張慶玲,胥 秀,褚玲玲,金 燕
體育活動(dòng)與神經(jīng)性厭食癥關(guān)系的研究進(jìn)展
張慶玲,胥 秀,褚玲玲,金 燕
介紹了神經(jīng)性厭食癥及體育活動(dòng)的概念,并闡述了體育活動(dòng)與神經(jīng)性厭食癥的關(guān)系,旨在為指導(dǎo)厭食癥病人合理運(yùn)動(dòng)提供證據(jù)。
神經(jīng)性厭食癥;體育活動(dòng);過(guò)度活動(dòng);進(jìn)食障礙
神經(jīng)性厭食癥(anorexia nervosa,AN)是一種進(jìn)食障礙,其發(fā)病率為0.5%~1.0%,多見(jiàn)于女性,特別是青少年和年輕成年人,85%于13歲~20歲發(fā)病,嚴(yán)重影響了病人的身心健康,且造成沉重的經(jīng)濟(jì)負(fù)擔(dān)[1-2]。AN病人發(fā)病10年內(nèi)死亡率為5%~10%[3],AN病人的高發(fā)病率和死亡率引起了醫(yī)學(xué)界的廣泛關(guān)注。美國(guó)精神病協(xié)會(huì)推薦的對(duì)厭食癥的治療包括營(yíng)養(yǎng)康復(fù)、心理干預(yù)和藥物治療[4],但效果并不確定。在AN病人中,相當(dāng)一部分可能有過(guò)度的體育活動(dòng)。因此,在臨床工作中,對(duì)AN病人的治療通常不開(kāi)運(yùn)動(dòng)處方,有些病人甚至被要求嚴(yán)格臥床休息。但是,過(guò)度限制體育運(yùn)動(dòng)又會(huì)帶來(lái)其他的風(fēng)險(xiǎn),如骨密度下降、肌肉力量減弱等。目前,國(guó)外對(duì)厭食癥病人是否應(yīng)該堅(jiān)持體育活動(dòng)仍有較大的爭(zhēng)議,國(guó)內(nèi)鮮有體育活動(dòng)對(duì)AN病人治療效果的研究。基于此,本研究就體育活動(dòng)與AN病人的關(guān)系綜述如下。
AN最早于19世紀(jì)在法國(guó)提出,隨后被英國(guó)女王維多利亞的醫(yī)生解釋[5]。女性患病率比男性高10倍,病程可達(dá)幾個(gè)月至數(shù)年不等。厭食癥病人有3個(gè)主要臨床表現(xiàn):體重明顯下降,強(qiáng)烈地害怕肥胖或體重增加,對(duì)自己的體重或體型觀念扭曲。為了將體重降到某個(gè)低點(diǎn),AN病人會(huì)過(guò)度限制食物攝取,即使如此,仍擔(dān)心肥胖和體重增加或者雖然很瘦卻總認(rèn)為超重[3]。嚴(yán)重營(yíng)養(yǎng)不良和體重降低是AN的核心癥狀[6]。AN分兩種亞型:一種是限制型,主要是通過(guò)過(guò)度限制能量攝入而使體重下降;另一種是暴食/清除型,其特點(diǎn)是周期性暴食和清除行為,如自我誘導(dǎo)嘔吐、瀉藥、灌腸劑或利尿劑的濫用等。病人可能同時(shí)并存兩種亞型,也可能在病程中出現(xiàn)癥狀轉(zhuǎn)化,如從嚴(yán)格的限制進(jìn)食為主的癥狀轉(zhuǎn)變?yōu)樯窠?jīng)性貪食癥[7]。AN病人可能發(fā)生生命體征異常,如心率慢、血壓低以及異常的實(shí)驗(yàn)室檢查結(jié)果如貧血、骨密度下降和心電圖變化,嚴(yán)重時(shí)會(huì)發(fā)生多器官功能衰竭[2,8]。AN病人身體的異常主要是繼發(fā)于不良的飲食習(xí)慣和受損的營(yíng)養(yǎng)狀態(tài)。因此,隨著健康的進(jìn)食習(xí)慣和營(yíng)養(yǎng)的恢復(fù),大多數(shù)異常情況可以逆轉(zhuǎn),而減少的骨密度可能是個(gè)例外[9]。厭食癥常常與其他重要的精神疾病共存,這些共存的疾病包括焦慮、抑郁、強(qiáng)迫以及社會(huì)心理功能損害。因?yàn)槲镔|(zhì)濫用、自殺和營(yíng)養(yǎng)不良所致AN 病人的死亡率是普通人群的6倍[8]。
