摘 要:基于雙過程理論剖析不同階段鍛煉行為的影響因素,發(fā)現(xiàn)雙過程理論的情感過程和理性過程分別在鍛煉的不同階段對(duì)鍛煉行為促進(jìn)有著各自的優(yōu)勢(shì)與不足。在鍛煉啟動(dòng)階段,情感過程的啟動(dòng)速度快,無需認(rèn)知資源,但啟動(dòng)效果不穩(wěn)定,要注意消極情緒對(duì)啟動(dòng)效果的干擾,而理性過程對(duì)鍛煉的啟動(dòng)速度慢,需要認(rèn)知資源,但可以管理行為目標(biāo)、調(diào)控鍛煉行為,進(jìn)而彌補(bǔ)消極情緒干擾與啟動(dòng)效果不穩(wěn)定的不足。在鍛煉維持階段,情感過程主要以內(nèi)隱態(tài)度的形式快速且內(nèi)隱地影響鍛煉行為,但影響效果不穩(wěn)定,所以在該階段理性過程更為重要,同時(shí)其也會(huì)占用認(rèn)知資源,帶來執(zhí)行壓力,而情感過程與理性過程只有相互作用、雙管齊下才能促進(jìn)鍛煉行為,最終形成鍛煉習(xí)慣。研究認(rèn)為,未來研究方向包括拓寬雙過程理論在鍛煉促進(jìn)領(lǐng)域的研究對(duì)象,探索雙過程理論對(duì)鍛煉促進(jìn)的特色干預(yù)方法,深化雙過程理論與其他理論模型的整合。
關(guān) 鍵 詞:運(yùn)動(dòng)心理學(xué);鍛煉行為促進(jìn);鍛煉習(xí)慣;雙過程理論
中圖分類號(hào):G80-05 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1006-7116(2024)06-0064-07
Work both ways: Reflection of exercise behavior promotion on dual-process theory
LIU Meiting1, 2,ZHANG Liancheng1
(1.Key Laboratory of Competitive Sport Psychological and Physiological Regulation,General Administration of Sport,Tianjin University of Sport,Tianjin 301617,China;2.Mental Health Center,Tianjin Maritime College,Tianjin 300350,China)
Abstract: The influencing factors in different stages of exercise behaviors are analyzed based on dual-process theory, and the study finds that either the affective process or reflective process of the dual process theory has advantages and disadvantages to promote exercise in different stages of exercise. During the stage of initiation of exercise, the affective process works quickly without any cognitive resources, but the effect of initiation is unstable, and it is necessary to pay attention to the interference of negative emotions. Compared to the affective process, the reflective process works slowly with cognitive resources, but it can prevent the unstable initiation and the interference of negative emotions through managing the goals of behavior and regulating exercise behavior. During the stage of exercise maintenance, affective process affects the exercise behavior in form of implicit attitude quickly and implicitly, regarding of the effect is unstable. Although the reflective process plays a very vital role in the maintenance of exercise, it also needs a lot of cognitive resources and also occurs pressure, and only under the affective process and reflective process working together can exercise habits be promoted. The study holds that in the future research, expanding the research field of the dual-process theory in exercise promotion, exploring unique interventions of the dual-process theory on exercise promotion, and deepening the integration of the dual-process theory with other theoretical models will be necessary.
