United Nations. World Population Prospects: The 2019 Revision. 2019. Retrieved from: https://population.un.org/wpp/.
Google Scholar
Rowe JW, Kahn RL. Successful aging 2.0: Conceptual expansions for the 21st century. J Gerontol B. 2015;70(4):593–6.
Article
Google Scholar
World Health Organisation. World report on ageing and health. 2015. Retrieved from: https://apps.who.int/iris/handle/10665/186463.
Arem H, Moore SC, Patel A, Hartge P, Berrington de Gonzalez A, Visvanathan K, et al. Leisure Time Physical Activity and Mortality: A Detailed Pooled Analysis of the Dose-Response Relationship. JAMA. Intern Med. 2015;175(6):959–67.
Google Scholar
Jak AJ. The impact of physical and mental activity on cognitive aging. Curr Top Behav Neurosci. 2012;10:273–91.
Article
PubMed
Google Scholar
Ströhle A. Physical activity, exercise, depression and anxiety disorders. J Neural Transm. 2008;116(6):777.
Article
PubMed
Google Scholar
Morris JN, Hardman AE. Walking to health. Sports Medicine. 1997;23(5):306–32.
Article
CAS
PubMed
Google Scholar
Murphy MH, Nevill AM, Murtagh EM, Holder RL. The effect of walking on fitness, fatness and resting blood pressure: A meta-analysis of randomised, controlled trials. Preventive Med. 2007;44(5):377–85.
Article
Google Scholar
Kassavou A, Turner A, French DP. Do interventions to promote walking in groups increase physical activity? A meta-analysis. Int J Behav Nutr Phys Act. 2013;10:18.
Article
PubMed
PubMed Central
Google Scholar
Hanson S, Jones A. Is there evidence that walking groups have health benefits? A systematic review and meta-analysis. Br J Sports Med. 2015;49(11):710.
Article
PubMed
Google Scholar
Kritz M, Thøgersen-Ntoumani C, Mullan B, Stathi A, Ntoumanis N. “It’s better together”: A nested longitudinal study examining the benefits of walking regularly with peers versus primarily alone in older adults. J Aging Phys Act. 2021;29(3):455–65.
Article
PubMed
Google Scholar
Stevens M, Cruwys T. Membership in sport or exercise groups predicts sustained physical activity and longevity in older adults compared to physically active matched controls. Ann Behav Med. 2020;54(8):557–66.
Article
PubMed
Google Scholar
Hwang J, Wang L, Siever J, Medico TD, Jones CA. Loneliness and social isolation among older adults in a community exercise program: a qualitative study. Aging Ment Health. 2019;23(6):736–42.
Article
PubMed
Google Scholar
Tajfel H, Turner JC. An integrative theory of intergroup conflict. In: Austin WG, Worchel S, editors. The social psychology of intergroup relations. Monterey, CA: Brooks-Cole; 1979. p. 33–47.
Google Scholar
Turner JC, Hogg MA, Oakes PJ, Reicher SD, Wetherell MS. Rediscovering the social group: A self-categorization theory. Oxford: Blackwell; 1987.
Google Scholar
Haslam SA, Fransen K, Boen F. The new psychology of sport and exercise: The social identity approach: Sage Publications Ltd; 2020. p. 506.
Haslam C, Jetten J, Cruwys T, Dingle G, Haslam SA. The new psychology of health: Unlocking the social cure. London: Routledge; 2018. p. 510.
Book
Google Scholar
Haslam C, Cruwys T, Haslam SA, Dingle GA, Chang MX-L. Groups 4 Health: Evidence that a social-identity intervention that builds and strengthens social group membership improves mental health. J Affect Disord. 2016;194:188–95.
Article
PubMed
Google Scholar
Steffens NK, La Rue CJ, Haslam C, Walter ZC, Cruwys T, Munt KA, et al. Social identification-building interventions to improve health: A systematic review and meta-analysis. Health Psychol Rev. 2020;15(1):85–112.
Article
Google Scholar
Stevens M, Rees T, Polman R. Social identification, exercise participation, and positive exercise experiences: Evidence from parkrun. J Sports Sci. 2019;37(2):221–8.
Article
PubMed
Google Scholar
Stevens M, Cruwys T, Rees T, Haslam SA, Boen F, Fransen K. Physical activity. In: Haslam SA, Fransen K, Boen F, editors. The new psychology of sport and exercise: The Social Identity Approach. London: Sage Publications Ltd; 2020. p. 167–86.
