李海員?陳秋蕾?羅苑霞?宋漢聰?雷蕾?鄧玉嬌?肖露?曾小敏
【摘要】目的 觀察健腦操訓(xùn)練對(duì)輕度認(rèn)知功能障礙(MCI)患者認(rèn)知功能及精神行為癥狀的影響。方法 將80例MCI患者隨機(jī)分為干預(yù)組和對(duì)照組各40例,對(duì)干預(yù)組進(jìn)行每周2次、每次45~60 min的健腦操訓(xùn)練,持續(xù)訓(xùn)練12周;分別于基線、3個(gè)月、6個(gè)月時(shí)對(duì)2組進(jìn)行簡(jiǎn)易精神狀態(tài)檢查量表(MMSE)、蒙特利爾認(rèn)知評(píng)估量表(MOCA)、Zung焦慮自評(píng)量表(SAS)、Zung抑郁自評(píng)量表(SDS)、神經(jīng)精神量表(NPI)、匹茲堡睡眠質(zhì)量指數(shù)(PSQI)的評(píng)估。結(jié)果 隨訪3個(gè)月和6個(gè)月時(shí),對(duì)照組MMSE總分均較基線下降(P < 0.001、P = 0.007),注意力與計(jì)算力亞項(xiàng)分值也下降(P < 0.001、P = 0.009),語(yǔ)言能力亞項(xiàng)分值于隨訪6個(gè)月時(shí)也下降(P = 0.012);干預(yù)組MMSE總分及其亞項(xiàng)分值各時(shí)間點(diǎn)比較差異均無(wú)統(tǒng)計(jì)學(xué)意義(P均> 0.05)。對(duì)照組隨訪3個(gè)月和6個(gè)月時(shí)的MOCA總分均較基線下降(P =
0.011、P < 0.001),注意力與計(jì)算力亞項(xiàng)得分明顯下降(P = 0.002、P = 0.048);干預(yù)組隨訪6個(gè)月時(shí)MOCA總分較基線增加(P = 0.001),隨訪3個(gè)月和6個(gè)月時(shí)注意力與計(jì)算力亞項(xiàng)得分均較基線增加(P均< 0.001),且此時(shí)2組注意力與計(jì)算力亞項(xiàng)得分比較差異均具有統(tǒng)計(jì)學(xué)意義(P均< 0.001)。隨訪3個(gè)月和6個(gè)月時(shí),對(duì)照組SAS分值均較基線增加(P = 0.001、P = 0.003),SDS分值也均較基線增加(P = 0.002、P = 0.007);而干預(yù)組于隨訪6個(gè)月時(shí)SDS分值較基線下降(P = 0.009)。隨訪6個(gè)月時(shí)2組的SAS和SDS分值比較差異均具有統(tǒng)計(jì)學(xué)意義(P = 0.002、P = 0.016)。干預(yù)組和對(duì)照組NPI、PSQI分值無(wú)明顯變化。結(jié)論 健腦操訓(xùn)練可在一定程度上改善MCI患者認(rèn)知功能、穩(wěn)定情緒,在預(yù)防或延緩MCI患者向癡呆轉(zhuǎn)化方面可能具有積極作用。
【關(guān)鍵詞】輕度認(rèn)知功能障礙;健腦操;認(rèn)知功能;精神行為癥狀
Effect of brain exercise training on cognitive function and behavioral and psychological symptoms of patients with mild cognitive impairment Li Haiyuan, Chen Qiulei, Luo Yuanxia, Song Hancong, Lei Lei, Deng Yujiao, Xiao Lu, Zeng Xiaomin. Guangzhou Geriatric Hospital, Guangzhou 510030, China
Corresponding author,Li Haiyuan,E-mail: 46053841@qq.com
【Abstract】Objective To observe the effect of brain exercise training on cognitive function and behavioral and psychological symptoms of patients with mild cognitive impairment (MCI). Methods 80 patients with MCI were randomly divided into the intervention (n = 40) and control groups (n = 40). In the intervention group, brain exercise training was delivered for 45-60 min twice a week for 12 consecutive weeks. Mini-Mental