Keywords: sports psychology;exercise behavior promotion;exercise habit;dual-process theory
在世界衛(wèi)生組織總結(jié)的全球死亡風(fēng)險(xiǎn)因素中,缺乏運(yùn)動(dòng)高居第四位[1]。雖然大眾廣泛認(rèn)同鍛煉益于身心健康,但全球仍有27.5%的成人和81.0%的青少年沒有達(dá)到運(yùn)動(dòng)指南標(biāo)準(zhǔn)[2],因此健康促進(jìn)領(lǐng)域越來越關(guān)注如何讓不鍛煉的人進(jìn)行鍛煉。在鍛煉心理學(xué)領(lǐng)域,學(xué)者們?cè)诤荛L(zhǎng)一段時(shí)間里從理性角度來推動(dòng)人們參與鍛煉,形成計(jì)劃行為理論、合理行動(dòng)理論、社會(huì)認(rèn)知理論等諸多理論,這些理論將理性判斷(reasoned judgement)作為影響鍛煉行為的心理結(jié)構(gòu)[3],將鍛煉意向作為鍛煉行為的“近端”因素[4]予以計(jì)劃并執(zhí)行。但有元分析指出,鍛煉意向與行為之間的差距為47.6%,成功地將積極鍛煉意向轉(zhuǎn)為行為幾乎是偶然的[5],這意味著大眾對(duì)于鍛煉“知而不行”。隨著雙過程理論(dual-process theory,DPT)在該領(lǐng)域中的應(yīng)用與發(fā)展,越來越多的學(xué)者重視情感在鍛煉行為中的作用[6],強(qiáng)調(diào)瞬時(shí)情感對(duì)鍛煉行為的直接促進(jìn)或阻礙影響[7],在一定程度上打破“知而不行”的鍛煉現(xiàn)象。然而,啟動(dòng)鍛煉行為并不意味著鍛煉行為已維持住,持續(xù)有研究證明啟動(dòng)身體活動(dòng)后存在很高的脫落率[8-9],可見啟動(dòng)鍛煉后“行而不輟”的目標(biāo)仍然難以實(shí)現(xiàn)。為此,有學(xué)者進(jìn)一步將DPT與行為控制理論相結(jié)合,強(qiáng)調(diào)調(diào)節(jié)過程在鍛煉行為啟動(dòng)、維持全過程中的作用,進(jìn)而促進(jìn)鍛煉意向向鍛煉行為的轉(zhuǎn)變[10]。
由于鍛煉行為是復(fù)雜的,需要一系列從準(zhǔn)備到啟動(dòng)、再到參與的行為過程[11],同時(shí)不同鍛煉階段所需要的促進(jìn)手段也不同,不同理論對(duì)鍛煉行為階段劃分也提出不同觀點(diǎn)。轉(zhuǎn)換理論模型(transtheoretical model,TTM)認(rèn)為行為改變就是一系列連續(xù)階段,在鍛煉行為早期階段可以使用認(rèn)知策略,在鍛煉行為的后期階段則使用行為策略[12],匹配一個(gè)鍛煉階段的干預(yù)方案是無法匹配于另一個(gè)不同的階段[13]。自我決定理論(self-determination theory,SDT)認(rèn)為個(gè)體只有不斷內(nèi)化和整合活動(dòng)動(dòng)機(jī),啟動(dòng)的行為才能向自動(dòng)化行為改變[14]。健康行動(dòng)過程(health action process approach,HAPA)將健康行為改變視為連續(xù)且可以劃分階段的過程,認(rèn)為健康行為改變的每個(gè)階段需要不同自我效能[15]。Rhodes等[10]認(rèn)為身體活動(dòng)的啟動(dòng)或維持應(yīng)該被視為一個(gè)過程而非階段。近年來,以DPT為基礎(chǔ)的理論模型更傾向認(rèn)為,隨著鍛煉時(shí)間的推進(jìn)鍛煉維持所需的自我調(diào)控和執(zhí)行功能終將不斷下降[16-17],鍛煉習(xí)慣將作為自動(dòng)化過程影響鍛煉行為的長(zhǎng)期維持。為了更清晰地闡述DPT相關(guān)理論模型對(duì)鍛煉行為各階段、全過程的影響,本研究將認(rèn)知過程、反思過程、自我調(diào)節(jié)等理性導(dǎo)向?yàn)榛A(chǔ)的過程統(tǒng)稱為理性過程,將情緒情感、知覺等自動(dòng)化的過程統(tǒng)稱為情感過程,結(jié)合鍛煉的不同階段剖析DPT對(duì)鍛煉行為的影響因素,闡述其優(yōu)勢(shì)與不足,以期“雙管齊下”探尋鍛煉促進(jìn)的適恰方法,為干預(yù)研究提供思路。
