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		<title><![CDATA[Sportsoho 運動版圖: 「脂」多少]]></title>
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	  <guid isPermaLink='true'>https://www.sportsoho.com/pg/pages/view/193263/</guid>
	  <pubDate>Tue, 11 Aug 2009 00:49:58 +0800</pubDate>
	  <link>https://www.sportsoho.com/pg/pages/view/193263/</link>
	  <title><![CDATA[「脂」多少]]></title>
	  <description><![CDATA[<p>「唔該，灼菜少油！」「多士走油！」似乎這「少油」風氣已成為部分香港人的飲食習慣之一。然而，脂肪真是這麼可怕嗎？</p>
<p>脂肪不單令我們有氣有力，更可增加食物的味道。但緊記脂肪屬高熱量，故我們應控制分量。根據美國心臟協會的建議，脂肪應佔成年人每日熱量的25－35%以下。人體會利用脂肪作為能量，特別是運動時。但何時利用脂肪，則受到不同因素影響，包括運動程度、飲食以及碳水化合物在運動前或運動時的代謝情形。例如，在低強度及時間較長的運動中（如慢跑或游泳），儲存在脂肪組織的三酸甘油脂可分解成游離的脂肪酸，提供肌肉能量，並減少肌肉肝醣的損耗。但如果攝取過量脂肪而運動量又不足的話會導致肥胖，增加患上慢性疾病的危機，如糖尿病、心臟病、血壓高、血管硬化、睡眠窒息症及某些癌症等，所以應避免高脂肪食物如動物皮層、內臟、油炸食物、全脂奶品等及應確保每日最多6茶匙的食用油分量。</p>
<p>正面認識脂肪<br />脂肪是人體必需的營養素，能製造荷爾蒙，亦有助吸收脂溶性維他命如維他命A、D、E及K。脂肪主要分為飽和脂肪酸及不飽和脂肪酸，各有特質。飽和脂肪酸是在室溫下凝固的油，例如豬油、牛油和忌廉會令體內的膽固醇增加；而不飽和脂肪酸分別有單元不飽和及多元不飽和脂肪酸，是在室溫下呈液體狀的油，例如：芥花籽油、粟米油、葡萄籽油等。單元不飽和脂肪酸減低體內「壞」膽固醇而對「好」膽固醇則不受影響。多元不飽和脂肪酸會同時降低「好」及「壞」膽固醇。</p>
<p> </p>
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<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">&nbsp;</span></p>
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<td style="padding:0cm 5.4pt; width: 89.9pt;" width="120" valign="top">
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">飽和脂肪酸</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;"></span></p>
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<td style="padding:0cm 5.4pt; width: 122.85pt;" width="164" valign="top">
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">單元不飽和脂肪酸</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;"></span></p>
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<td style="padding:0cm 5.4pt; width: 138.15pt;" width="184" valign="top">
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">多元不飽和脂肪酸</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;"></span></p>
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<td style="padding:0cm 5.4pt; width: 104.5pt;" width="139" valign="top">
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">高密度脂蛋白</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;"></span></p>
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">(</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">「好」膽固醇</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">)</span></p>
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<td style="padding:0cm 5.4pt; width: 89.9pt;" width="120">
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">降低</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;"></span></p>
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<td style="padding:0cm 5.4pt; width: 122.85pt;" width="164">
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">不變</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;"></span></p>
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<td style="padding:0cm 5.4pt; width: 138.15pt;" width="184">
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">降低</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;"></span></p>
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<td style="padding:0cm 5.4pt; width: 104.5pt;" width="139" valign="top">
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">低密度脂蛋白</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;"></span></p>
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">(</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">「壞」膽固醇</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">)</span></p>
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<td style="padding:0cm 5.4pt; width: 89.9pt;" width="120">
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">增加</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;"></span></p>
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<td style="padding:0cm 5.4pt; width: 122.85pt;" width="164">
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">降低</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;"></span></p>
</td>
<td style="padding:0cm 5.4pt; width: 138.15pt;" width="184">
<p class="MsoNormal" style="line-height: 150%;"><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;">降低</span><span style="font-size: 12pt; line-height: 150%; font-family: PMingLiU;"></span></p>
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<p>「好」膽固醇能將血液中的膽固醇帶回肝臟分解，以加以利用，從而減低患有心血管疾病的風險。相反，「壞」膽固醇將膽固醇由肝臟運送到血管中，過高水平會造成動脈硬化，引致中風、心肌梗塞等疾病。所以，我們應小心選擇脂肪種類。</p>
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	  <pubDate>Tue, 11 Aug 2009 00:49:58 +0800</pubDate>
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