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      規(guī)律性有氧運(yùn)動(dòng)對(duì)成年人血漿 白介素-6水平影響的Meta分析

      2015-02-14 02:32:14朱光輝李常青
      體育科學(xué) 2015年10期
      關(guān)鍵詞:白介素成年人有氧

      朱光輝,李常青,李 欣

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      規(guī)律性有氧運(yùn)動(dòng)對(duì)成年人血漿 白介素-6水平影響的Meta分析

      朱光輝1,李常青2,李 欣3

      目的: 評(píng)價(jià)規(guī)律性有氧運(yùn)動(dòng)對(duì)成年人血漿中IL-6濃度的影響效果。方法:電子檢索PubMed、Embase、Web of Science、萬方、維普和知網(wǎng)數(shù)據(jù)庫,檢索期限均從各個(gè)數(shù)據(jù)庫收錄起始年限起至2014年12月,全面收集規(guī)律性有氧運(yùn)動(dòng)影響成人血漿中IL-6濃度的隨機(jī)對(duì)照實(shí)驗(yàn)(RCT),Cochrane偏倚風(fēng)險(xiǎn)評(píng)估工具評(píng)價(jià)納入研究的方法學(xué)質(zhì)量,Stata 13.0軟件進(jìn)行統(tǒng)計(jì)分析。結(jié)果:共納入32個(gè)RCT,2 768個(gè)成年人,其中,慢性炎癥性疾病患者670人。納入研究中較高等級(jí)的方法學(xué)質(zhì)量的研究有10個(gè)、中等研究質(zhì)量12個(gè)、低等質(zhì)量10個(gè)。Meta分析結(jié)果顯示,規(guī)律性有氧運(yùn)動(dòng)可明顯降低成年人血漿中IL-6濃度,SMD=-0.42(95%CI:-0.62~-0.18,P=0.001),但異質(zhì)性較為明顯(I2=88.1%)。通過Meta回歸分析排除健康狀態(tài)及其他可能的混雜因素影響后,異質(zhì)性有所降低(I2=58.34%)。進(jìn)一步的亞組分析結(jié)果提示,規(guī)律性有氧運(yùn)動(dòng)對(duì)健康成年人血漿IL-6濃度的降低效果不明顯(SMD=-0.189,95%CI:-0.412~0.035,P=0.098),但對(duì)肥胖和炎癥相關(guān)的慢性病患者的降低效果顯著,其SMD(95CI%)分別為-0.593(-1.137~-0.05,P=0.032)和-0.717(-1.324~-0.123,P=0.021)。結(jié)論:規(guī)律性有氧運(yùn)動(dòng)能夠有效降低成年人血漿中IL-6濃度,尤其對(duì)炎癥性慢性病患者效果更為顯著,但由于異質(zhì)性和發(fā)表偏倚的影響,結(jié)論尚需開展更多高質(zhì)量的研究加以驗(yàn)證。

      規(guī)律性有氧運(yùn)動(dòng);成年人;IL-6水平;Meta分析

      慢性炎癥在許多非傳染性疾病如心腦血管疾病、糖尿病以及腫瘤等的病理過程中扮演重要角色。白細(xì)胞介素-6(Interleukin 6,IL-6)是人體內(nèi)一種重要的炎癥細(xì)胞因子和炎癥調(diào)節(jié)因子,主要由單核細(xì)胞、T細(xì)胞、B細(xì)胞以及巨噬細(xì)胞等多種細(xì)胞產(chǎn)生,在傳遞信息、激活與調(diào)節(jié)免疫細(xì)胞、介導(dǎo)炎癥反應(yīng)中起重要作用[26]?,F(xiàn)有研究表明,IL-6可促進(jìn)巨噬細(xì)胞對(duì)LDL的攝取,加速脂質(zhì)沉積從而促進(jìn)粥樣斑塊的形成[3,11,14];還可調(diào)節(jié)黏附分子及其他細(xì)胞因子如TNF-ɑ的表達(dá)與分泌,促進(jìn)炎癥反應(yīng);刺激基質(zhì)激酶合成,降解細(xì)胞外基質(zhì),從而誘導(dǎo)斑塊破裂,誘導(dǎo)心腦血管疾病的急性發(fā)作[13]。因而,IL-6濃度增高可能激發(fā)機(jī)體內(nèi)炎癥反應(yīng),參與多種炎癥性疾病的發(fā)生發(fā)展過程,其血漿中濃度已成為機(jī)體內(nèi)一個(gè)重要的炎性標(biāo)志。