1 DPT的基本觀點(diǎn)
鍛煉行為既是理性的又是非理性的。過去很長(zhǎng)一段時(shí)間,人們都認(rèn)為參加鍛煉的人都是那些認(rèn)為鍛煉有益的人,但生活中有些人是在享樂動(dòng)機(jī)驅(qū)動(dòng)下參與鍛煉的,這些人往往因?yàn)殄憻捘茏屪约嚎鞓凡佩憻挕R虼耍岳硇耘袛酁榛A(chǔ)的理論模型無法解釋第二類人群的鍛煉行為。為了不斷提高理論對(duì)鍛煉行為的解釋,一些學(xué)者逐漸探究情感對(duì)鍛煉行為的影響。
20世紀(jì)60年代末至70年初,“鍛煉能夠帶給人怎樣的感受”成為鍛煉心理學(xué)領(lǐng)域中的重要問題,在隨后的50多年里學(xué)者們開始持續(xù)探究鍛煉與情感之間的關(guān)系并形成一個(gè)兩極觀點(diǎn),即“鍛煉能夠令人感覺更好”和“鍛煉使人產(chǎn)生消極體驗(yàn)”。20世紀(jì)初隨著DPT在該領(lǐng)域中的不斷應(yīng)用與發(fā)展,將情感反應(yīng)與個(gè)體對(duì)身體活動(dòng)代謝的適應(yīng)性相互聯(lián)系,承認(rèn)鍛煉能使人產(chǎn)生消極體驗(yàn),提出劑量-反應(yīng)模型并從神經(jīng)科學(xué)的視角提出情感反應(yīng)機(jī)制。DPT在鍛煉心理學(xué)領(lǐng)域提出鍛煉與情感關(guān)系研究的視角,指出鍛煉情感體驗(yàn)不僅是個(gè)體在鍛煉中的情感體驗(yàn),也是影響后續(xù)鍛煉行為決策的動(dòng)機(jī)[11]。DPT的“雙過程”分別指自動(dòng)化的、無需努力的、快速情感過程(過程一),及有意識(shí)的、深思熟慮的、緩慢的理性過程(過程二)。前者獨(dú)立于認(rèn)知能力,無需工作記憶,屬于內(nèi)隱的、情境化的過程,后者與認(rèn)知能力有關(guān),需要工作記憶,屬于外顯的、抽象化的過程[18]。以DPT為基礎(chǔ)的理論模型還包括鍛煉的情感-反思理論(affective-reflective theory,ART)[19]、運(yùn)動(dòng)的最小程度努力理論(theory of effort minimization in physical activity,TEMPA)[16]、身體活動(dòng)采納和維持模型(physical activity adoption and maintenance model,PAAM Model)[17]、情感和健康行為框架(affect and health behavior framework,AHBF)[20]、身體活動(dòng)的多過程行為控制(multi-process action control in physical activity,M-PAC)[21]等,這些理論模型都推動(dòng)鍛煉心理學(xué)進(jìn)入后認(rèn)知主義發(fā)展的新紀(jì)元[6]。