體育活動(dòng)指骨骼肌產(chǎn)生的任何需要耗能的身體活動(dòng),包括娛樂(lè)或休閑時(shí)間的身體活動(dòng)、走路或騎車、職業(yè)活動(dòng)(工作)、家務(wù)、玩游戲、運(yùn)動(dòng)或有計(jì)劃的日常鍛煉、家庭活動(dòng)和社區(qū)活動(dòng)[10]。適度的體育活動(dòng)能夠減少冠心病、高血壓、腦卒中、抑郁等風(fēng)險(xiǎn)[11-12]。目前,在糖尿病、肥胖、心血管疾病等慢性病病人中開(kāi)展體育活動(dòng)已經(jīng)成為共識(shí)[13]。同時(shí),對(duì)于體質(zhì)較差、營(yíng)養(yǎng)不良的病人,將體育活動(dòng)和營(yíng)養(yǎng)治療相結(jié)合,有利于身體機(jī)能的恢復(fù)。也有學(xué)者提出:健康運(yùn)動(dòng)應(yīng)以質(zhì)量而不是數(shù)量定義,這主要表現(xiàn)在3個(gè)方面:一是為了恢復(fù)個(gè)體的精神而不是使個(gè)體感到耗竭;二是為了增強(qiáng)心身的連接而不是誘導(dǎo)身心分離;三是用來(lái)減輕心身壓力而不是產(chǎn)生更多壓力。世界衛(wèi)生組織已公布了以證據(jù)為基礎(chǔ)的體育鍛煉指南,建議每周至少150 min中等強(qiáng)度有氧運(yùn)動(dòng)或75 min高強(qiáng)度有氧運(yùn)動(dòng)或兩者的等量結(jié)合[14-15]。對(duì)AN病人而言,首先讓人想到的運(yùn)動(dòng)可能是過(guò)度運(yùn)動(dòng),可以從3個(gè)維度描述其特點(diǎn):一是鍛煉的頻次或量,每天鍛煉時(shí)間多于1 h,1周鍛煉6 d或以上,持續(xù)時(shí)間大于1個(gè)月;二是強(qiáng)迫鍛煉,如果不鍛煉到一定的量就會(huì)難受;三是鍛煉的動(dòng)機(jī)不是以身體健康、娛樂(lè)為目的,而是以控制體重為目的[16-17]。對(duì)過(guò)度體育活動(dòng)與健康體育活動(dòng)的時(shí)間、頻率和強(qiáng)度并沒(méi)有確定的界限。也有人提出,是否過(guò)度鍛煉并不在于鍛煉的量而在于鍛煉的強(qiáng)迫性[18]。與鍛煉的量相比,鍛煉的強(qiáng)迫性能更好地預(yù)報(bào)進(jìn)食障礙??偟膩?lái)說(shuō),過(guò)度鍛煉的顯著特點(diǎn)就是大量的體育活動(dòng)且鍛煉具有強(qiáng)迫性[19-21]。在關(guān)于厭食癥的文獻(xiàn)中,對(duì)過(guò)度活動(dòng)也有不同的術(shù)語(yǔ),如過(guò)度的體育活動(dòng)(excessive/high level physical activity)、強(qiáng)迫鍛煉(compulsive exercise)、活動(dòng)過(guò)度(hyperactivity)等。
3.1 過(guò)度體育活動(dòng)與AN的關(guān)系 AN病人通常伴有體育活動(dòng)的顯著增加[6]。據(jù)報(bào)道:25%~80%的AN病人在入院治療前有過(guò)度的體育鍛煉[22-24]。另有研究表明:體育活動(dòng)增加且不伴能量或大量元素?cái)z入變化的行為與年輕女性AN病人需要入院治療有很大的關(guān)系。進(jìn)行過(guò)多體育鍛煉的厭食癥病人在運(yùn)動(dòng)推遲時(shí)常有嚴(yán)重的負(fù)罪感且伴隨對(duì)體重增加的極度擔(dān)心。他們十分厭惡脂肪并承認(rèn)鍛煉的主要目的是為了減輕體重和保持體形[23]。有學(xué)者認(rèn)為:過(guò)度活動(dòng)是AN的早期臨床癥狀之一,而女性的過(guò)度活動(dòng)是進(jìn)食障礙的重要危險(xiǎn)因素[25-26]。過(guò)度活動(dòng)對(duì)AN病人產(chǎn)生較大的負(fù)面影響,如骨關(guān)節(jié)或肌腱損傷。許多AN病人有發(fā)生骨折和激素失衡等并發(fā)癥的風(fēng)險(xiǎn),且這些并發(fā)癥可能會(huì)因?yàn)檫^(guò)度體育鍛煉而加重。有研究發(fā)現(xiàn):體育活動(dòng)對(duì)體重和節(jié)食行為都有直接的影響。在一項(xiàng)連續(xù)3年的住院記錄分析中發(fā)現(xiàn),過(guò)度活動(dòng)會(huì)影響AN病人的治療和康復(fù),從而增加病人住院時(shí)間[27]。過(guò)度活動(dòng)是已經(jīng)康復(fù)的AN病人復(fù)發(fā)的高風(fēng)險(xiǎn)因素[28]。過(guò)度活動(dòng)的AN病人具有更加焦慮、抑郁、自負(fù)、完美主義、缺乏快感、自感身體形象差、缺乏自信的特點(diǎn)。