relationship between oxidative stress markers and autonomic function in asthmatic children.