DPT不斷推動(dòng)鍛煉-情感關(guān)系研究的深入,情感-理性理論將鍛煉中的瞬時(shí)情感作為核心情感,認(rèn)為鍛煉中的瞬時(shí)情感使個(gè)體趨近或回避行為改變的場(chǎng)景[22]。運(yùn)動(dòng)的最小程度努力理論則認(rèn)為人類行為是一個(gè)能量的連續(xù)體,無論是久坐行為還是走路行為都需要消耗能量,個(gè)體對(duì)付出最小程度努力的活動(dòng)會(huì)產(chǎn)生自動(dòng)化情感,從而促使個(gè)體改變或維持行為。情感和健康行為框架介紹多維結(jié)構(gòu)的情感因素,強(qiáng)調(diào)情感是身體活動(dòng)促進(jìn)的決定因素。采納和維持模型將鍛煉目標(biāo)意向、自我調(diào)控特質(zhì)及執(zhí)行功能視為理性過程,將行為習(xí)慣作為自動(dòng)化情感過程,認(rèn)為自動(dòng)化情感過程雖然能夠快速啟動(dòng)行為改變,但繼續(xù)執(zhí)行行為則需要自我調(diào)控等外顯過程。雖然DPT十分強(qiáng)調(diào)鍛煉情感的作用,但并未忽略理性過程,二者在鍛煉行為的全過程各階段相互影響。
2 DPT對(duì)各階段鍛煉行為的闡釋
2.1 DPT雙管齊下打破“知而不行”:DPT對(duì)鍛煉行為啟動(dòng)的闡釋
鍛煉促進(jìn)的起點(diǎn)是人要發(fā)生行為變化,因此啟動(dòng)身體活動(dòng)成為首要任務(wù)[23]。階段改變模型(stages of change models)將鍛煉行為劃分階段,注重鍛煉目標(biāo)對(duì)后續(xù)行為的重要性[24]。健康行動(dòng)過程更是在階段模型基礎(chǔ)上,將健康行為劃分為動(dòng)機(jī)和意志階段,強(qiáng)調(diào)個(gè)體只有具備鍛煉動(dòng)機(jī)才能進(jìn)入意志階段,進(jìn)而啟動(dòng)意向行為。DPT認(rèn)為情感過程在不占用認(rèn)知資源的情況下可以快速啟動(dòng)鍛煉,理性過程也可以在個(gè)體體驗(yàn)消極情緒或遇到目標(biāo)沖突時(shí)管理目標(biāo)、調(diào)控行為,兩個(gè)過程缺一不可。
情感-理性理論將瞬時(shí)情感能夠快速啟動(dòng)鍛煉行為解釋為瞬時(shí)情感在前意識(shí)水平激活人的享樂反應(yīng),這一過程無需意識(shí)控制,也無需鍛煉意向。之所以把那一刻的情感稱為瞬時(shí)情感,就是因?yàn)槠鋵?duì)鍛煉行為啟動(dòng)的速度遠(yuǎn)遠(yuǎn)快于理性過程,ART也將瞬時(shí)情感界定為在行為發(fā)生變化時(shí)的核心情感,同時(shí)作為動(dòng)機(jī)直接促進(jìn)或抑制鍛煉行為[19]。在鍛煉啟動(dòng)階段,理性過程相較于自動(dòng)化的情感過程的作用速度慢,需要認(rèn)知參與,這意味著要通過理性過程啟動(dòng)一個(gè)人的鍛煉行為必須要求個(gè)體具備鍛煉意向,理解鍛煉對(duì)自己的意義,所謂行為的改變就是將目標(biāo)體現(xiàn)在行為中[15]。因此,在鍛煉行為促進(jìn)研究中,一些學(xué)者鼓勵(lì)個(gè)體在鍛煉中產(chǎn)生愉悅情緒[25],尤其是讓個(gè)體感受到鍛煉帶給自己的能量,發(fā)現(xiàn)個(gè)體在鍛煉中積極的情緒在一段時(shí)間里可以提高他們的身體活動(dòng)[26]。甚至有學(xué)者提出,要通過提高運(yùn)動(dòng)中的愉悅感來創(chuàng)新運(yùn)動(dòng)處方[27-28]。
然而,鍛煉本身給身體帶來一系列的刺激并非總是舒服的,難免在鍛煉過程中和鍛煉后產(chǎn)生消極情緒,這些消極情緒會(huì)使人回避鍛煉場(chǎng)景、抑制鍛煉行為。此外,情感過程對(duì)鍛煉行為啟動(dòng)的效果也并非總是穩(wěn)定的,個(gè)體可以在瞬時(shí)情感下啟動(dòng)鍛煉,也可以被其他行為的瞬時(shí)情感干擾。例如,久坐行為可引發(fā)強(qiáng)烈的情感反應(yīng)(如愉悅、舒適等),或與更高的獎(jiǎng)賞行為(如社交、飲食等)共同發(fā)生[19]。試想,一個(gè)人剛剛啟動(dòng)鍛煉不久就接到戀人打來的聚餐電話,那此時(shí)鍛煉行為很可能會(huì)被聚餐行為替代。那么,理性過程是否可以彌補(bǔ)情感過程在啟動(dòng)中的不足呢?