      近年來,運(yùn)動(dòng)對(duì)炎癥因子IL-6影響的研究已成為運(yùn)動(dòng)免疫學(xué)中的一個(gè)熱點(diǎn),目前研究認(rèn)為,急性較大強(qiáng)度運(yùn)動(dòng)后即刻機(jī)體即刻血漿中IL-6水平表現(xiàn)為升高,其原因可能與運(yùn)動(dòng)導(dǎo)致肌細(xì)胞的機(jī)械性損傷,而損傷的組織碎片可能作為抗原激活巨噬細(xì)胞,而引起IL-6的合成與分泌增加有關(guān),但在24 h內(nèi)基本恢復(fù)到運(yùn)動(dòng)前水平[9,15],而規(guī)律性的有氧運(yùn)動(dòng)對(duì)IL-6水平的影響是增高還是降低,未見明確結(jié)論。為此,本研究對(duì)已發(fā)表的隨機(jī)對(duì)照實(shí)驗(yàn)進(jìn)行全面檢索,采用Meta分析方法系統(tǒng)地評(píng)價(jià)規(guī)律性有氧運(yùn)動(dòng)對(duì)成年人血漿中IL-6水平的影響效果,以期得到較為肯定的結(jié)論,為運(yùn)動(dòng)控制慢性炎癥提供證據(jù)支持。

      1 資料與方法

      1.1 文獻(xiàn)檢索

      檢索的電子數(shù)據(jù)庫包括PubMed、Wed of Science、Embase以及維普、萬方、知網(wǎng)。英文檢索詞為:exercise,aerobic exercise,physical activity,randomized controlled trial,RCT,inflammatory factor,inflammatory reaction,interleukin,interleukin 6,IL-6等;中文檢索詞為運(yùn)動(dòng)、有氧運(yùn)動(dòng)、活動(dòng)、炎癥因子、炎癥反應(yīng)、白介素、白細(xì)胞介素,隨機(jī)、對(duì)照、隨機(jī)對(duì)照實(shí)驗(yàn)等,檢索年限均從各數(shù)據(jù)庫收錄起始日期至2014年12月。

      文獻(xiàn)追溯:根據(jù)檢索到的文獻(xiàn)或綜述中所列出的相關(guān)參考文獻(xiàn),對(duì)其進(jìn)行追溯查找。

      1.2 文獻(xiàn)納入標(biāo)準(zhǔn)

      根據(jù)循證醫(yī)學(xué)DPICO原則,主要納入的研究設(shè)計(jì)為隨機(jī)對(duì)照實(shí)驗(yàn),交叉設(shè)計(jì)實(shí)驗(yàn)用第一階段資料;研究對(duì)象主要為健康成年人與慢性病患者,性別不限,但未滿18歲的青少年或兒童以及專業(yè)運(yùn)動(dòng)員除外;實(shí)驗(yàn)組的干預(yù)措施為有氧運(yùn)動(dòng)或在基礎(chǔ)治療(常規(guī)處理)基礎(chǔ)上的有氧運(yùn)動(dòng)干預(yù),且有氧運(yùn)動(dòng)的干預(yù)期限不少于1個(gè)月,排除一次性的急性運(yùn)動(dòng)研究;對(duì)照組為無運(yùn)動(dòng)干預(yù)或僅有基礎(chǔ)治療(常規(guī)處理);結(jié)局指標(biāo)為血漿中IL-6濃度,測(cè)量方法不限。

