American Heart Association (2016) Prevention and Treatment of Metabolic Syndrome. Available at: https://www.heart.org/en/health-topics/metabolic-syndrome/prevention-and-treatment-of-metabolic-syndrome
Google Scholar Ait-hadad, W, Bénard, M, Shankland, R, et al. (2020) Optimism is associated with diet quality, food group consumption and snacking behavior in a general population. Nutrition Journal 19(1): 6.
Google Scholar | Crossref | Medline Alberti, KG, Eckel, RH, Grundy, SM, et al. (2009) Harmonizing the metabolic syndrome: a joint interim statement of the international diabetes federation task force on epidemiology and prevention; national heart, lung, and blood institute; American heart association; world heart federation; international atherosclerosis society; and international association for the study of obesity. Circulation 120(16): 1640–1645.
Google Scholar | Crossref | Medline | ISI Babio, N, Bulló, M, Basora, J, et al. (2009) Adherence to the mediterranean diet and risk of metabolic syndrome and its components. Nutrition, Metabolism and Cardiovascular Diseases 19(8): 563–570.
Google Scholar | Crossref | Medline | ISI Baumeister, RF, Bratslavsky, E, Finkenauer, C, et al. (2001) Bad is Stronger than Good. Review of General Psychology 5(4): 323–370.
Google Scholar | SAGE Journals Blanchflower, DG, Oswald, AJ, Stewart-Brown, S (2013) Is psychological well-being linked to the consumption of fruit and vegetables? Social Indicators Research 114(3): 785–801.
Google Scholar | Crossref | ISI Boehm, JK, Chen, Y, Koga, H, et al. (2018) Is optimism associated with healthier cardiovascular-related behavior? Circulation Research 122(8): 1119–1134.
Google Scholar | Crossref | Medline Bongers, P, Jansen, A, Havermans, R, et al (2013) Happy eating. the underestimated role of overeating in a positive mood. Appetite 67: 74–80.
Google Scholar | Crossref | Medline Callahan, CM, Unverzagt, FW, Hui, SL, et al. (2002) Six-item screener to identify cognitive impairment among potential subjects for clinical research. Medical Care 40(9): 771–781.
Google Scholar | Crossref | Medline | ISI Cardi, V, Leppanen, J, Treasure, J (2015) The effects of negative and positive mood induction on eating behaviour: a meta-analysis of laboratory studies in the healthy population and eating and weight disorders. Neuroscience and Biobehavioral Reviews 57: 299–309.
Google Scholar | Crossref | Medline | ISI Chen, X, Cheskin, LJ, Shi, L, et al. (2011) Americans with diet-related chronic diseases report higher diet quality than those without these diseases. The Journal of Nutrition 141(8): 1543–1551.
Google Scholar | Crossref | Medline Conner, TS, Brookie, KL, Carr, AC, et al. (2017) Let them eat fruit! The effect of fruit and vegetable consumption on psychological well-being in young adults: a randomized controlled trial. Plos One 12(2): e0171206.
Google Scholar | Crossref | Medline Drabble, L, Trocki, KF, Salcedo, B, et al. (2016) Conducting qualitative interviews by telephone: lessons learned from a study of alcohol use among sexual minority and heterosexual women. Qualitative Social Work 15(1): 118–133.
Google Scholar | SAGE Journals | ISI Elo, S, Kyngäs, H (2008) The qualitative content analysis process. Journal of Advanced Nursing 62(1): 107–115.
Google Scholar | Crossref | Medline | ISI Evers, C, Adriaanse, M, de Ridder, DTD, et al. (2013) Good mood food. positive emotion as a neglected trigger for food intake. Appetite 68: 1–7.
Google Scholar | Crossref | Medline Evers, C, Dingemans, A, Junghans, AF, et al. (2018) Feeling bad or feeling good, does emotion affect your consumption of food? A meta-analysis of the experimental evidence. Neuroscience and Biobehavioral Reviews 92: 195–208.
Google Scholar | Crossref | Medline Falk, LW, Sobal, J, Bisogni, CA, et al. (2001) Managing healthy eating: definitions, classifications, and strategies. Health Education & Behavior 28(4): 425–439.
Google Scholar | SAGE Journals | ISI Fappa, E, Yannakoulia, M, Pitsavos, C, et al. (2008) Lifestyle intervention in the management of metabolic syndrome: could we improve adherence issues? Nutrition 24(3): 286–291.
Google Scholar | Crossref | Medline Fedorikhin, A, Patrick, VM (2010) positive mood and resistance to temptation: the interfering influence of elevated arousal. Journal of Consumer Research 37(4): 698–711.
Google Scholar | Crossref Firth, J, Gangwisch, JE, Borisini, A, et al. (2020) Food and mood: how do diet and nutrition affect mental wellbeing? Bmj: British Medical Journal 369: m2382.
Google Scholar | Crossref Fredrickson, BL (2004) The broaden–and–build theory of positive emotions. Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 359(1449): 1367–1377. doi: 10.1098/rstb.2004.1512.
Google Scholar | Crossref | Medline | ISI Giltay, EJ, Geleijnse, JM, Zitman, FG, et al. (2007) Lifestyle and dietary correlates of dispositional optimism in men: the Zutphen elderly study. Journal of Psychosomatic Research 63(5): 483–490.
