基礎代謝率? - 減肥
![Valerie avatar](/img/woman-biz.jpg)
By Valerie
at 2014-09-11T18:36
at 2014-09-11T18:36
Table of Contents
到底要不要吃到基代...不吃到基代會不會屎人? ( ′_>`)
簡單講,不妨將之視為一種風險控管、預防的概念
正如運動乃預防醫學...
以下文長慎入~
基代BMR 每日總攝取A 每日總攝取B
├─────────────│────────│────────│─────
人體維持生命現象的最低熱量 日常生活的活動如 各種的運動+重訓 多餘的攝取
需求,包括維持各種器官的正 上課、郊遊、洗澡
常功能、腺體的分泌、腸胃的 看書、上網、家務
蠕動、神經及細胞的運作、體 吵架、逛街、OGC..
溫的維持...等(如植物人..) ....所消耗的熱量
├───── 註1──────│─── 註2 ───│────────│─────
註1. 略拆一下基代用途,以部份器官來計算(此為因人而異的推估值,非絕對值):
成人主要 人體器官 器官組織
器官組織 組織重量 每日耗能
---------------------------------------------
腦 1300~1400g 312~365 大卡
心臟 300~ 425g 132~187 大卡
腎臟腰子 240~ 300g 211~255 大卡
肝臟 1400~1600g 280 大卡
肺臟 1600g 280 大卡
=============================================
每日小計最低消費: 1215~1367大卡(只有腦、心、肺、肝、腎)
以上算式是假設我們猶如植物人般躺在床上動也不動,
而且只有腦心肺肝跟腰子在運作而已哦......
還不包括其它臟器、肌肉、組織、骨骼、髮膚、血管神經系統、腺體分泌、
大腸包小腸(誤)、有的沒的阿哩阿紮......
另外,因為真正需要熱量與營養的是淨體重,而非體脂(脂肪組織)
所以一般而言是拿體脂率來代算基礎代謝比較保險
註2.以膳食療養學中提及,若健康減重以每週減輕0.5~1.0kg為原則
(以免引起嚴重飢餓、神經衰弱、雞皮鶴髮、急性痛風、身體虛弱、免疫力低下等)
那麼再以每1kg≒7700大卡計算的話,
1週可減少約 3850~7700 大卡 = 1日就減少約 550~1100 大卡
而一般網路或臨床衛教計算總攝取熱量為以下兩種公式:
2.1、BEE(Basal Energy Expenditure, 基礎能量消耗) x 活動因子 x 壓力因子
男:BEE=66+13.7W+5H-6.8A
女:BEE=655+9.6W+1.8H-4.7A
W:體重(kg)/H:身高(cm)/A:年齡
2.2、體重 x 工作強度因子 => 臨床醫護人員衛教上較常使用
每公斤體重所需熱量(單位:大卡)
活動量 體重過重 理想體重 體重不足
BMI>24 18.5<BMI<24 BMI<18.5
==================================================
臥床 20 20~25 30
輕度 20~25 30 35
中度 30 35 40
重度 35 40 45
註:上述計算方式可參考 http://tinyurl.com/n4wradf
或參考精華區:z-13-2-2-1-8.◇如何計算基礎代謝率與每日消耗熱量(TDEE)
試著將 2.1 或 2.2 算出來的結果減去 550~1100 中的數字
通常都會接近 基代+200~300大卡 的數字
(SO敝版或在下已幫大家簡化公式成「BMR+200~300」,回文逕以此區間數值建議之)
總之,減少的熱量,要嘛單純從飲食減少,或是飲食+運動雙管齊下
比如說,以熱量觀點:減少攝取550大卡=減少攝取300大卡+運動消耗250大卡
而,若排除特殊目的增重,以一般狀況而言,在減重階段中(BMR與體重正相關)
▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ a長期爆量飲食
巨肥
▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ b階段之BMR+300大卡
胖子
▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ c階段之BMR+300大卡
有線條的胖子
▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ d階段之BMR+300大卡
精實化
▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ e階段之BMR+300大卡
竹竿化
▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇ f階段之BMR+300大卡
仙樂飄飄
a~f是根據每一段期間之主客觀依據而為之 循序漸進的階段式或階梯式調整
(詳見置底 ★ m2510/21 reneeviolet □ [心得] 新手減肥PDCA345)
以上,這樣的 循序漸進的階段式或階梯式調整 有什麼好處?
除了註2提過的,
一來,不至於不知如何拿捏進食量或不小心過低熱量致使身體出狀況
二來,以加法建構的觀念,好過刪減消去的做法(一步減,步步減→吃少吃少吃更少)
如果一下子從a的食量減到f的食量,比較可能是快速啟動人體防呆模示(節能省碳)
況且每個階段之間的過渡期(停滯期),是人體為了活下去而啟動能量重新分配
如果一開始就直接從a食量砍到f的量,遇到問題之後怎麼辦?VLCD或不吃嗎?