      1.3 文獻(xiàn)篩選

      從各個(gè)數(shù)據(jù)檢索得到文獻(xiàn)記錄后,統(tǒng)一導(dǎo)入文獻(xiàn)管理軟件Note Express 2.0進(jìn)行排重,之后,由兩位研究者獨(dú)立根據(jù)文獻(xiàn)納入標(biāo)準(zhǔn)進(jìn)行文獻(xiàn)篩選,其順序?yàn)橄乳喿x題目和摘要進(jìn)行初篩,得到可能合格的文獻(xiàn),然后,下載全文進(jìn)行精讀,評(píng)估其是否合格。篩選結(jié)束后將各自認(rèn)為合格的文獻(xiàn)進(jìn)行對(duì)比,對(duì)于兩者判斷結(jié)果不一致的文獻(xiàn)通過與第三者共同討論決定是否納入。

      1.4 數(shù)據(jù)提取和質(zhì)量評(píng)估

      兩名研究者采用自行設(shè)計(jì)的數(shù)據(jù)提取表格獨(dú)立提取合格文獻(xiàn)中的數(shù)據(jù)和研究特征信息,提取的內(nèi)容包括文獻(xiàn)的外部特征如題目、作者和發(fā)表年限,研究對(duì)象的特征如平均年齡、性別比例,樣本含量,研究的方法學(xué)特征,實(shí)驗(yàn)組和對(duì)照組的干預(yù)(處理)措施,有氧運(yùn)動(dòng)的運(yùn)動(dòng)方式、運(yùn)動(dòng)頻率和期限,結(jié)局指標(biāo)及其測(cè)量方法等。納入研究的方法學(xué)質(zhì)量評(píng)估采用Cochrane偏倚風(fēng)險(xiǎn)評(píng)估工具進(jìn)行[30],內(nèi)容主要有選擇性偏倚、測(cè)量偏倚、實(shí)施偏倚、報(bào)告偏倚以及其他偏倚等5個(gè)方面6個(gè)條目,判斷標(biāo)準(zhǔn)為低風(fēng)險(xiǎn)、不清楚和高風(fēng)險(xiǎn),并將研究質(zhì)量從高到低分為3個(gè)等級(jí):A級(jí):低度偏倚,即完全滿足4個(gè)及以上條目的質(zhì)量標(biāo)準(zhǔn)(低風(fēng)險(xiǎn)),發(fā)生偏倚的可能性較?。籅級(jí):中度偏倚,完全滿足2或3個(gè)條目的質(zhì)量標(biāo)準(zhǔn)(低風(fēng)險(xiǎn)),有發(fā)生偏倚的中度可能性;C級(jí):高度偏倚,其中,1個(gè)條目及以上標(biāo)準(zhǔn)完全不滿足(高風(fēng)險(xiǎn)),或只有1個(gè)或沒有條目的質(zhì)量標(biāo)準(zhǔn)完全滿足(低風(fēng)險(xiǎn)),有發(fā)生偏倚的高度可能性。

      1.5 統(tǒng)計(jì)學(xué)處理

      采用標(biāo)準(zhǔn)化均數(shù)差及其95%可信區(qū)間(95%CI)作用效應(yīng)尺度, Stata 13.0軟件進(jìn)行合并效應(yīng)分析。各研究間異質(zhì)性檢驗(yàn)采用χ2檢驗(yàn),P>0.1為無統(tǒng)計(jì)學(xué)異質(zhì)性,同時(shí)用I2值對(duì)異質(zhì)性的大小進(jìn)行定量評(píng)估,且I2<40%為低異質(zhì)性,40≤I2≤70%為中度異質(zhì)性,I2>70%為高度異質(zhì)性。當(dāng)無異質(zhì)性或低異質(zhì)性時(shí),采用固定效應(yīng)模型進(jìn)行Meta分析;當(dāng)異質(zhì)性較為明顯時(shí),采用隨機(jī)效應(yīng)模型進(jìn)行Meta分析[24]。異質(zhì)性的來源及控制采用亞組分析和Meta回歸進(jìn)行,發(fā)表偏倚采用Egger’s檢驗(yàn)。

