【摘要】：研究目的:本文主要通過(guò)實(shí)驗(yàn)法,在服用/不服用中等劑量咖啡因的條件下研究咖啡因?qū)δ土λ刭|(zhì)產(chǎn)生的影響,以及咖啡因?qū)\(yùn)動(dòng)疲勞和心肺功能的影響。研究方法:本實(shí)驗(yàn)采用雙盲、隨機(jī)交叉實(shí)驗(yàn)設(shè)計(jì)。來(lái)自沈陽(yáng)體育學(xué)院體育教育專業(yè)的12名男性大學(xué)生(年齡,19.84±0.69y;身高,181.15±6.31cm;體重,74.82±6.29kg),自愿參加本次實(shí)驗(yàn)。12名研究對(duì)象分別在非咖啡因條件或咖啡因條件(6mg/kg)下進(jìn)行速度耐力測(cè)試和力量耐力測(cè)試,測(cè)試前1小時(shí)口服/不服咖啡因。速度耐力測(cè)試選用自行車運(yùn)動(dòng)方式,實(shí)驗(yàn)結(jié)束術(shù)后分別記錄每名研究對(duì)象運(yùn)動(dòng)至力竭的時(shí)間和最大運(yùn)動(dòng)負(fù)荷;監(jiān)控運(yùn)動(dòng)過(guò)程中主觀疲勞感覺(jué)、攝氧量、心率和呼吸商的變化;運(yùn)動(dòng)前后分別測(cè)量BRUMS心境量表、簡(jiǎn)單反應(yīng)時(shí)和選擇反應(yīng)時(shí)。力量耐力測(cè)試選用臥推的方式測(cè)量上肢力量,分別記錄臥推時(shí)上推和下拉過(guò)程中的平均肌肉耐力和最大肌肉耐力。研究結(jié)果:與非咖啡因條件相比,研究對(duì)象在咖啡因條件下運(yùn)動(dòng)至力竭的時(shí)間和最大輸出功率有顯著性提高(運(yùn)動(dòng)時(shí)間從781±145s到846±150s,P0.01;最大輸出功率從240±25w到253±26w,P0.05);在臥推測(cè)試中,平均肌肉耐力在咖啡因條件下較非咖啡因條件也有顯著性提高(上推從127±34ft-lb到163±41ft-lb,P0.01;下拉從210±57ft-lb到262±86ft-lb,P0.05);最大肌肉耐力在咖啡因條件下較非咖啡因條件也有顯著性提高(上推從193±32ft-lb到195±49ft-lb,P0.05;下拉從291±65ft-lb到322±91ft-lb,P0.01)。自行車運(yùn)動(dòng)過(guò)程中主觀疲勞感覺(jué)咖啡因條件與非咖啡因條件相比,在數(shù)值上有顯著性下降(從14.04±6.25到13.04±6.12,P0.01)。在BRUMS心境量表中,咖啡因條件的精力差值比非咖啡因條件也有顯著性下降(從-12±6.07到-18±5.81,P0.05)。然而,運(yùn)動(dòng)過(guò)程中最大攝氧量、最大心率和呼吸商并沒(méi)有顯著性差異(P0.05)。運(yùn)動(dòng)前后簡(jiǎn)單反應(yīng)時(shí)和選擇反應(yīng)時(shí)也沒(méi)有顯著性差異(P0.05)。結(jié)論:(1)服用咖啡因能夠提高體育教育專業(yè)大學(xué)生的耐力素質(zhì);(2)服用咖啡因能夠延緩體育教育專業(yè)大學(xué)生運(yùn)動(dòng)過(guò)程中產(chǎn)生的主觀疲勞感,但咖啡因?qū)\(yùn)動(dòng)前后心境的變化和神經(jīng)反應(yīng)影響小;同時(shí),咖啡因?qū)\(yùn)動(dòng)過(guò)程中心肺功能指標(biāo)的變化幾乎沒(méi)有影響。
[Abstract]:Objective: in this paper, the effects of caffeine on endurance quality, exercise fatigue and cardio-pulmonary function were studied under the condition of taking or not taking moderate dose of caffeine. Methods: double blind, random crossover design was used in this experiment. Twelve male college students (age, 19.84 鹵0.69 y; height, 181.15 鹵6.31 cm) were enrolled in this study. Weight, 74.822 鹵6.29 kg), volunteered to participate in the experiment. Twelve subjects were tested for speed tolerance and strength tolerance under decaf or caffeine condition (6mg/kg), taking caffeine orally or without caffeine one hour before the test. At the end of the experiment, the time from exercise to exhaustion and the maximum exercise load were recorded, and the changes of subjective fatigue sensation, oxygen uptake, heart rate and respiratory quotient were monitored. BRUMS mood scale, simple reaction time and selective response time were measured before and after exercise. The upper limb strength was measured by lying push, and the average muscle endurance and maximum muscle endurance were recorded during push-down and push-down respectively. Results: compared with decaf condition, the time of exercise to exhaustion and the maximum output power were significantly increased (exercise time from 781 鹵145s to 846 鹵150s, P 0.01; maximum output power from 240 鹵25w to 253 鹵26w, P 0.05), and the maximum output power was significantly higher than that under decaf condition (781 鹵145s to 846 鹵150s, P0.01; 240 鹵25w to 253 鹵26w, P0.05). In the horizontal push test, the average muscle endurance in caffeine was significantly higher than that in decaf (from 127 鹵34ft-lb to 163 鹵41 ft / b, P 0.01; from 210 鹵57ft-lb to 262 鹵86 ft / lb, P0.05). The maximal muscle endurance also increased significantly under caffeine condition (from 193 鹵32ft-lb to 195 鹵49 ft / lb, P 0.05; drop from 291 鹵65ft-lb to 322 鹵91 ft / lb, P0.01). Compared with decaf condition, the subjective fatigue sensation caffeine condition decreased significantly (from 14.04 鹵6.25 to 13.04 鹵6.12, P0.01). In BRUMS mood scale, the energy difference of caffeine condition was significantly lower than that of decaf condition (from-12 鹵6.07 to-18 鹵5.81, P0.05). However, there was no significant difference in maximal oxygen uptake, maximal heart rate and respiratory quotient during exercise (P0.05). There was no significant difference between simple reaction time and selective reaction time before and after exercise (P0.05). Conclusion: (1) caffeine can improve the endurance quality of college students majoring in physical education; (2) caffeine can delay subjective fatigue in physical education college students during exercise, but caffeine has little effect on mood change and nervous response before and after exercise. At the same time, caffeine had little effect on the changes of central pulmonary function during exercise.
【學(xué)位授予單位】：沈陽(yáng)體育學(xué)院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：G807.4

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相關(guān)期刊論文 前1條

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本文編號(hào)：2460450