(極低熱量節食Very Low Calorie Diet 或 Fad diets,易提高膽結石與心臟疾病風險)
別忘了,
體型肥胖的人 => 快速瘦身或過度減肥 => 短暫瘦身成效很快,但也會進入快速
累積脂肪的惡性循環。
(短多長空?切入節能省碳模式?)
還有造成嚴重飢餓、神經衰弱、雞皮鶴髮、急性痛風、身體虛弱、免疫力低下等問題
(沒感覺有傷害≠沒造成傷害,別用意志力強姦身體健康)
比如說:體組織崩解產生大量嘌呤+飲水不足+激烈運動使乳酸↑而阻礙尿酸排泄
=血尿酸值上升而誘發急性痛風
簡單講,
偷挖豬公一次挖太多一下子就被抓到了,你還挖個屁?
要偷就慢慢偷,爸媽一邊存你一邊偷,可以偷很久.... ( ̄艸 ̄")
最後...還是請大家不厭其煩的再看一遍...
基礎代謝(BMR)是隨時、每天都在左右變化的....
而一般回待批的菜單文會建議初期吃多少、怎麼吃、怎麼分配.....
主要是希望能確立當事人尊定穩固的正確飲食觀
及取得個人體質動態平衡的熱量需求經驗參考值
以便爾後(一般是4~6週或up)根據新的體重與體脂率數據變化來決定調整計劃方向
因此
看是要直接吃到十分飽、八分飽、或N分飽....都ok啊
重點是希望藉由一段時間(4~6週)觀測體重與體脂率數據變化來決定調整計劃方向
然後呢~
計算熱量、分析營養均衡的分配,其實是一個學習的過程
因為很多人並不清楚什麼樣叫做「吃太多」
(Ex.雞排珍奶不行嗎?我同學常常吃也沒胖啊?!)
什麼樣又叫做「吃太少」
(Ex.我並不覺得仙女餐吃得太少啊!)
什麼又叫做飲食不均衡
(Ex.好多人都說減肥不能吃澱粉!所以我也不吃澱粉!)
從生活中隨手易取得的食物、計算熱量和分配營養比例
是一個比較容易建立起客觀標準的方法
這對網路溝通來說特別重要 → 因為隔著網路有太多因素觀察不到
沒有客觀標準的話 很難做出任何有意義的建議
再來,為什麼說他是一個「過程」,
因為除了專業的營養師之外
一般人不可能一輩子都在算熱量的
當我們藉由算熱量、看食品營養表,瞭解到什麼樣的食物會有什麼樣的熱量與營養
自己的身體又要吃多少才足夠,吃多少會過剩
進而內化成一種直覺,這時候就可以不必算熱量了
只要憑著被訓練過而生的直覺(Ex.照表操課、大家回的推文、菜單文)去判斷
並且觀察自己身體一段時間的變化就可以了(Ex.主觀感受+客觀指標變化)
久而久之,走進商店或餐廳,
自然而然地就知道如何選擇或拿取適合自己份量的食物
其實,一般體型正常的人,大多都會有這樣的飲食直覺(如果可以這樣子稱呼的話)
但是對體型不正常的人來說(不管過胖還是過瘦)
很可能他的飲食直覺是偏頗、有問題的
必須藉由客觀的標準,才能知道他的飲食直覺是否有問題,進而修正他的飲食習慣
再者,
認知的差距,是誤會的開始
一樣一句話,最怕各自表述、各自解讀 => 當然出來的結果也就無法盡如人願
比如說飲食控制時,
控制熱量,也是有底限的 => 每日攝取至少要「基礎代謝+酌情考量」
基礎代謝代表「至少要吃這麼多」
但偏偏有人會曲解成「最多只能吃這麼多」
節制飲食(節食)應該是要「調整整體飲食結構」
但偏偏也有人會曲解成「只能吃這麼少」
若只吃身體需要的基礎代謝,但又因為額外的活動與運動而需要燃燒熱量時,
當身體接著要做一些基礎代謝的事情,卻發現熱量不太夠時,
它就先讓你沒精神(憂鬱、懶散、無精打采、消極......)
也容易爆氣(血糖不足、血清素不穩、身體在靠腰、煩燥)
因為精神不好、情緒不佳,你就會傾向於放棄一些事情不做
如此一來就會減少熱量的支出(惡性循環)
減少熱量支出的方式還有很多,這裡只講一個精神的問題
總之咧,當心中存在錯誤或帶有迷思的想法
接下來就肯定會逼迫自己「最多只能吃這麼多」
行為上會有意無意的 吃少→吃好少→吃超少→不吃或催吐.......(迴圈)
心理上就日積月累的 想吃→好想吃→超想吃→失控大爆食.......(迴圈)
生理上就反反覆覆的 變胖→減肥→變更胖→減肥→又更胖.......(迴圈)
所以,預防。
沒了。
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