基于自動(dòng)化情感體驗(yàn)所帶來的負(fù)面效果,有學(xué)者提出“劑量-反應(yīng)”模式(a dose-response pattern),承認(rèn)鍛煉能引發(fā)消極情緒,指出高強(qiáng)度鍛煉會(huì)帶來壓力反應(yīng),引發(fā)神經(jīng)內(nèi)分泌反應(yīng)[29],極限強(qiáng)度的壓力也會(huì)在更大范圍降低生理穩(wěn)定性[30],而中等強(qiáng)度的鍛煉能提高人的愉悅感和能量感[27]。于是,一些鍛煉促進(jìn)研究讓被試者在鍛煉中自主調(diào)節(jié)可耐受的鍛煉強(qiáng)度,在提升愉悅感的同時(shí)增強(qiáng)鍛煉的依從性[6,28]。有研究通過指導(dǎo)被試者以“感到不錯(cuò)”的鍛煉強(qiáng)度進(jìn)行鍛煉,發(fā)現(xiàn)的確可以提高健康的心肺指標(biāo)[31];也有研究通過讓實(shí)驗(yàn)組被試者自我監(jiān)控鍛煉強(qiáng)度來提高鍛煉參與率[32]。此外,當(dāng)個(gè)體面臨多個(gè)目標(biāo)或目標(biāo)間存在沖突時(shí),理性過程可以對(duì)目標(biāo)進(jìn)行監(jiān)控和管理,優(yōu)化目標(biāo)進(jìn)而執(zhí)行鍛煉行為[33]。以上可見,理性過程彌補(bǔ)情感過程的兩大不足,管理行為目標(biāo)和調(diào)控鍛煉行為,進(jìn)而與情感過程相互作用,促進(jìn)鍛煉行為的啟動(dòng)。總之,DPT兩個(gè)過程在相互作用下打破“知而不行”的鍛煉現(xiàn)象,而一次又一次的鍛煉啟動(dòng)也意味著鍛煉行為在不斷重復(fù)下進(jìn)入維持階段,如何有效維持鍛煉行為的問題也隨之而來。
2.2 DPT雙管齊下推動(dòng)“行而不輟”:DPT對(duì)鍛煉行為維持的闡釋
一些研究指出,把至少持續(xù)6個(gè)月的身體活動(dòng)或干預(yù)后效界定為改變后的行為得到維持[34]。轉(zhuǎn)換理論模型認(rèn)為維持鍛煉是發(fā)生在行為啟動(dòng)后的單獨(dú)階段,大約需要6個(gè)月來維持鍛煉行為[35]。健康行動(dòng)過程認(rèn)為個(gè)體在鍛煉啟動(dòng)后,需要更強(qiáng)的后意向結(jié)構(gòu)(如行動(dòng)計(jì)劃、應(yīng)對(duì)計(jì)劃、維持自我效能及恢復(fù)自我效能)才能維持住健康行為。不論是鍛煉維持的時(shí)間,還是所需要的心理和行為結(jié)構(gòu),都表明鍛煉維持需要個(gè)體不斷地重復(fù)鍛煉行為。
身體活動(dòng)維持理論指出身體活動(dòng)的維持受個(gè)體心理因素、環(huán)境以及生活壓力共同影響的,確切地說有許多因素都會(huì)沖擊著鍛煉啟動(dòng)的效果[36]。運(yùn)動(dòng)的最小程度努力理論基于進(jìn)化論提出人天然傾向于最小代謝消耗,在鍛煉維持階段個(gè)體可能因疲勞引發(fā)的消極情緒,自然需要理性調(diào)控來克服。身體活動(dòng)采納和維持模型認(rèn)為理性過程(如執(zhí)行功能、自我調(diào)控)對(duì)鍛煉維持十分重要性,只有維持住鍛煉行為最終才能主要依靠鍛煉認(rèn)同或習(xí)慣這些內(nèi)隱且自動(dòng)化的過程影響鍛煉行為。若理性調(diào)控不足,個(gè)體可能將面臨鍛煉行為消失或舊習(xí)復(fù)發(fā)(如久坐)。Roordink等[37]研究發(fā)現(xiàn),自我調(diào)控是鍛煉行為失效和飲食舊習(xí)復(fù)發(fā)的唯一預(yù)測(cè)因子。正如有學(xué)者指出的那樣,像鍛煉這類復(fù)雜的行為要持續(xù)面臨著策略的挑戰(zhàn)和個(gè)體自動(dòng)化行為傾向的威脅,理性調(diào)控在此階段勢(shì)在必行[21]。
