کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5841569 1560587 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hot environments decrease exercise capacity and elevate multiple neurotransmitters
ترجمه فارسی عنوان
محیط های گرم باعث کاهش فعالیت ورزشی و افزایش چندین انتقال دهنده عصبی می شوند
کلمات کلیدی
درجه حرارت بالا، رطوبت، انتقال دهنده عصبی، خستگی ورزش، ورزشکاران،
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی کاردیولوژی و پزشکی قلب و عروق
چکیده انگلیسی

AimsThis study aimed to test the hypothesis that different neurotransmitters and hormones are presented at exercise fatigue in hot temperatures with differing relative humidities (RH).Main methodsEight trained male athletes performed a graded maximum oxygen consumption (VO2max) test in five different environmental conditions, namely, 21 °C/20% RH (Normal), 33 °C/20% RH (Hot 20%), 33 °C/40% RH (Hot 40%), 33 °C/60% RH (Hot 60%), and 33 °C/80% RH (Hot 80%). Blood samples were taken pre- and post-exercise and analyzed for noradrenaline (NA), adrenaline (ADR), dopamine (DA), serotonin (5-HT), 5-hydroxyindoleacetic acid (5-HIAA), and prolactin (PRL). Weight and oral and skin temperatures were recorded pre- and post-exercise. Heart rate was continuously monitored throughout the exercise.Key findingsHot 20%, Hot 40%, and Hot 80% had lower VO2max levels compared with Normal (P < 0.05). The data pooled from all five conditions indicated that the NA (P < 0.0001), PRL (P < 0.0001), 5-HT (P = 0.002), 5-HIAA (P = 0.029), and DA (P = 0.016) levels were affected by exercise. Accordingly, NA level was significantly associated with performance time. However, ADR did not show any significant effect between pre- and post-exercise (P = 0.187).SignificanceThe maximal aerobic capacity was impaired in high temperature and most humidity conditions. NA was strongly associated with exercise time, which suggested that exercise duration and intensity had an important influence on NA neurotransmitter level irrespective of the environmental conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Life Sciences - Volume 141, 15 November 2015, Pages 74-80
نویسندگان
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