State Examination Scale (MMSE), Montreal Cognitive Assessment (MoCA), Zungs Self-rating Anxiety Scale (SAS), Zungs Self-rating Depression Scale (SDS), Neuropsychiatric Inventory (NPI) and Pittsburgh Sleep Quality Index (PSQI) between two groups were evaluated at the baseline, 3 months and 6 months, respectively. Results In the control group, the total MMSE scores at 3 and 6 months were significantly declined compared with the baseline value (P < 0.001, P = 0.007), the scores of attention and calculation domains were significantly decreased (P < 0.001, P = 0.009), and the score of language domain was also significantly declined at 6-month follow-up (P = 0.012). No significant differences were observed regarding the total and each domain scores of MMSE at different time points in the intervention group (all P > 0.05). In the control group, the total MoCA scores at 3- and 6-month follow-up were significantly lower than the baseline value (P = 0.011, P < 0.001), and the scores of attention and calculation domains were considerably declined (P = 0.002, P = 0.048). In the intervention group, the total MoCA score at 6 months was significantly higher than the baseline value (P = 0.001), and the scores of attention and calculation domains at 3- and 6-month follow-up were considerably higher compared with the baseline values (both P < 0.001), which significantly differed between two groups (both P < 0.001). In the control group, the SAS scores at 3- and 6-month follow-up were significantly higher than the baseline values (P = 0.001, P = 0.003), the SDS scores at 3- and 6-month follow-up were also significantly higher compared with the baseline values (P = 0.002, P = 0.007). In the intervention group, the SDS score at 6 months was significantly lower than the baseline score (P = 0.009). The SAS and SDS scores at 6-month follow-up significantly differed between two groups (P = 0.002, P = 0.016). No significant changes were observed in the NPI and PSQI scores between two groups. Conclusion Brain exercise training can improve the cognitive function and stabilize the mood of MCI patients to a certain extent, which might play a positive role in preventing or delaying the progression of MCI into dementia.