然而,情感過程也在鍛煉維持階段進(jìn)一步影響鍛煉行為。鍛煉啟動(dòng)一段時(shí)間后,個(gè)體將逐漸形成身體活動(dòng)與情感、價(jià)值間的關(guān)聯(lián),后續(xù)的行為也將受情感評(píng)估驅(qū)動(dòng)[7]。有學(xué)者指出,在日復(fù)一日中個(gè)體對(duì)鍛煉形成的自動(dòng)情感評(píng)估與內(nèi)隱態(tài)度將逐漸被儲(chǔ)存在記憶網(wǎng)絡(luò)中[38],個(gè)體感知到的內(nèi)部刺激(如想法、感覺、身體感知)或外部刺激能快速且自動(dòng)化地激活記憶中存儲(chǔ)的自動(dòng)情感評(píng)估和行為反應(yīng)[39]。以DPT為基礎(chǔ)的理論模型也認(rèn)為鍛煉情感記憶會(huì)直接影響后續(xù)的鍛煉目標(biāo)與行為[16,20],而且記憶越是逼真越能驅(qū)動(dòng)個(gè)體達(dá)成鍛煉目標(biāo)[40]。個(gè)體對(duì)身體活動(dòng)的內(nèi)隱態(tài)度就是身體活動(dòng)在個(gè)體記憶中被激活后快速、自發(fā)產(chǎn)生的一種情感體驗(yàn),可以被視為一種自動(dòng)化的結(jié)構(gòu)[40],也能預(yù)測(cè)身體活動(dòng)行為[7]。總之,在鍛煉維持階段,DPT情感過程以自動(dòng)情感評(píng)估與內(nèi)隱態(tài)度的形式快速且內(nèi)隱地持續(xù)影響鍛煉行為。
在鍛煉維持階段DPT兩個(gè)過程更是缺一不可,雖然內(nèi)隱態(tài)度是雙過程模型的關(guān)鍵[41],但鍛煉行為的復(fù)雜性會(huì)導(dǎo)致鍛煉情感記憶發(fā)生改變,內(nèi)隱態(tài)度也會(huì)因?yàn)椴煌瑘?chǎng)景、歸因、人格因素等發(fā)生改變[42],所以若想維持鍛煉行為就離不開理性過程。然而,理性過程會(huì)占用個(gè)體更多的認(rèn)知資源造成執(zhí)行功能負(fù)荷,給個(gè)體維持鍛煉帶來執(zhí)行壓力。一項(xiàng)對(duì)避免久坐行為的腦電研究發(fā)現(xiàn),對(duì)于那些處于鍛煉維持階段的個(gè)體而言,他們雖然能快速回避久坐刺激,但需要個(gè)體調(diào)動(dòng)更高水平的監(jiān)控功能來應(yīng)對(duì)行為沖突,也會(huì)引發(fā)個(gè)體更強(qiáng)烈的抑制反應(yīng),這意味著個(gè)體要調(diào)動(dòng)更多大腦皮層的高級(jí)功能來抵消久坐的吸引力[43]。
2.3 DPT雙管齊下促使“習(xí)慣使然”:DPT對(duì)鍛煉習(xí)慣的闡釋
習(xí)慣形成是個(gè)體在穩(wěn)定的情境中,在適當(dāng)獎(jiǎng)勵(lì)下不斷重復(fù)的行為[44]。鍛煉行為不同于其他健康行為,鍛煉是由許多子行動(dòng)構(gòu)成的復(fù)雜行為。隨著個(gè)體獲得了子行動(dòng)的技能,人們將形成每個(gè)子行動(dòng)從啟動(dòng)到執(zhí)行的記憶,UyOjEZ6sFthgm020/ISY6w==子行動(dòng)也將形成自動(dòng)化的行為,每一組子行動(dòng)或多組子行動(dòng)都需要按照順序排列并重復(fù)執(zhí)行,最終才能產(chǎn)生可觀察到的整體行為習(xí)慣[45],而每一環(huán)節(jié)都有可能被干擾。DPT認(rèn)為鍛煉習(xí)慣屬于自動(dòng)化過程,似乎這一解釋與鍛煉行為的復(fù)雜性及該行為所需付出的努力相矛盾。身體活動(dòng)采納和維持模型也認(rèn)為,習(xí)慣形成是從費(fèi)力的理性過程逐漸向不費(fèi)力的情感過程轉(zhuǎn)化的,也就是說在鍛煉行為的不斷重復(fù)中個(gè)體對(duì)行為的控制會(huì)逐漸從顯性加工轉(zhuǎn)變?yōu)殡[性且自動(dòng)化的加工,最終成為自動(dòng)化的習(xí)慣行為。而DPT的兩個(gè)過程分別又在鍛煉習(xí)慣形成中起到怎樣的作用呢?