      2 結(jié)果

      2.1 文獻(xiàn)檢索與篩選

      從各個(gè)數(shù)據(jù)庫中檢索得到文獻(xiàn)記錄數(shù)為2 246篇,導(dǎo)入文獻(xiàn)管理軟件NoteExpress 2.0去除重復(fù)收錄后為1 849篇,通過閱讀題目、摘要初篩后排除1 708篇,剩余可能合格文獻(xiàn)128篇,其中,從參考文獻(xiàn)中追溯得到的文獻(xiàn)15篇,進(jìn)一步閱讀全文后排除96篇,最終納入32個(gè)隨機(jī)對(duì)照研究(圖1),其中,23個(gè)研究來自美國或歐洲國家[16-19,21-23,27,28,31,32,34,36-41,43-45,47,48],9個(gè)研究來自國內(nèi)學(xué)者[1,2,4-8,10,12]。

      2.2 納入研究的基本特征與方法學(xué)質(zhì)量評(píng)價(jià)

      32個(gè)納入研究共包含2 768個(gè)成年人,其中,慢性病患者670人、肥胖對(duì)象68人,其余為健康成年人;18個(gè)研究的對(duì)比方式為有氧運(yùn)動(dòng)對(duì)比無運(yùn)動(dòng)干預(yù),14個(gè)為在基礎(chǔ)治療或常規(guī)處理的基礎(chǔ)上的有氧運(yùn)動(dòng)對(duì)比于相同的基礎(chǔ)治療或常規(guī)處理,納入研究的基本特征如表1所示。32個(gè)納入的研究中,其中10個(gè)研究的方法學(xué)質(zhì)量等級(jí)為A,12個(gè)為B,另外10個(gè)研究為C級(jí),其偏倚風(fēng)險(xiǎn)的評(píng)估結(jié)果如圖2所示。