Google Scholar
Elgar FJ, Davis CG, Wohl MJ, Trites SJ, Zelenski JM, Martin MS. Social capital, health and life satisfaction in 50 countries. Health Place. 2011;17(5):1044–53.
Article
PubMed
Google Scholar
National Academies of Sciences E, Medicine. Social isolation and loneliness in older adults: Opportunities for the health care system. Washington, DC: The National Academies Press; 2020. 316 p.
Haslam SA, Reicher SD, Platow MJ. The new psychology of leadership: Identity, influence and power. New York: Psychology Press; 2011. p. 267.
Google Scholar
Stevens M, Rees T, Cruwys T. Social identity leadership in sport and exercise: Current status and future directions. Psychol Sport Exerc. 2021;55:101931.
Article
Google Scholar
Steffens NK, Fransen K, Haslam SA. Leadership. In: Haslam SA, Fransen K, Boen F, editors. The new psychology of sport and exercise: The Social Identity Approach. London: Sage Publications Ltd; 2020. p. 41–58.
Google Scholar
Fransen K, Haslam SA, Steffens NK, Mallett C, Peters K, Boen F. Making ‘us’ better: High-quality athlete leadership relates to health and burnout in professional Australian football teams. Eur J Sport Sci. 2020;20(7):953–63.
Article
PubMed
Google Scholar
Fransen K, McEwan D, Sarkar M. The impact of identity leadership on performance and well-being in team sport: Is psychological safety the missing link? Psychol Sport Exerc. 2020;51:101763.
Article
Google Scholar
Steffens NK, Slade EL, Stevens M, Haslam SA, Rees T. Putting the ‘we’ into workout: The association of identity leadership with exercise class attendance and effort, and the mediating role of group identification and comfort. Psychol Sport Exerc. 2019;45:101544.
Article
Google Scholar
Stevens M, Rees T, Coffee P, Haslam SA, Steffens NK, Polman R. Leaders promote attendance in sport and exercise sessions by fostering social identity. Scand J Med Sci Sports. 2018;28:2100–8.
Article
CAS
PubMed
Google Scholar
Mertens N, Boen F, Haslam SA, Steffens NK, Bruner MW, Barker J, et al. Harnessing the power of ‘us’: A randomized wait-list controlled trial of the 5R Shared Leadership Development Program (5RS) in basketball teams. Psychol Sport Exerc. 2021;54:101936.
Article
Google Scholar
Mertens N, Boen F, Steffens NK, Cotterill ST, Haslam SA, Fransen K. Leading together towards a stronger ‘us’: An experimental test of the effectiveness of the 5R Shared Leadership Program in basketball teams. J Sci Med Sport. 2020;23(8):770–5.
Article
PubMed
Google Scholar
Stevens M, Rees T, Steffens NK, Haslam SA, Coffee P, Polman R. Leaders’ creation of shared identity impacts group members’ effort and performance: Evidence from an exercise task. PLoS ONE. 2019;14(7):e0218984.
Article
CAS
PubMed
PubMed Central
Google Scholar
Miller AJ, Slater MJ, Turner MJ. Coach identity leadership behaviours are positively associated with athlete resource appraisals: The mediating roles of relational and group identification. Psychol Sport Exerc. 2020;51:101755.
Article
Google Scholar
Fransen K, Steffens NK, Haslam SA, Vanbeselaere N, Vande Broek G, Boen F. We will be champions: Leaders' confidence in 'us' inspires team members' team confidence and performance. Scand J Med Sci Sports. 2016;26(12):1455–69.
Article
CAS
PubMed
Google Scholar
Fransen K, Haslam SA, Steffens NK, Vanbeselaere N, De Cuyper B, Boen F. Believing in us: Exploring leaders’ capacity to enhance team confidence and performance by building a sense of shared social identity. J Exp Psych Appl. 2015;21(1):89–100.
Article
Google Scholar
Stevens M, Rees T, Coffee P, Steffens NK, Haslam SA, Polman R. Leading us to be active: A two-wave test of relationships between identity leadership, group identification, and attendance. Sport Exerc Perform Psychol. 2020;9(1):128–42.
Google Scholar
Fransen K, Decroos S, Vande Broek G, Boen F. Leading from the top or leading from within? A comparison between coaches' and athletes' leadership as predictors of team identification, team confidence, and team cohesion. Int J Sports Sci Coach. 2016;11(6):757–71.