人們往往認(rèn)為鍛煉是一項(xiàng)需要意志力的行為,但情感對(duì)鍛煉習(xí)慣的形成也有著非常重要的作用,那些感到鍛煉愉悅的人更可能形成鍛煉習(xí)慣[46]。近期一項(xiàng)綜述研究指出,情感態(tài)度是將積極鍛煉意向轉(zhuǎn)化為鍛煉行為的第二大預(yù)測(cè)因素[47]。可見,情感過程不僅利于鍛煉行為的啟動(dòng),也能預(yù)測(cè)鍛煉習(xí)慣形成,就像有學(xué)者指出應(yīng)該在實(shí)驗(yàn)研究中充分考慮情感判斷對(duì)身體活動(dòng)改變的中介作用[48]。運(yùn)動(dòng)的最小程度努力理論認(rèn)為個(gè)體在啟動(dòng)鍛煉之初就已完成對(duì)某項(xiàng)鍛煉的自動(dòng)化選擇過程,也就是說個(gè)體在決策某項(xiàng)鍛煉前大腦就已經(jīng)計(jì)算要消耗多少能量,而個(gè)體對(duì)鍛煉努力的感知不僅會(huì)影響鍛煉的準(zhǔn)備和啟動(dòng),還會(huì)影響鍛煉行為的維持及習(xí)慣形成。因此,個(gè)體依靠已經(jīng)形成的能量消耗偏好來避免付出更多努力,這就是TEMPA所認(rèn)為的,個(gè)體在鍛煉啟動(dòng)之初就選擇符合自己能量消耗偏好的鍛煉行為。該過程不僅體現(xiàn)個(gè)體對(duì)行為選擇的認(rèn)知優(yōu)勢(shì),更體現(xiàn)個(gè)體對(duì)鍛煉所需付出努力的自動(dòng)化感知,在選擇鍛煉時(shí)理性過程與感性過程就已經(jīng)開始相互作用。在鍛煉行為的啟動(dòng)和重復(fù)執(zhí)行中也離不開理性過程。一項(xiàng)基于體育館的鍛煉習(xí)慣形成研究發(fā)現(xiàn),時(shí)間無法預(yù)測(cè)鍛煉習(xí)慣的形成,但關(guān)鍵在于自我調(diào)控[14]。因?yàn)殄憻挓o法讓人短期獲益,需要個(gè)體延遲滿足、管理誘惑的刺激、掌握自我調(diào)控策略,如設(shè)立目標(biāo)、制定計(jì)劃、自我管理策略等[45],進(jìn)而確保鍛煉行為。鍛煉習(xí)慣形成后,不僅能減少對(duì)自我調(diào)控與執(zhí)行功能的負(fù)荷,也將被視為一種自動(dòng)化的反射過程成為鍛煉意向轉(zhuǎn)化為鍛煉行為的關(guān)鍵[47]。
3 未來研究展望
3.1 拓寬DPT在鍛煉促進(jìn)領(lǐng)域的研究對(duì)象
DPT相較于社會(huì)認(rèn)知理論,關(guān)注個(gè)體情感對(duì)鍛煉行為的影響,強(qiáng)調(diào)瞬時(shí)情感對(duì)鍛煉行為的啟動(dòng)作用,在一定程度上解釋“意向-行為”間的差距。研究表明,讓大眾動(dòng)起來本身不僅具有社會(huì)意義,也具有個(gè)人意義。有研究指出,鍛煉啟動(dòng)階段是個(gè)體后期參與身體活動(dòng)頻率的首要預(yù)測(cè)因子[11]。可見,瞬時(shí)情感對(duì)鍛煉的啟動(dòng)作用不僅使鍛煉心理學(xué)研究范式發(fā)生轉(zhuǎn)變,也促使更多學(xué)者開展鍛煉行為促進(jìn)的實(shí)證研究。
但DPT對(duì)鍛煉促進(jìn)的實(shí)證研究主要是以個(gè)體作為研究對(duì)象。隨著大眾鍛煉意識(shí)不斷的提高,健身房、羽毛球館、瑜伽館等商業(yè)機(jī)構(gòu)也日漸升溫,廣場(chǎng)舞更是隨處可見,越來越多人的鍛煉行為已發(fā)展為集體鍛煉行為。實(shí)證研究已指出,對(duì)合作鍛煉計(jì)劃的干預(yù)相較于個(gè)體或二人鍛煉計(jì)劃干預(yù),更能促進(jìn)個(gè)人的鍛煉目標(biāo)達(dá)成,“為了我們”(we for us)的合作性鍛煉計(jì)劃能夠帶來更高水平的個(gè)體鍛煉計(jì)劃及習(xí)慣[49]。還有研究通過“父母支持”的干預(yù)方法,促進(jìn)兒童參與身體活動(dòng)[50],也有研究針對(duì)初為父母群體鍛煉不足的現(xiàn)象開展干預(yù)[51]。這些研究都在提示研究者,在鍛煉促進(jìn)領(lǐng)域可以瞄定不同群體開展干預(yù)研究,探究不同人際互動(dòng)中情感過程與理性過程對(duì)鍛煉行為的影響,豐富以DPT為基礎(chǔ)的理論模型,也為鍛煉行為促進(jìn)的干預(yù)提供思路。