【Key words】Mild cognitive impairment; Brain exercise; Cognitive function; Behavioral and psychological symptom
輕度認(rèn)知功能障礙 (MCI )是介于癡呆和正常老化之間的一種認(rèn)知缺損狀態(tài),臨床表現(xiàn)為輕度記憶力或認(rèn)知功能障礙,但未達(dá)到癡呆的診斷。國(guó)內(nèi)外研究表明 MCI 患者不僅存在認(rèn)知功能受損,同時(shí)合并有各種精神行為癥狀,尤其以抑郁、焦慮等情感異常多見(jiàn)[1]。目前尚無(wú)藥物獲得FDA 批準(zhǔn)用于治療MCI患者,因此非藥物治療已成為 MCI 早期干預(yù)的主要手段。國(guó)外研究表明運(yùn)動(dòng)能改善MCI患者的認(rèn)知功能[2]。2017年底,美國(guó)神經(jīng)病學(xué)學(xué)會(huì)(AAN)更新了MCI的實(shí)踐指南,首次明確提出將每周2次的定期運(yùn)動(dòng)鍛煉作為MCI患者整體治療的一部分(B級(jí)推薦)[3]。
健腦操是由美國(guó)保羅丹尼遜博士于1969年創(chuàng)立的,共26式。健腦操的科學(xué)原理是通過(guò)一系列身體動(dòng)作系統(tǒng)地刺激大腦不同部分之間的聯(lián)系及整合,促使大腦更加發(fā)達(dá),從而提升大腦的運(yùn)作水平。1998年,中國(guó)香港注冊(cè)健腦操導(dǎo)師及顧問(wèn)蔡慧明、何兆燦將健腦操引入國(guó)內(nèi),經(jīng)過(guò)多年的實(shí)踐發(fā)現(xiàn)健腦操在改善認(rèn)知功能、增強(qiáng)專注力及記憶能力、強(qiáng)化日常工作的組織能力、建立積極情緒等方面具有重要意義。
目前國(guó)內(nèi)尚無(wú)健腦操對(duì)MCI患者的認(rèn)知功能及精神行為癥狀影響的研究,本研究首次探討該問(wèn)題,為輕度認(rèn)知功能障礙患者的早期運(yùn)動(dòng)模式干預(yù)提供依據(jù)。
對(duì)象與方法
一、研究對(duì)象
根據(jù)預(yù)實(shí)驗(yàn)結(jié)果將2019年10月至2021年7月廣州市老年醫(yī)院的80例MCI患者設(shè)為研究對(duì)象,將其隨機(jī)分為干預(yù)組與對(duì)照組各40例。入組標(biāo)準(zhǔn):采用Petersen等2001年修訂的MCI臨床診斷標(biāo)準(zhǔn),①主訴為記憶力障礙。②具有客觀記憶受損依據(jù)。③總體認(rèn)知功能正常。④日常生活能力保持完好。⑤尚不能診斷癡呆。年齡≥60歲,簡(jiǎn)易精神狀態(tài)檢查量表(MMSE)≥26分,癡呆臨床評(píng)定量表(CDR)評(píng)分=0.5分[4-5]。排除標(biāo)準(zhǔn):①有長(zhǎng)期酗酒、長(zhǎng)期服用精神病藥物、嚴(yán)重的頭部外傷史、抑郁癥、精神分裂癥、甲狀腺疾病、貧血、維生素B12及葉酸缺乏、腦血管病、嚴(yán)重視力、聽(tīng)力障礙等。②伴有嚴(yán)重軀體疾病導(dǎo)致不能配合健腦操訓(xùn)練者。本研究通過(guò)廣州市老年醫(yī)院醫(yī)學(xué)倫理委員會(huì)審批,所有患者同意參加。
二、方 法
1. 成立評(píng)估小組及干預(yù)小組
由醫(yī)師、認(rèn)知康復(fù)員、護(hù)士、社工組成評(píng)估小組,所有評(píng)估人員均經(jīng)過(guò)嚴(yán)格培訓(xùn),熟悉掌握評(píng)估量表的操作,評(píng)估小組負(fù)責(zé)對(duì)研究對(duì)象進(jìn)行基線評(píng)估及隨訪評(píng)估;干預(yù)小組成員主要為社工,負(fù)責(zé)對(duì)干預(yù)對(duì)象進(jìn)行健腦操干預(yù)訓(xùn)練。
2 制定干預(yù)措施
健腦操動(dòng)作共26式,其中部分動(dòng)作對(duì)于老年人來(lái)說(shuō)操作難度大,在充分考慮老年人軀體功能、安全性、可操作性等因素的情況下篩選出其中8式動(dòng)作作為本次研究的干預(yù)措施。
3. 資料收集及基線評(píng)估
