還在緊盯左旋肉堿、CLA共軛亞油酸嗎? 不管是國(guó)內(nèi)健身愛好者還是補(bǔ)劑生產(chǎn)商,大家目前貌似還沒有開始重視起它,MCTs,中鏈甘油三酯,真正的天然減脂神器。 按我們常規(guī)的思維:不飽和脂肪豐富的食物有利于減肥、飽和脂肪多的食物不利于健康。 而實(shí)際上不少國(guó)外的運(yùn)動(dòng)員會(huì)直接吃椰子油(87%飽和脂肪),他們莫非腦子進(jìn)水了?
中鏈甘油三脂的天然來(lái)源: 1.椰子油-15% 2.棕櫚堅(jiān)果油-7.9% 3.芝士-7.3% 4.黃油-6.8% 5.牛奶-6.9% 6.酸奶-6.6% 中鏈甘油三脂(MCTs)是一種天然的脂肪,是含有不同鏈長(zhǎng)6-12碳原子的脂肪酸分子[1]。以前是用于治療脂肪吸收障礙的患者。 最近,MCTs變得非常流行,用于運(yùn)動(dòng)員的營(yíng)養(yǎng)補(bǔ)充劑,可以使體內(nèi)脂肪降低和增加肌肉量。 中鏈甘油三脂油在臨床試驗(yàn)中的結(jié)論各不相同,從5-50g都有。如果你認(rèn)為你的需求量不大,那你可以使用椰子油;如果你需要更多的量,則可以直接攝入中鏈甘油三脂。 中鏈甘油三脂的代謝效應(yīng)原理: MCTs的分子量比LCTs(長(zhǎng)鏈甘油三脂)的分子量小,因此MCTs水解更快且徹底。 中鏈與長(zhǎng)鏈脂肪酸利用的效率對(duì)比 減重的證據(jù) 在嚙齒類動(dòng)物的研究中顯示MCTs通過(guò)增加其產(chǎn)熱作用降低脂肪的堆積,在臨床研究中也得到證實(shí)。 舉例說(shuō)明,Hiroaki等人[2]表示使用中鏈甘油三脂油超過(guò)12周的被試者比起對(duì)照組下降了兩磅的體重。在健康男性人群飯后服用48g的MCTs比起基線值以及消耗LCTs的人群可以有一個(gè)更好的氧化消耗。[12] 即使低劑量的MCTs也有效果,例如,在健康人群中最高服用MCTs 10g可以增加飲食誘導(dǎo)的產(chǎn)熱反應(yīng),并且遠(yuǎn)高于LCTs。[13] 因此,Tsuji等人報(bào)導(dǎo)顯示MCTs,10g/天,12周在肥胖人群中可以降低體重和脂肪。 MCTs也同時(shí)可以抑制食欲,一個(gè)14天的臨床試驗(yàn)研究表明,在使用高M(jìn)CTs飲食的健康人群與中低MCTs飲食比較,能量攝入明顯降低。 MCTs對(duì)于運(yùn)動(dòng)健身的調(diào)節(jié)作用 動(dòng)物實(shí)驗(yàn)中顯示飲食中包含MCTs和運(yùn)動(dòng)降低身體脂肪堆積有累加效應(yīng)(相加作用)。[16]一個(gè)兩周的試驗(yàn)在非賽季的運(yùn)動(dòng)員飲食中加入少量(6g)MCTs并進(jìn)行中強(qiáng)度運(yùn)動(dòng)和高強(qiáng)度運(yùn)動(dòng)。 在連續(xù)兩小時(shí)的自行車騎行中,MCTs氧化提示可以直接和/或間接(通過(guò)乳酸)降低肌糖原的氧化[18]。 因此,它與增加脂肪利用能力與抗疲勞性有關(guān)[19]。訓(xùn)練良好的運(yùn)動(dòng)員增加脂肪的利用能力一點(diǎn)也不意外。[20] MCTs的副作用 MCTs在幾種動(dòng)物上短時(shí)間和長(zhǎng)時(shí)間的毒理測(cè)試在本質(zhì)上是無(wú)毒的。上限值在靜脈注射4.28g/kg體重/天,口服12500mg/kg體重/天。這些上限劑量在動(dòng)物身上都沒有不良事件發(fā)生。 所以做為一個(gè)相對(duì)安全而且切實(shí)際證明有效的成分,真心可以試一試。 更多詳細(xì)資料,請(qǐng)參考下方學(xué)術(shù)刊物了列表: [1].Greenberger, Norton J., and Thomas G. Skillman. “Medium-chain triglycerides.” New England journal of medicine 280.19 (1969): 1045-1058. [2].Tsuji, Hiroaki, et al. “Dietary medium-chain triacylglycerols suppress accumulation of body fat in a double-blind, controlled trial in healthy men and women.” The Journal of nutrition 131.11 (2001): 2853-2859. [3].Iber, F. L. “Relative rates of metabolism MCT, LCT and ethanol in man.”Zeitschrift fur Ernahrungswissenschaft. Journal of nutritional sciences. Supplementa 17 (1973): 9-16. [4].Calabrese, Carlo, et al. “A cross-over study of the effect of a single oral feeding of medium chain triglyceride oil vs. canola oil on post-ingestion plasma triglyceride levels in healthy men.”歡迎關(guān)注微信:sszzhh49 Alternative medicine review: a journal of clinical therapeutic 4.1 (1999): 23-28. [5].http:///2013/04/medium-chain-triglycerides-mcts/ [6].Hashim, Sami A., and Phienvit Tantibhedyangkul. “Medium chain triglyceride in early life: effects on growth of adipose tissue.” Lipids 22.6 (1987): 429-434. [7].Papamandjaris, Andrea A., Diane E. MacDougall, and Peter JH Jones. “Medium chain fatty acid metabolism and energy expenditure: obesity treatment implications.” Life sciences 62.14 (1998): 1203-1215. [8].St-Onge, Marie-Pierre, and Peter JH Jones. “Physiological effects of medium-chain triglycerides: potential agents in the prevention of obesity.” The Journal of