3.2 探索DPT對(duì)鍛煉促進(jìn)的特色干預(yù)方法
DPT不僅打破“知而不行”,也在推動(dòng)個(gè)體“行而不輟”,通過提高個(gè)體在鍛煉中的愉悅情感來提高鍛煉的依從性[11]。一項(xiàng)實(shí)證研究,通過對(duì)比提高抗阻強(qiáng)度組和降低抗阻強(qiáng)度組的鍛煉情感反應(yīng),發(fā)現(xiàn)逐次降低訓(xùn)練強(qiáng)度可以引發(fā)被試者對(duì)抗阻訓(xùn)練的積極情感和情感評(píng)價(jià),而這種積極的鍛煉情感也成為個(gè)體后續(xù)繼續(xù)參與鍛煉的重要預(yù)測(cè)指標(biāo)[52]。
但這種干預(yù)思路就本質(zhì)而言是為更好地啟動(dòng)個(gè)體下一次的鍛煉行為,而每個(gè)個(gè)體的鍛煉意向強(qiáng)度不同,這意味著需要進(jìn)一步形成具有DPT特色的鍛煉干預(yù)策略和方法。Lopes等[53]基于健康行動(dòng)過程,使用機(jī)器人作為健康信息的傳遞者進(jìn)行干預(yù)研究,發(fā)現(xiàn)可以提高被試者健康行為(包括身體活動(dòng))的動(dòng)機(jī)和行為。Liu等[54]基于多過程行動(dòng)控制框架開發(fā)一套網(wǎng)絡(luò)干預(yù)系統(tǒng)來促進(jìn)身體活動(dòng),結(jié)果發(fā)現(xiàn)可以顯著促進(jìn)個(gè)體的身體活動(dòng)。有研究者基于DPT,讓被試者通過回顧不同的身體活動(dòng)的情境記憶來比較活動(dòng)者與不活動(dòng)者的記憶差異,發(fā)現(xiàn)過去情感體驗(yàn)?zāi)軌蛩茉焐眢w活動(dòng)行為,指出情境記憶是理性-情感過程的核心[40],而這一結(jié)論又能如何開發(fā)為鍛煉維持的干預(yù)策略,仍待更多學(xué)者探究。因此,未來應(yīng)進(jìn)一步開發(fā)并形成具有DPT特色的干預(yù)方案和情感鍛煉處方。
3.3 深化DPT與其他理論模型的整合
DPT認(rèn)為鍛煉這種復(fù)雜行為習(xí)慣就是從理性過程對(duì)行為的控制逐漸轉(zhuǎn)向隱性自動(dòng)化的過程。感知行為控制(80%)和情感態(tài)度(55%)也便成為最常見且重要的鍛煉行為的預(yù)測(cè)因素[47]。但若要將這一結(jié)論轉(zhuǎn)化為鍛煉方案,形成可操作性的鍛煉進(jìn)程設(shè)置及鍛煉行為維持策略,就需要DPT進(jìn)一步與其他理論模型進(jìn)行整合。
以行動(dòng)控制理論為基礎(chǔ)的理論模型常具有詳盡的行為改變技術(shù)和方法,如健康行動(dòng)過程通過行動(dòng)計(jì)劃、應(yīng)對(duì)計(jì)劃、維持自我效能、恢復(fù)自我效能來維持健康行為;多過程行動(dòng)控制框架通過調(diào)節(jié)目標(biāo)、計(jì)劃、反饋和動(dòng)機(jī)來維持鍛煉行為,也進(jìn)一步將DPT的雙過程拓展成為反思、調(diào)節(jié)及反射過程,不僅體現(xiàn)DPT與計(jì)劃行為理論的整合,更對(duì)鍛煉行為干預(yù)具有指導(dǎo)性。因此,DPT應(yīng)和其他理論不斷整合,注重對(duì)鍛煉行為精細(xì)化的構(gòu)念,聚焦鍛煉的心理結(jié)構(gòu)向行為的轉(zhuǎn)化。也可以借鑒助推和助力理論,從個(gè)人和環(huán)境不同的視角深入探究?jī)蓚€(gè)過程對(duì)鍛煉行為的影響,雙管齊下地形成鍛煉促進(jìn)的更多有效方法。
致謝:感謝天津體育學(xué)院朱良昊對(duì)本文提出的寶貴意見。
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