      圖1 本研究納入文獻(xiàn)篩選流程及結(jié)果示意圖

      表1 本研究納入研究的基本特征一覽表

      Table 1 Basic Characteristics of Included Studies

      作者,及發(fā)表年份健康狀態(tài)n年齡(歲)X±SD性別M/F實(shí)驗(yàn)組的干預(yù)措施有氧運(yùn)動(dòng)強(qiáng)度有氧運(yùn)動(dòng)的頻率及時(shí)間對(duì)照組處理措施結(jié)局指標(biāo)/測(cè)量方法NicklasBJ,等,2004健康106T:68(7)C:68(5)14/39快步走+飲食控制50%~75%HRmax60min/次,3次/周,18月飲食控制IL-6/ELISAAuerbachP,等,2013健康2420~4024/0有氧耐力訓(xùn)練+飲食控制65%~85%HRmax30~45min/次,7次/周,12周飲食控制IL-6/流式FisherG,等,2011健康7220~410/72有氧訓(xùn)練+飲食控制60%~80%HRmax50min/次,3次/周,8周飲食控制IL-6/ELISAJonesSB,2013乳腺癌67T:56.4/9.6C:55.4/7.60/67快步走,瑜伽,動(dòng)力自行車等+基礎(chǔ)治療60%~80%HRmax50min/次,3次/周,6月基礎(chǔ)治療IL-6/ELISAVillarealDT,等,2006肥胖27T:69/5C:71/49/18耐力訓(xùn)練+飲食控制70%VO2max30min/次,3次/周,6月飲食控制IL-6/ELISAImayamaI,2012健康204T:58.1/5.0C:57.4/4.40/204跑步機(jī),劃船練習(xí)器,動(dòng)力自行車等70%~85%HRmax45min/次,5次/周,12月無運(yùn)動(dòng)干預(yù)IL-6/ELISAMessierSP,等,2013健康304T:65.6/6C:66/6217/87快步走,力量訓(xùn)練+飲食控制未說明50min/次,3次/周,18月飲食控制IL-6/ELISAMeretheHR,等,2007健康8545.1/2.5185/0快步走和慢跑未說明60min/次,3次/周,12月無運(yùn)動(dòng)干預(yù)IL-6/ELISAJanelsinsMC,等,2011乳腺癌19T:54.3/10.6C:52.7/6.670/19楊式太極拳+基礎(chǔ)治療未說明60min/次,3次/周,12周基礎(chǔ)治療IL-6/ELISAChristiansenT,等,2010健康41T:37.5/8C:35.6/720/20有氧運(yùn)動(dòng)500~600kcal消耗60~75min/次,3次/周,8周無運(yùn)動(dòng)干預(yù)IL-6/ELISAOberbachA,等,2008糖耐量異常40T:58.1C:59.119/2120min跑步和自行車,20min力量練習(xí)VO2max=28.6ml/kg/min40min/次,2次/周,12月無運(yùn)動(dòng)干預(yù)IL-6/ELISAThompsonD,等,2010健康40T:54/5C:52/440/0有氧日?;顒?dòng)50%~70%VO2max30min/次,3次/周,24周無運(yùn)動(dòng)干預(yù)IL-6/ELISAChoiKM,等,2012II型糖尿病75T:53.8/7.2C:55.0/6.00/75快步走,60%~80%HRmax60min/次,5次/周,12周無運(yùn)動(dòng)干預(yù)IL-6/ELISALisak,2012乳腺癌19T:54.3/3.55C:52.7/2.110/19楊式太極拳+基礎(chǔ)治療未說明60min/次,3次/周,12周基礎(chǔ)治療IL-6/ELISABakhtyarT,2011健康38T:61.4/6.9C:58.9/8.10/38快步走和慢跑65%HRmax20~30min/次3次/周,24周無運(yùn)動(dòng)干預(yù)IL-6/ELISAMichaelR,等,2012健康92T:70.7/5.9C:71.4/7.732/51太極拳未說明40min/次,3次/周,16周無運(yùn)動(dòng)干預(yù)IL-6/ELISABenoitJ,等,2009健康349T:57.3/6.6C:57.5/6.10/349跑臺(tái)運(yùn)動(dòng)50%VO2max3~4次/周,6月無運(yùn)動(dòng)干預(yù)IL-6/ELISAGordonF,等,2011健康142T:20-41C:20-410/142快走或慢跑+飲食控制65%~80%HRmax60min/次,3次/周,8周飲食控制IL-6/ELISAMariaL,等,2011II型糖尿病24T:52.1/8.71C:53.4/9.829/15跑臺(tái)運(yùn)動(dòng)VO2max=21.28ml/kg/min60min/次,3次/周,12周無運(yùn)動(dòng)干預(yù)IL-6/ELISAAkbarpour,等,2013健康60T:23.2/2.5C:22.7/2.760/0快走,慢跑60%~70%HRmax40min/次,3次/周,12周無運(yùn)動(dòng)干預(yù)IL-6/ELISAOliverS,等,2012外周血管病53T:68.4/7.5C:70.7/10.633/20快步走+基礎(chǔ)治療未說明50min/次,2次/周,6月基礎(chǔ)治療IL-6/ELISA

      續(xù)表 1

      注: T:實(shí)驗(yàn)組;C:對(duì)照組;M:男性;F:女性;ELISA:酶聯(lián)免疫法。

      圖2 本研究基于Cochrane偏倚風(fēng)險(xiǎn)評(píng)估工具的納入研究方法學(xué)質(zhì)量評(píng)介示意圖

      2.3 Meta分析結(jié)果

      2.3.1 合成分析

      由于各納入研究間血漿IL-6濃度的測(cè)量方法和表示單位不盡相同,因而采用標(biāo)準(zhǔn)化均數(shù)差(SMD)作為Meta分析的合并效應(yīng)尺度,結(jié)果顯示,有氧運(yùn)動(dòng)明顯降低成年人血漿中IL-6濃度(SMD=-0.42,95%CI:-0.67~-0.18,P=0.001,隨機(jī)效應(yīng)模型),與對(duì)照組相比有顯著的統(tǒng)計(jì)學(xué)意義,但各組間異質(zhì)性比較明顯,I2=88.1%(P異質(zhì)性<0.001,圖3)。