資料收集包括一般情況、臨床病史采集等。分別對(duì)干預(yù)組和對(duì)照組進(jìn)行基線評(píng)估,評(píng)估量表包括:①M(fèi)MSE,使用張明園修訂的中文版,總分為0~30分,文盲組< 17分、小學(xué)組< 20分、中學(xué)或以上組< 24分為認(rèn)知功能受損。②蒙特利爾認(rèn)知評(píng)估量表(MOCA),由Nasreddine等[6]開(kāi)發(fā),本研究采用北京版MOCA,< 26分為認(rèn)知功能受損,受教育年限≤12年者總分加1分。③Zung焦慮自評(píng)量表(SAS),用于評(píng)定焦慮癥狀,< 50分者正常,50~60分為輕度焦慮,61~70分為中度焦慮,> 70分為重度焦慮[7]。④Zung抑郁自評(píng)量表(SDS),用于評(píng)定抑郁癥狀,< 50分為正常,50~60分為輕度抑郁,61~70分為中度抑郁,> 70分為重度抑郁[8]。⑤神經(jīng)精神量表(NPI),用于評(píng)定精神行為癥狀,總分為0~144分,得分越高提示患者精神行為癥狀越嚴(yán)重[9]。⑥匹茲堡睡眠質(zhì)量指數(shù)(PSQI),用于評(píng)定最近1個(gè)月的睡眠情況,總分為0~21分,< 7分為睡眠質(zhì)量正常,≥7分為低睡眠質(zhì)量,得分越高表明睡眠質(zhì)量越差[10]。
4. 實(shí)施干預(yù)計(jì)劃
干預(yù)組進(jìn)行每周2次、每次45~60 min的健腦操干預(yù)訓(xùn)練,持續(xù)訓(xùn)練12周。
5. 隨訪評(píng)估
分別于干預(yù)3個(gè)月、6個(gè)月后對(duì)干預(yù)組和對(duì)照組進(jìn)行隨訪,完成MMSE、MOCA、SAS、SDS、NPI、PSQI等量表評(píng)估工作。
三、統(tǒng)計(jì)學(xué)處理
本研究采用SPSS 23.0軟件進(jìn)行數(shù)據(jù)處理。符合正態(tài)分布的計(jì)量資料以? 表示,組間比較采用t檢驗(yàn),非正態(tài)分布的計(jì)量資料以M(P25,P75)表示,組間比較采用秩和檢驗(yàn),計(jì)數(shù)資料以例表示,組間比較采用χ2檢驗(yàn)。2組不同時(shí)間點(diǎn)多次測(cè)量的縱向資料采用廣義估計(jì)方程模型進(jìn)行分析。
P < 0.05為差異有統(tǒng)計(jì)學(xué)意義。
結(jié)果
一、一般資料和基線評(píng)估的比較
本次研究過(guò)程中干預(yù)組有4例患者因個(gè)人原因退出研究,最終共有76例患者完成隨訪觀察,分別為對(duì)照組40例、干預(yù)組36例,失訪率5.3%。2組患者年齡、性別、文化程度、基線評(píng)估量表得分的比較差異均無(wú)統(tǒng)計(jì)學(xué)意義(P < 0.05)。見(jiàn)表1。
二、干預(yù)組與對(duì)照組MCI患者認(rèn)知功能評(píng)分的比較
1. MMSE
隨訪3個(gè)月和6個(gè)月時(shí),對(duì)照組MMSE總分均較基線下降(P < 0.001、P = 0.007),注意力與計(jì)算力亞項(xiàng)分值也下降(P < 0.001、P = 0.009),語(yǔ)言能力亞項(xiàng)分值于隨訪6個(gè)月時(shí)也下降(P = 0.012);干預(yù)組MMSE總分及其亞項(xiàng)分值各時(shí)間點(diǎn)比較差異均無(wú)統(tǒng)計(jì)學(xué)意義(P均> 0.05)。見(jiàn)表2。
2. MOCA
對(duì)照組隨訪3個(gè)月和6個(gè)月時(shí)的MOCA總分均較基線下降(P = 0.011、P < 0.001),注意力與計(jì)算力亞項(xiàng)得分明顯下降(P = 0.002、P = 0.048);干預(yù)組隨訪6個(gè)月時(shí)MOCA總分較基線增加(P = 0.001),隨訪3個(gè)月和6個(gè)月時(shí)注意力與計(jì)算力亞項(xiàng)得分均較基線增加(P均< 0.001),且此時(shí)2組注意力與計(jì)算力亞項(xiàng)得分的比較差異均具有統(tǒng)計(jì)學(xué)意義(P均< 0.001)。見(jiàn)表3。
3. 精神行為癥狀及睡眠質(zhì)量評(píng)分
干預(yù)前MCI患者中5.3%伴焦慮癥狀,19.7%伴抑郁癥狀,39.5%的睡眠質(zhì)量異常。隨訪3個(gè)月和6個(gè)月時(shí),對(duì)照組SAS分值均較基線增加(P = 0.001、P = 0.003),SDS分值也均較基線增加(P =
