含杏仁果及紅甘藷葉之飲食介入對力竭性耐力運動後抗氧化及運動能力之影響

Effects of Almond and Purple Sweet Potato Leaves Diet on the Antioxidative and Physical Capacity after Exhaustive Endurance Exercise

林筱涵(Hsiao-Han Lin)

指導教授 ： 劉珍芳

臺北醫學大學/公共衛生暨營養學院/保健營養學研究所/碩士(2009年)

https://doi.org/10.6831/TMU.2009.00111

摘要

運動員應有適當的營養狀態以維持運動表現。本研究以有足夠能量以及富含抗氧化物質的食物作為營養介入，探討對運動選手體內抗氧化狀態、力竭運動後體內氧化壓力以及運動疲勞之調節效應。研究共招募 14 位大學男性校隊隊員。實驗期間受試者共攝取三種飲食，一開始先給予低多酚控制飲食 (Control diet, CO) 2 週，之後隨機交叉飲食介入，受試者隨機分成杏仁果飲食 (Almond diet, AL) 組 (杏仁果 30 g/餐，2 餐/天) 及杏仁果加紅甘藷葉飲食 (Almond and purple sweet potato leaves diet, AP) 組 (杏仁果 30 g/餐、紅甘藷葉 100 g/餐，2 餐/天)。經 2 週排空期後交換飲食，進行相同實驗流程。在各階段飲食介入期後，分別進行 75% VO2max 力竭運動與血液樣本採集，並測量血中抗氧化能力、氧化壓力、運動疲勞指標及各飲食中抗氧化物質含量。結果顯示，AL 及 AP 飲食之抗氧化物質含量及抗氧化能力顯著較 CO 飲食高；AP 飲食抗氧化物質含量顯著較 AL 飲食高。在血漿中抗氧化能力方面，與 CO 組相比，AL 組 FRAP 顯著較高；AP 組 FRAP、總多酚、維生素 E 濃度顯著較高。在力竭時間方面，AL 及 AP 組運動時間皆較 CO 組長。在疲勞指標方面，於運動後，與 CO 組相比，AP 組血糖及游離脂肪酸濃度顯著較高；血乳酸濃度 AL 及 AP 組皆顯著較低。本研究發現，攝取 AL 及 AP 飲食 2 週皆可增加運動員體內總抗氧化能力，且在運動後有較低的血乳酸濃度；而攝取 AP 飲食可更加提高體內抗氧化物質的含量及能力，且對於預防運動後所造成之氧化傷害及延緩運動疲勞的效果較有幫助。

關鍵字

力竭運動 ； 杏仁果 ； 紅甘藷葉 ； 抗氧化狀態 ； 疲勞

並列摘要

Athletes should maintain nutritional status in order to achieve optimal exercise performance. The purpose of this study was to investigate the intervention of adequate energy and higher polyphenol-contained diet on antioxidative capacity and physical fatigue of athletes after exhaustive endurance exercise. Fourteen male athletes from university varsity sport teams were recruited. Subjects prescribed three types of diets during the study. All subjects received a 2-wk control (CO) diet, followed by a randomized, cross-over diet intervention which included a 2-wk Almond (AL) diet or a 2-wk Almond and purple sweet potato leaves (AP) diet. There was a 2-wk wash-out period between two diet interventions. After each dietary intervention, each participant performed an acute bout of exhaustive endurance exercise (75% VO2max run to exhaustion). Blood samples were taken before and after the exercise and were analyzed for antioxidative status and fatigue markers. Food samples were analyzed for antioxidative content and capacity. AL and AP diets had higher antioxidative content compared with CO diet (p<.05), and AP diet showed a higher antioxidative capacity than AL and CO diet (p<.05). The total plasma antioxidative status was significantly higher in the AL and AP groups than in the CO group (p<.05). The concentration of plasma polyphenol and vitamin E was significantly higher in AP group (p<.05). Time of exhaustion was significantly longer (p<.05) in AL group (49.5 min) and AP group (47.4 min) than CO group (34 min). After the exercise test, blood sugar and plasma non-esterified fatty acids (NEFA) were significantly higher in AP group than in CO and AL group (p<.05). AL and AP groups showed less increase in plasma lactate level than CO group (p<.05).These results suggest that consumption of AL diet for 2-wk could increase the antioxidative status and delay exercise-related fatigue; the AP diet which combine higher-nutrient-density and polyphenol-rich food could increase the total antioxidative capacity and might have more beneficial effect on delaying exercise-related fatigue.

並列關鍵字

exhaustive exercise, almond ； purple sweet potato leaves ； antioxidative status ； fatigue

參考文獻

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