有研究表明:AN病人在恢復(fù)期間的過(guò)度活動(dòng)經(jīng)常與其他疾病如強(qiáng)迫癥等共存。Bamber等[29]研究認(rèn)為:只有過(guò)度活動(dòng)而沒(méi)有厭食癥者停止運(yùn)動(dòng)后,除了月經(jīng)不正常外(所有被試者均為女性),在人格、日常情緒方面和正常人沒(méi)有差別。而既有過(guò)度活動(dòng)又有厭食癥者在停止運(yùn)動(dòng)后出現(xiàn)了很多的戒斷癥狀,如心理障礙水平升高、神經(jīng)質(zhì)、易沖動(dòng)、低自尊、過(guò)度的關(guān)注體型和體重、社會(huì)介入困難等;Estok等[30]認(rèn)為活動(dòng)過(guò)度和AN都是因?yàn)榕院ε路逝衷斐傻慕Y(jié)果,是女性想變瘦的方法。基于過(guò)度運(yùn)動(dòng)可能在厭食癥發(fā)病機(jī)制中起著重要作用,臨床醫(yī)生經(jīng)常試圖限制這些病人運(yùn)動(dòng)[31],他們希望通過(guò)限制活動(dòng)使體重快速增加[32]。但是矯枉不宜過(guò)正,如何調(diào)整不健康的運(yùn)動(dòng)水平是治療厭食癥的關(guān)鍵環(huán)節(jié)。
3.2 適度體育活動(dòng)對(duì)AN病人的治療效果 盡管有規(guī)律的、適度的運(yùn)動(dòng)對(duì)病人和普通人群的健康有好處,體育活動(dòng)可能通過(guò)增加瘦體重在厭食癥的管理中發(fā)揮重要作用,并且為有運(yùn)動(dòng)傾向的病人提供了一個(gè)出口,減少了焦慮和抑郁,塑造了良好的身材,改善了社會(huì)行為,但目前為止運(yùn)動(dòng)治療并沒(méi)有被正式納入AN的治療方案。這可能因?yàn)檫^(guò)度鍛煉引起較高的AN患病率[33]導(dǎo)致部分研究人員專注于運(yùn)動(dòng)的負(fù)面影響而忽略了其潛在的治療作用。Hausenblas等[34]認(rèn)為持有“鍛煉對(duì)AN病人不利”觀點(diǎn)的人可能對(duì)運(yùn)動(dòng)過(guò)度時(shí)如何減少運(yùn)動(dòng)或沒(méi)有運(yùn)動(dòng)和運(yùn)動(dòng)極少時(shí)如何促進(jìn)運(yùn)動(dòng)缺乏深刻的理解。Vanderlinden等[35]認(rèn)為:運(yùn)動(dòng)治療是針對(duì)AN的具有較大發(fā)展?jié)摿Φ闹委煼绞健_\(yùn)動(dòng)治療包括有氧運(yùn)動(dòng)、阻力訓(xùn)練、放松訓(xùn)練、瑜伽、按摩或世界聯(lián)盟規(guī)定的這些治療的組合[36]。20世紀(jì)80年代,Vandereycken等[37]建議在厭食癥的治療計(jì)劃中增加適宜的體育活動(dòng)包括瑜伽、太極、舞蹈等運(yùn)動(dòng)項(xiàng)目。體重增加是厭食癥病人治療的主要結(jié)局指標(biāo),其他的結(jié)局指標(biāo)包括厭食癥病人心理特征(如對(duì)身體不滿意和過(guò)度追求變瘦)的變化、減少過(guò)度運(yùn)動(dòng)行為等,精神病學(xué)的結(jié)局指標(biāo)包括減輕抑郁和焦慮[38]。Vincent Thien等[39]進(jìn)行了階梯運(yùn)動(dòng)療法治療AN病人的初步研究,結(jié)果表明階梯運(yùn)動(dòng)療法提高了病人的生活質(zhì)量,而且沒(méi)有影響到體重的恢復(fù)和體脂的增加。一個(gè)包含8項(xiàng)隨機(jī)對(duì)照試驗(yàn)研究的系統(tǒng)評(píng)價(jià)表明:有氧運(yùn)動(dòng)和阻力訓(xùn)練能顯著增加厭食癥病人的肌肉力量、體重指數(shù)和體脂率。另外,有氧運(yùn)動(dòng)、瑜伽、按摩等可降低AN病人進(jìn)食病理和抑郁癥狀得分[40]。相關(guān)數(shù)據(jù)顯示:適當(dāng)?shù)捏w育活動(dòng)對(duì)厭食癥病人恢復(fù)體重、提高自我形象滿意度、改善情緒狀態(tài)、提高生活質(zhì)量起到較大的促進(jìn)作用[41]。而且,適當(dāng)?shù)捏w育活動(dòng)在AN病人治療期間是安全的,不會(huì)因?yàn)殄憻捪臒崃慷绊戵w重的增加[40]。