Google Scholar | Crossref | Medline | ISI Hingle, MD, Wertheim, BC, Tindle, HA, et al. (2014) Optimism and diet quality in the women’s health initiative. Journal of the Academy of Nutrition and Dietetics 114(7): 1036–1045.
Google Scholar | Crossref | Medline Hirode, G, Wong, RJ (2020) Trends in the prevalence of metabolic syndrome in the United States, 2011-2016. Jsls: Journal of the Society of Laparoendoscopic Surgeons 323(24): 2526–2528.
Google Scholar Huffman, JC, DuBois, CM, Mastromauro, CA, et al. (2016) Positive psychological states and health behaviors in acute coronary syndrome patients: a qualitative study. Journal of Health Psychology 21(6): 1026–1036.
Google Scholar | SAGE Journals | ISI Jacka, FN, O'Neil, A, Opie, R, et al. (2017) A randomised controlled trial of dietary improvement for adults with major depression (the ‘SMILES’ trial). BMC Medicine 15(1): 23.
Google Scholar | Crossref | Medline Kelloniemi, H, Ek, E, Laitinen, J (2005) Optimism, dietary habits, body mass index and smoking among young finnish adults. Appetite 45(2): 169–176.
Google Scholar | Crossref | Medline | ISI Lakka, TA, Laaksonen, DE (2007) Physical activity in prevention and treatment of the metabolic syndrome. Applied Physiology, Nutrition, and Metabolism 32(1): 76–88.
Google Scholar | Crossref | Medline | ISI Lee, PH, Macfarlane, DJ, Lam, TH, et al. (2011) Validity of the international physical activity questionnaire short form (IPAQ-SF): a systematic review. International Journal of Behavioral Nutrition and Physical Activity 8: 115.
Google Scholar | Crossref | Medline | ISI Macht, M (2008) How emotions affect eating: a five-way model. Appetite 50(1): 1–11.
Google Scholar | Crossref | Medline | ISI Millstein, RA, Huffman, JC, Thorndike, AN, et al. (2020a) How do positive psychological constructs affect physical activity engagement among individuals at high risk for chronic health conditions? A qualitative study. [Epub ahead of print 2020/09/06] Journal of Physical Activity & Health. DOI: 10.1123/jpah.2019-0295. 1-10.
Google Scholar | Crossref | Medline Millstein, RA, Thorndike, AN, Kim, S, et al. (2020b) A community-based positive psychology group intervention to promote physical activity among people with metabolic syndrome: Proof of concept results to inform a pilot randomized controlled trial protocol. Contemporary Clinical Trials Communications 19: 100626.
Google Scholar | Crossref | Medline Mujcic, R, Oswald, AJ (2016) Evolution of well-being and happiness after increases in consumption of fruit and vegetables. American Journal of Public Health 106(8): 1504–1510.
Google Scholar | Crossref | Medline Palinkas, LA, Horwitz, SM, Green, CA, et al. (2015) Purposeful sampling for qualitative data collection and analysis in mixed method implementation research. Administration and Policy in Mental Health 42(5): 533–544.
Google Scholar | Crossref | Medline | ISI Pänkäläinen, M, Fogelholm, M, Valve, R, et al. (2018) Pessimism, diet, and the ability to improve dietary habits: a three-year follow-up study among middle-aged and older finnish men and women. Nutrition Journal 17(1): 92.
Google Scholar | Crossref | Medline Piercy, KL, Troiano, RP, Ballard, RM, et al. (2018) The physical activity guidelines for Americans. Jama 320(19): 2020–2028.
Google Scholar | Crossref | Medline Rodríguez-Monforte, M, Sánchez, E, Barrio, F, et al. (2017) Metabolic syndrome and dietary patterns: a systematic review and meta-analysis of observational studies. European Journal of Nutrition 56(3): 925–947.
Google Scholar | Crossref | Medline Saunders, B, Sim, J, Kingstone, T, et al. (2018) Saturation in qualitative research: exploring its conceptualization and operationalization. Quality & Quantity 52(4): 1893–1907.
Google Scholar | Crossref | Medline Seligman, ME, Steen, TA, Park, N, et al. (2005) Positive psychology progress: empirical validation of interventions. American Psychologist 60(5): 410–421.
Google Scholar | Crossref | Medline | ISI Sperling, LS, Mechanick, JI, Neeland, IJ, et al. (2015) the cardiometabolic health alliance. Journal of the American College of Cardiology 66(9): 1050–1067.
Google Scholar | Crossref | Medline Tong, A, Sainsbury, P, Craig, J (2007) Consolidated criteria for reporting qualitative research (COREQ): a 32-item checklist for interviews and focus groups. International Journal for Quality in Health Care 19(6): 349–357.
Google Scholar | Crossref | Medline | ISI Van Cappellen, P, Rice, EL, Catalino, LI, et al. (2018) Positive affective processes underlie positive health behaviour change. Psychology & Health 33(1): 77–97.
Google Scholar | Crossref | Medline Whatnall, MC, Patterson, AJ, Burrows, TL, et al. (2019) Higher diet quality in university students is associated with higher academic achievement: a cross‐sectional study. Journal of Human Nutrition and Dietetics 32(3): 321–328.
Google Scholar | Crossref | Medline White, BA, Horwath, CC, Conner, TS (2013) Many apples a day keep the blues away - daily experiences of negative and positive affect and food consumption in young adults. British Journal of Health Psychology 18(4): 782–798.
Google Scholar | Crossref | Medline