nutrition 132.3 (2002): 329-332. [9].Scalfi, Luca, Alberto Coltorti, and Franco Contaldo. “Postprandial thermogenesis in lean and obese subjects after meals supplemented with medium-chain and long-chain triglycerides.” The American journal of clinical nutrition 53.5 (1991): 1130-1133. [10].Papamandjaris, A. A., et al. “Endogenous fat oxidation during medium chain versus long chain triglyceride feeding in healthy women.” International journal of obesity 24.9 (2000): 1158-1166. [11].St‐Onge, Marie‐Pierre, et al. “Medium‐chain triglycerides increase energy expenditure and decrease adiposity in overweight men.” Obesity research 11.3 (2003): 395-402. [12].Seaton, Timothy B., et al. “Thermic effect of medium-chain and long-chain triglycerides in man.” The American journal of clinical nutrition 44.5 (1986): 630-634. [13].Kasai, Michio, et al. “Comparison of diet-induced thermogenesis of foods containing medium-versus long-chain triacylglycerols.” Journal of nutritional science and vitaminology 48.6 (2002): 536-540. [14].Tsuji, Hiroaki, et al. “Dietary medium-chain triacylglycerols suppress accumulation of body fat in a double-blind, controlled trial in healthy men and women.” The Journal of nutrition 131.11 (2001): 2853-2859. [15].Stubbs, R. J., and C. G. Harbron. “Covert manipulation of the ratio of medium-to long-chain triglycerides in isoenergetically dense diets: effect on food intake in ad libitum feeding men.”International journal of obesity and related metabolic disorders: journal of the International Association for the Study of Obesity 20.5 (1996): 435-444. [16].Ooyama, Katsuhiko, et al. “Combined intervention of medium-chain triacylglycerol diet and exercise reduces body fat mass enhances energy expenditure in rats.” Journal of nutritional science and vitaminology 54.2 (2008): 136-141. [17].Nosaka, Naohisa, et al. “Effect of ingestion of medium-chain triacylglycerols on moderate-and high-intensity exercise in recreational athletes.” Journal of nutritional science and vitaminology 55.2 (2009): 120-125. [18].Van Zyl, C. G., et al. “Effects of medium-chain triglyceride ingestion on fuel metabolism and cycling performance.” Journal of Applied Physiology 80.6 (1996): 2217-2225. [19].V. Lambert, E., et al. “Nutritional strategies for promoting fat utilization and delaying the onset of fatigue during prolonged exercise.” Journal of sports sciences 15.3 (1997): 315-324. [20].Sidossis, Labros S., Robert R. Wolfe, and Andrew R. Coggan. “Regulation of fatty acid oxidation in untrained vs. trained men during exercise.” American Journal of Physiology-Endocrinology And Metabolism 274.3 (1998): E510-E515. [21].Traul, K. A., et al. “Review of the toxicologic properties of medium-chain triglycerides.” Food and chemical toxicology 38.1 (2000): 79-98. [22].Goldberg, Alyse S., and Robert A. Hegele. “Severe hypertriglyceridemia in pregnancy.” The Journal of Clinical Endocrinology & Metabolism 97.8 (2012): 2589-2596. [23].http://www./vitamins-supplements/ingredientmono-915-medium chain triglycerides.asp |
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