Fernandez-del-Valle等[42-44]進(jìn)行了阻力訓(xùn)練增強(qiáng)厭食癥病人的肌肉力量的隨機(jī)對(duì)照研究以及阻力訓(xùn)練對(duì)青少年厭食癥病人人體測(cè)量學(xué)數(shù)據(jù)的影響研究,結(jié)果表明:在對(duì)厭食癥病人進(jìn)行為期8周的治療中,增加低強(qiáng)度的抵抗訓(xùn)練后體重指數(shù)和體脂率比常規(guī)治療均有提高。也有報(bào)道稱,AN病人經(jīng)過(guò)8周阻力訓(xùn)練后,在體重指數(shù)、身體質(zhì)量、體脂率與未參加訓(xùn)練的病人比較差異無(wú)統(tǒng)計(jì)學(xué)意義[45]。一項(xiàng)關(guān)于體育活動(dòng)對(duì)AN病人運(yùn)動(dòng)能力(耐力時(shí)間、耗氧量、峰值氧消耗、心率)的研究表明:體育活動(dòng)能夠提高肌肉力量和敏捷性,促進(jìn)骨骼生長(zhǎng),從而有利于運(yùn)動(dòng)能力發(fā)展[46]。骨密度低下是神經(jīng)性厭食癥常見(jiàn)的并發(fā)癥。有研究認(rèn)為:適量的體育活動(dòng)能夠有效緩解骨密度下降癥狀,預(yù)防女性AN病人的骨質(zhì)疏松[47]。
過(guò)度運(yùn)動(dòng)可能在厭食癥發(fā)病機(jī)制中起重要作用,因此,解決不健康的體育活動(dòng)是AN治療的關(guān)鍵。適度的體育活動(dòng)有利于結(jié)局指標(biāo)向好的方向改變,體育活動(dòng)是能量消耗的決定性因素,也是能量平衡和體重控制的基礎(chǔ)。因此,體育活動(dòng)增加時(shí)能量消耗也增加,這表明體育活動(dòng)的水平應(yīng)當(dāng)與食物攝入量相匹配[46]。雖然國(guó)外學(xué)者針對(duì)體育活動(dòng)對(duì)AN病人治療效果進(jìn)行了研究,但在神經(jīng)性厭食癥病人的體育活動(dòng)強(qiáng)度、頻次、類型上還有待進(jìn)一步的系統(tǒng)評(píng)價(jià)和隨機(jī)對(duì)照研究。目前,國(guó)內(nèi)在這方面的研究甚少,在臨床工作中應(yīng)針對(duì)具體的AN病人制定個(gè)性化的體育活動(dòng)治療方案。
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(本文編輯范秋霞)
Research progress on relationship between sports activity and anorexia nervosa
Zhang Qingling,Xu Xiu,Chu Lingling,etal
(Xinqiao Hospital of Third Military Medical University,Chongqing 400037 China)
It introduced the concept of anorexia nervosa and sports activities,and expounded the relationship between sports activities and anorexia nervosa,so as to provide evidences for rational movement of anorexia nervosa patients.
anorexia nervosa;sports activity;hyperactivity;eating disorders
2016年新橋醫(yī)院院級(jí)基金項(xiàng)目,編號(hào):2016XQHLYG-01。
張慶玲,主任護(hù)師,碩士研究生,單位:400037,重慶新橋醫(yī)院;胥秀、褚玲玲、金燕單位:400037,重慶新橋醫(yī)院。
信息 張慶玲,胥秀,褚玲玲,等.體育活動(dòng)與神經(jīng)性厭食癥關(guān)系的研究進(jìn)展[J].護(hù)理研究,2017,31(26):3235-3238.
R473.57
A
10.3969/j.issn.1009-6493.2017.26.006
1009-6493(2017)26-3235-04
2017-01-24;
2017-08-13)