茶是一種具鎮靜及提神作用的飲料,飲用者遍佈世界各地,而總茶葉生產量預計在2027年會達到三百六十萬噸。462Please respect copyright.PENANAi8MV6px1Wf
462Please respect copyright.PENANA1kOG8tjY43
有不少研究指出飲用長期綠茶有延壽及抗鬱的作用,是否百分之百真確仍有一定的爭議,而本篇文章只會側重講及一項與飲茶相關的有趣研究結果。462Please respect copyright.PENANA4wYeyDynz1
462Please respect copyright.PENANA9TAIlQocnF
462Please respect copyright.PENANA4lSq5woAuj
在講述研究結果之前,我們先行講及一下與茶葉有關的資訊。462Please respect copyright.PENANAavM1301199
以淨重量作計算的話,茶葉總共有42%左右是一種名為Epigallocatechin gallate462Please respect copyright.PENANAGzoTrrFJGB
(EGCG)的物質,而3%左右則為茶氨酸(L-Theanine)物質,兩者均能進入腦部裡頭,而其中之一的效果就是減低身體皮質醇(cortisol)含量,帶出鎮靜效果。462Please respect copyright.PENANAyAik1uULCe
462Please respect copyright.PENANAs7ospogkMj
概括來說,長期皮質醇偏高將會招來抑鬱症狀及肥胖的產生。若反應熱烈的話,可對皮質醇作另一篇深入淺出的文章。462Please respect copyright.PENANAx1Cvscd6ec
462Please respect copyright.PENANA96AA99cD9q
茶葉亦有5%左右為咖啡因(Caffeine),咖啡因當樣能進入腦部,有著阻截Adenosine與神經細胞某部位結合的效果,引致神經細胞持續運作,減低睡眠感。462Please respect copyright.PENANA0eYtFfDZqs
462Please respect copyright.PENANAz57JQR1MVC
462Please respect copyright.PENANAQAVqDCw3uv
(圖2)針對飲茶的研究多不勝數,不少亦有質量參差或帶有偏頗成份的研究。462Please respect copyright.PENANA30c1QYRZyt
而在一份相對上具有認受性的研究中(Ref1),文章作者找來75名18-55歲無吸煙習慣的男人,強迫他們進行為期4星期戒茶、戒咖啡及戒含咖啡因的飲品的日子,藉此調節他們身體內的咖啡因含量。462Please respect copyright.PENANAMDj3JaXfUH
462Please respect copyright.PENANAiaR8FCgVW0
462Please respect copyright.PENANAT6eVKU1mJh
4星期過後,他們將會分成兩組,在之後的6星期每日飲下與較早前4杯同色同味的飲料,一組為指定咖啡因份量的飲品,而另一組則為指定咖啡因份量及含有茶葉成份的飲料。462Please respect copyright.PENANAmpFVcPYV04
462Please respect copyright.PENANAnQZtSDRBcA
462Please respect copyright.PENANA0mwodftmJI
(圖3)6星期過後,受訪者將會進行兩項突擊壓力測試,過程中將會量度心跳及各項不同數據。462Please respect copyright.PENANAlJJ36xf0Ei
462Please respect copyright.PENANAJanLz9vUVE
462Please respect copyright.PENANAbsZ9GNvq6u
第一項壓力測試為3分鐘拍攝演講,受訪者將會隨機被派發高壓模擬情景題,例如面對失業或被指控店內偷竊等,他們有2分鐘準備的時間,之後便要對著攝錄機進行3分鐘的演講,記錄表現。462Please respect copyright.PENANAQ1CSntjOVp
462Please respect copyright.PENANAuftEeFVTlw
462Please respect copyright.PENANAr50PVkQnPs
(圖4)而第二項的測試為Mirror Tracing,如圖中一樣對著鏡子的方式畫星星。持續5分鐘。462Please respect copyright.PENANAnv7PzC11Iy
462Please respect copyright.PENANAkeFRNqbjW7
462Please respect copyright.PENANAR6ILYe2mnr
(圖5)是次研究中得出了不同數據,其中一項與皮質醇有關。462Please respect copyright.PENANAwG4DEgrZa6
462Please respect copyright.PENANAwsn0h6IiEM
462Please respect copyright.PENANAG2JPW5Jazg
他們發現飲茶者,口水皮質醇在高壓活動後50分鐘下跌73%左右,而沒有飲茶的組別則只下跌53%左右。462Please respect copyright.PENANAp9O68Vumqa
462Please respect copyright.PENANAxG25wFTilf
過往亦有不少研究指出飲茶能夠有助壓力過後的紓緩,以及對心情和認知方面起上一定的正面作用。462Please respect copyright.PENANAjMe8AvzgFt
462Please respect copyright.PENANANpjWwYX0NB
但這正面效果究竟是茶裡的那一項或是數項成份所引致而成,內裡的相關確實機制又是如何,現今還尚未有一套能獲取較大共識的機制。462Please respect copyright.PENANAkPNuk2eF0P
462Please respect copyright.PENANAPpBVOKHamj
無論如何,見字飲水,得閒飲茶。462Please respect copyright.PENANAjVKlGNwEVL
462Please respect copyright.PENANAoW6w3FE5Uv
462Please respect copyright.PENANAU9KkXEJMII
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。462Please respect copyright.PENANASAReyyoJ2C
462Please respect copyright.PENANAIkv5mqmUpR
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc462Please respect copyright.PENANAeiB0HuQV7w
462Please respect copyright.PENANAKbqdC4ffGR
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。462Please respect copyright.PENANACYkWv19l3a
462Please respect copyright.PENANACWClA48ZKd
Link:462Please respect copyright.PENANAb36oLWge16
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio462Please respect copyright.PENANAjtzzAM7Tbe
462Please respect copyright.PENANAwyDLQJFzvL
462Please respect copyright.PENANA7HNicYQ30e
有興趣接收科學資訊的話,歡迎follow IG: potatopigtongue。462Please respect copyright.PENANAP6JCKreTXZ
462Please respect copyright.PENANAfnpcpIpdKj
Ref1:https://pubmed.ncbi.nlm.nih.gov/17013636/462Please respect copyright.PENANAi6B2N92wN2
arrow_back
科普專欄–薯不揀單
more_vert
-
info_outline Info
-
toc Table of Contents
-
share Share
-
format_color_text Display Settings
-
exposure_plus_1 Recommend
-
Sponsor
-
report_problem Report
-
account_circle Login
Search stories, writers or societies
Continue ReadingClear All
What Others Are ReadingRefresh
X
Never miss what's happening on Penana!
科普專欄–薯不揀單
Author:
薯仔聞茱莉
ISSUE #62
深入淺出–飲茶導致皮質醇下降的研究
LIKES 4
READS 458
BOOKMARKS 148
campaign
Request update 0
Sponsor
Login with Facebook
or Sign up/Login to comment or bookmark!
Click to load the next chapter
X
After each update request, the author will receive a notification!
smartphone100 → Request update
X
Sponsor again
Click to login
Login first to show your name as a sponsor.
Thank you for supporting the story! :)
Please Login first.
×
Write down what you like about the story
×
Reading Theme:
Font Size:
Line Spacing:
Paragraph Spacing:
Load the next issue automatically
Reset to default
×
People Who Like This