0.002、P = 0.007);而干預(yù)組于隨訪6個(gè)月時(shí)SDS分值較基線下降(P = 0.009)。隨訪6個(gè)月時(shí)2組的SAS和SDS分值比較差異有統(tǒng)計(jì)學(xué)意義(P = 0.002、P = 0.016)。2組NPI、PSQI分值無(wú)明顯變化,但85%患者主觀感受睡眠質(zhì)量較前好轉(zhuǎn)。見(jiàn)表4。
對(duì)不伴有焦慮抑郁的MCI患者的SAS、SDS分值進(jìn)行分析,結(jié)果顯示,隨訪3個(gè)月和6個(gè)月時(shí),對(duì)照組SAS分值均較基線增加(P = 0.001、P =
0.003),SDS分值也均較基線增加(P < 0.001、P =
0.001),而干預(yù)組于隨訪6個(gè)月時(shí)SDS分值較基線下降(P = 0.015)。隨訪3個(gè)月和6個(gè)月時(shí),2組SAS分值的比較(P = 0.028、P = 0.001)和SDS分值的比較差異均具有統(tǒng)計(jì)學(xué)意義(分別為P = 0.030、P < 0.001)。見(jiàn)表5。
討論
MCI是臨床可識(shí)別的癡呆前狀態(tài),MCI患者的癡呆年轉(zhuǎn)化率為10%~15%[11]。對(duì)MCI的預(yù)防和早期干預(yù)在降低癡呆轉(zhuǎn)化率、延緩癡呆的發(fā)生等方面具有重要意義。研究表明運(yùn)動(dòng)干預(yù)可維持認(rèn)知功能的穩(wěn)定性和延緩癡呆的進(jìn)程[12-13]。
本研究顯示對(duì)照組MMSE總分呈下降趨勢(shì),其注意力與計(jì)算力、語(yǔ)言等亞項(xiàng)得分在隨訪3個(gè)月和(或)6個(gè)月時(shí)下降且差異具有統(tǒng)計(jì)學(xué)意義,干預(yù)組則無(wú)明顯變化,提示健腦操干預(yù)訓(xùn)練可改善MCI患者注意力與計(jì)算力認(rèn)知域功能,這與以往有關(guān)運(yùn)動(dòng)訓(xùn)練可改善注意力的研究結(jié)果相一致[14-15]。
本研究顯示雖然健腦操不能明顯改善MCI患者M(jìn)MSE和MOCA總分,但能改善MOCA注意力與計(jì)算力亞項(xiàng)評(píng)分,提示與MMSE相比,MOCA對(duì)MCI患者的隨訪評(píng)估可能更為敏感,與以往研究結(jié)果相一致[16]。
研究表明,焦慮和抑郁癥狀是MCI向癡呆轉(zhuǎn)化的重要危險(xiǎn)因素[17-18]。運(yùn)動(dòng)干預(yù)可改善MCI患者的焦慮和抑郁癥狀[19]。本研究顯示,對(duì)照組在隨訪3個(gè)月和6個(gè)月時(shí)SAS和SDS分值均較基線增加,而干預(yù)組SAS無(wú)明顯變化,SDS得分在隨訪6個(gè)月時(shí)較基線下降(P = 0.009),且此時(shí)2組SAS、SDS分值的比較差異均具有統(tǒng)計(jì)學(xué)意義,提示健腦操干預(yù)訓(xùn)練對(duì)MCI患者具有穩(wěn)定情緒的作用,與以往研究結(jié)果一致[19]。對(duì)照組不伴焦慮和抑郁癥狀的MCI患者的SAS、SDS分值增加,而干預(yù)組SAS分值維持相對(duì)平穩(wěn),SDS得分在隨訪6個(gè)月時(shí)較基線下降,且2組于隨訪3個(gè)月和6個(gè)月時(shí)的比較差異均具有統(tǒng)計(jì)學(xué)意義,提示健腦操訓(xùn)練在一定程度上可預(yù)防或延遲MCI患者焦慮和抑郁癥狀的出現(xiàn)。2組間NPI分值差異無(wú)統(tǒng)計(jì)學(xué)意義,考慮可能與伴有精神行為癥狀的MCI患者樣本量偏少有關(guān),但結(jié)合本研究對(duì)象SAS、SDS分值的改變,本研究組認(rèn)為本結(jié)果與以往有關(guān)運(yùn)動(dòng)干預(yù)可緩解MCI患者精神行為癥狀的研究結(jié)果相一致[19-20]。本研究干預(yù)前MCI患者睡眠質(zhì)量異常占39.5%,干預(yù)后2組PSQI分值無(wú)明顯變化,但在隨訪的過(guò)程中大部分干預(yù)對(duì)象主觀感受睡眠質(zhì)量較前好轉(zhuǎn),可能適當(dāng)延長(zhǎng)干預(yù)時(shí)間或者增加每周干預(yù)的頻次會(huì)呈現(xiàn)不同的干預(yù)效果,仍需進(jìn)一步探討。
綜上所述,健腦操訓(xùn)練可在一定程度上改善MCI患者認(rèn)知功能、穩(wěn)定情緒,在預(yù)防或延緩MCI患者向癡呆轉(zhuǎn)化方面可能具有積極作用。同時(shí),因健腦操具備低成本性及可及性的特點(diǎn),在社區(qū)MCI患者中具有普適意義。
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(收稿日期:2022-08-22)
(本文編輯:洪悅民)