      2.3.2 Meta回歸分析

      為探討可能的異質(zhì)性來源,對(duì)可能引起異質(zhì)性的研究特征進(jìn)行單因素和多因素的Meta回歸分析。由單因素Meta回歸分析結(jié)果可知,除了研究對(duì)象的健康狀態(tài)以外(β=-0.245,P=0.033),其他研究特征對(duì)研究間異質(zhì)性沒有顯著影響(圖4)。多因素回歸分析顯示,調(diào)整其他因素影響后,研究對(duì)象的健康狀態(tài)不同所產(chǎn)生的異質(zhì)性仍然有顯著統(tǒng)計(jì)學(xué)意義(β校正=-0.504,P=0.005)。調(diào)整其他因素后,年齡和對(duì)比方式的異質(zhì)性也較明顯,接近于顯著的統(tǒng)計(jì)學(xué)意義(β校正=0.038,P=0.051;β校正=0.945,P=0.065)。調(diào)整健康狀態(tài)等所有研究特征的影響后,研究間的異質(zhì)性仍屬中等程度(I2=58.34%,表2)。

      圖4 本研究不同研究特征對(duì)研究間異質(zhì)性影響的單因素Meta回歸分析示意圖

      表2 本研究多因素Meta回歸分析結(jié)果一覽表

      Table 2 Results of Multivariate Meta-Regression Analysis

      研究特征回歸系數(shù)(β)回歸系數(shù)95%可信區(qū)間(95CI)t值P值健康狀態(tài)-0.504-0.840,-0.168-3.090.005樣本含量(例數(shù))0.0012-0.004, 0.0060.490.625對(duì)比方式0.945-0.063, 1.9541.930.065干預(yù)期限(月)-0.061-0.168, 0.047-1.160.257研究質(zhì)量0.024-0.489, 0.5360.100.924平均年齡(歲)0.038-0.004, 0.0612.050.051

      注:tau2=0.189,I-squared_reg=58.34%,Adj R-squared=17.76%

      2.3.3 基于不同研究特征的亞組分析

      按照可能引起異質(zhì)性的研究特征進(jìn)行亞組分析(表3)。由表3可知,在對(duì)比方式和年齡的亞組分析中,無論有氧運(yùn)動(dòng)與無運(yùn)動(dòng)干預(yù)比較,還是在基礎(chǔ)治療(常規(guī)處理)基礎(chǔ)上的有氧運(yùn)動(dòng)與單獨(dú)基礎(chǔ)治療(常規(guī)處理)比較;或者對(duì)中青年成人(≤45歲),還是中老年人群(>45歲),有氧運(yùn)動(dòng)均表現(xiàn)為顯著降低血漿中IL-6濃度。而在不同健康狀態(tài)人群的亞組分析中,有氧運(yùn)動(dòng)對(duì)健康人群未表現(xiàn)顯著降低血漿中IL-6濃度(SMD=-0.189,95%CI:-0.412~0.035,P=0.098),但對(duì)肥胖或其他慢性病患者表現(xiàn)為顯著降低(SMD=-0.593,95%CI:-1.137~-0.05,P=0.032;SMD=-0.717,95%CI:-1.324~-0.123,P=0.021)。

      表3 本研究根據(jù)可能異質(zhì)性來源的亞組分析一覽表

      Table 3 Subgroup Analysis Based on Potential Source of Heterogeneity

      研究特征納入實(shí)驗(yàn)數(shù)(樣本例數(shù))SMDSMD95%CIPI2P異質(zhì)性健康狀態(tài)健康成人16(2030)-0.189-0.412, 0.0350.09879.8<0.001慢性病患者14(670)-0.717-1.324,-0.1230.02192.3<0.001肥胖2(68)-0.593-1.137,-0.050.03215.40.277對(duì)比方式AEvsnoEX18(1972)-0.353-0.610,-0.0960.00784.8<0.001AE+RTvsRT14(796)-0.551-1.092,-0.0090.04691.2<0.001平均年齡(歲)≤458(489)-0.485-0.965,-0.0050.04890.6<0.001>4524(2279)-0.367-0.622,-0.1110.00583.5<0.001

      注:SMD:標(biāo)準(zhǔn)化均數(shù)差;95%CI:95%可信區(qū)間;AE vs no EX:有氧運(yùn)動(dòng)和無運(yùn)動(dòng)干預(yù)比較;AE+RT vs RT:基礎(chǔ)治療(常規(guī)處理)+有氧運(yùn)動(dòng)干預(yù)與單獨(dú)基礎(chǔ)治療(常規(guī)處理)比較。

