Effects of acute supplementation of caffeine and Panax ginseng on endurance running performance in a hot and humid environment.
نویسندگان
چکیده
Acute supplementation of Panax ginseng (PG) is known not to impose any significant effect on endurance performance of recreational Malaysian runners, while caffeine augments the ergogenic property of some herbs. The present study was aimed to examine the effects of acute supplementation of caffeine and PG on endurance running performance in a hot and humid condition. Nine heat adapted Malaysian recreational runners (age : 25.4 ± 6.9 years, body mass : 57.6 ± 8.4 kg; body height : 168.3 ± 7.6 cm) ingested either placebo or combined dose of 5 mg x kg(-1) of body weight of caffeine and 200 mg of PG one hour before the running on treadmill at 70% of VO2(max) in this placebo-controlled double blind randomised study in a laboratory environment of 31 degrees C and 70% relative humidity. They drank 3 ml x kg(-1) of body weight of cool water every 20 minutes during the exercise to prevent dehydration. Blood samples were withdrawn and oxygen uptake was recorded every 20 minutes while heart rate, core body temperature, skin temperature and ratings of perceived exertion (RPE) were recorded every 10 minutes during the trials. Endurance time was significantly different (P < 0.05) between experimental and placebo trials. Heart rate, skin temperature, core body temperature, oxygen uptake, RPE, plasma insulin, glucose, free fatty acid and lactate levels during the endurance exercise did not show any significant difference between the trials. Thus, we conclude that combined and acute supplementation of caffeine and PG in the said doses improved the endurance running performance of the heat-adapted male recreational runners.
منابع مشابه
Effects of acute supplementation of Panax ginseng on hydration status during endurance running exercise in a hot and humid environment.
متن کامل
Effects of acute supplementation of Panax ginseng on endurance running in a hot & humid environment
BACKGROUND & OBJECTIVES Athletes in Malaysia need to perform in a hot and humid environment due to the climatic nature of the country. Chronic supplementation of Panax ginseng (PG) (a deciduous perennial plant belonging to the Araliaceae family) enhances physical performance. As the ergogenic effect of acute supplementation of PG on endurance performance has not been explored in the Malaysian p...
متن کاملEffects of Panax ginseng supplementation on physiology responses during endurance performance
Panax ginseng is the most commonly used ginseng in the diet and medicine in many Asian countries especially in China. It is categorized as an 'adaptogen' that helps to adapt against higher levels of stress and maintains a good health. In general, animal toxicity studies found that Panax ginseng is very safe with no teratogenicity or mutagenicity. However, data on the effect of Panax ginseng sup...
متن کاملEffects of acute supplementation of caffeine on cardiorespiratory responses during endurance running in a hot & humid climate.
BACKGROUND & OBJECTIVES Athletes in Malaysia need to perform in a hot and humid climate. Chronic supplementation of caffeine on endurance performance have been studied extensively in different populations. However, concurrent research on the effects of acute supplementation of caffeine on cardiorespiratory responses during endurance exercise in the Malaysian context especially in a hot and humi...
متن کاملThe Effect of Acute Caffeine Consumption in a Dehydration and Hot and Humid conditions on Aerobic Function, Blood Pressure and Some Factors of the Immune System of Active Men
Background & objectives: Caffeine can affect many physiological functions of the body. The aim of this study was to investigate the response of aerobic function, blood pressure and some immune system factors of trained men to acute caffeine consumption in dehydrated condition and warm and humid environment. Methods: Thirty male athletes with a mean age of 26.6±3.9 years in dehydrated conditions...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of human ergology
دوره 40 1-2 شماره
صفحات -
تاریخ انتشار 2011