      2.4 發(fā)表偏倚

      由Begg′s圖可以看出,小樣本的研究呈現(xiàn)明顯不對(duì)稱,陰性結(jié)果的小樣本研究未能獲得充分發(fā)表(圖5)。檢驗(yàn)結(jié)果也提示,發(fā)表偏倚較為明顯,具有顯著的統(tǒng)計(jì)學(xué)意義(t=-2.96,P=0.006)。

      圖5 本研究發(fā)表偏倚Begg’s檢驗(yàn)漏斗圖

      3 討論

      綜上所述,當(dāng)前Meta分析結(jié)果顯示,規(guī)律性有氧運(yùn)動(dòng)可能降低成年人機(jī)體內(nèi)IL-6濃度,尤其對(duì)有慢性炎癥的患者效果更為顯著。但由于納入研究間異質(zhì)性比較明顯以及發(fā)表偏倚的影響,本研究結(jié)論尚需要開展更多高質(zhì)量研究進(jìn)行驗(yàn)證。

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      A Meta-analysis of Regular Aerobatic Exercise on Plasma IL-6 Level in Adults

      ZHU Guang-hui1,LI Chang-qing2,LI Xin3

      Objective:To evaluate the effect of aerobatic exercise for plasma IL-6 levels in adults.Methods:The randomized controlled trials (RCTs) of aerobatic exercise for plasma IL-6 level in adults were identified from PubMed,Embase,Web of Science,Wanfang Data,CNKI and VIP Data (from inception to December,2014).The methodological quality of included RCTs was assessed by the Cochrane collaboration’s tool for assessing risk of bias.The Meta analysis was performed by using STATA 13.0 software.Results:Among 32 included RCTs involving 2 768 adults (of them,including 670 patients with chronic inflammatory diseases),10 RCTs were graded as high methodological quality,12 graded as moderate degree,and other 10 as low degree of methodological quality.The pooled result showed that aerobatic exercises were benefit to decrease plasma IL-6 levels in adults,and the SMD=-0.42 (95%CI:-0.62~-0.18,P=0.001),but the heterogenicity was substantive with I2=88.1%.The heterogenicity was decreased to 58.34% by adjusted for the possible bias factors such as the participants’ health status,the average of age,the type of comparison between groups,the duration of aerobatic exercise and quality of study by using Meta regression.The sub-group analysis suggested that effect of aerobatic exercise decreasing plasma IL-6 levels was more effective in patients with chronic inflammatory diseases or the obese individuals than the healthy adults,and SWD (95%CI) was -0.717( -1.324~-0.123,P=0.021),-0.593(-1.137~-0.05,P=0.032) and -0.189(-0.412~0.035,P=0.098),respectively.Conclusion:Current evidence shows that regular aerobatic exercises are effective to decrease plasma IL-6 levels in adults,especially in patients with chronic inflammatory diseases.However,more high-quality studies are required to verify the conclusion of this study due to the obvious heterogenicity and publication bias.

      regularaerobaticexercise;adults;plasmaIL-6Levels;meta-analysis

      2015-05-13;

      2015-08-10

      朱光輝(1980-),男,山東煙臺(tái)人,講師,碩士,主要研究方向?yàn)檫\(yùn)動(dòng)訓(xùn)練學(xué)、體育社會(huì)學(xué),Tel:(0510)85910882,E-mail:gibson_brilliant@hotmail.com;李常青(1986-),女,黑龍江七臺(tái)河人,在讀博士研究生,主要研究方向?yàn)檫\(yùn)動(dòng)生理學(xué), E-mail:lichangqing3278@163.com;李欣(1980-),男,四川綿陽人,副教授,博士,主要研究方向?yàn)檫\(yùn)動(dòng)生物化學(xué),E-mail:xinfat@sina.com。

      1.江南大學(xué) 體育學(xué)院,江蘇 無錫 214122;2.北京體育大學(xué) 研究生院,北京 100084;3.成都大學(xué) 體育學(xué)院,四川 成都 610106 1.Jiangnan University,Wuxi 214122,China;2.Beijing Sport University,Beijing 100084,China;3.Chengdu University,Chengdu 610106,China.

      1000-677X(2015)10-0090-08

      10.16469/j.css.201510012

      G804.5

      A

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