Article
Google Scholar
Thøgersen-Ntoumani C, Quested E, Smith BS, Nicholas J, McVeigh J, Fenton SAM, et al. Feasibility and preliminary effects of a peer-led motivationally-embellished workplace walking intervention: A pilot cluster randomized trial (the START Trial). Contemp Clin Trials. 2020;91:105969.
Article
PubMed
Google Scholar
Kritz M, Thøgersen-Ntoumani C, Mullan B, McVeigh J, Ntoumanis N. Effective peer leader attributes for the promotion of walking in older adults. Gerontologist. 2020;60(6):1137–48.
Article
PubMed
Google Scholar
Hulteen RM, Waldhauser KJ, Beauchamp MR. Promoting health-enhancing physical activity: a state-of-the-art review of peer-delivered interventions. Curr Obes Rep. 2019;8(4):341–53.
Article
PubMed
Google Scholar
Ginis KA, Nigg CR, Smith AL. Peer-delivered physical activity interventions: An overlooked opportunity for physical activity promotion. Transl Behav Med. 2013;3(4):434–43.
Article
PubMed
PubMed Central
Google Scholar
Fransen K, Haslam SA, Steffens NK, Mallett CJ, Peters K, Mertens N, et al. All for us and us for all: Introducing the 5R Shared Leadership Program. Psychol Sport Exerc. 2020;51:101762.
Article
Google Scholar
Fransen K, Vanbeselaere N, De Cuyper B, Vande Broek G, Boen F. The myth of the team captain as principal leader: Extending the athlete leadership classification within sport teams. J Sports Sci. 2014;32(14):1389–97.
Article
PubMed
Google Scholar
Haslam SA, Steffens NK, Peters K, Boyce RA, Mallett CJ, Fransen K. A social identity approach to leadership development: The 5R program. J Pers Psychol. 2017;16(3):113–24.
Google Scholar
Slater MJ, Barker JB. Doing social identity leadership: Exploring the efficacy of an identity leadership intervention on perceived leadership and mobilization in elite disability soccer. J Appl Sport Psychol. 2019;31(1):65–86.
Article
Google Scholar
Edelmann CM, Boen F, Fransen K. The power of empowerment: Predictors and benefits of shared leadership in organizations. Front Psychol. 2020;11:3281.
Article
Google Scholar
Fransen K, Mertens N, Cotterill ST, Vande Broek G, Boen F. From autocracy to empowerment: Teams with shared leadership perceive their coaches to be better leaders. J Appl Sport Psychol. 2020;32(1):5–27.
Article
Google Scholar
Pelssers J, Delecluse C, Opdenacker J, Kennis E, Van Roie E, Boen F. "Every step counts!": Effects of a structured walking intervention in a community-based senior organization. J Aging Phys Act. 2013;21(2):167–85.
Article
PubMed
Google Scholar
Faul F, Erdfelder E, Buchner A, Lang A-G. Statistical power analyses using G*Power 3.1: Tests for correlation and regression analyses. Behav Res Methods. 2009;41:1149–60.
Article
PubMed
Google Scholar
Liu Y, Lachman ME. A group-based walking study to enhance physical activity among older adults: The role of social engagement. Res Aging. 2021;43(9-10):368–77.
Article
PubMed
Google Scholar
Molino-Lova R, Pasquini G, Vannetti F, Paperini A, Forconi T, Polcaro P, et al. Effects of a structured physical activity intervention on measures of physical performance in frail elderly patients after cardiac rehabilitation: a pilot study with 1-year follow-up. Intern Emerg Med. 2013;8(7):581–9.
Article
PubMed
Google Scholar
Steffens NK, Haslam SA, Reicher SD, Platow MJ, Fransen K, Yang J, et al. Leadership as social identity management: Introducing the Identity Leadership Inventory (ILI) to assess and validate a four-dimensional model. Leadersh Q. 2014;25:1001–24.
Article
Google Scholar
Doosje B, Ellemers N, Spears R. Perceived intragroup variability as a function of group status and identification. J Exp Soc Psychol. 1995;31(5):410–36.
Article
Google Scholar
Carron AV, Widmeyer WN, Brawley LR. The development of an instrument to assess cohesion in sport teams - The Group Environment Questionnaire. Journal of Sport Psychology. 1985;7(3):244–66.
Article
Google Scholar
Tennant R, Hiller L, Fishwick R, Platt S, Joseph S, Weich S, et al. The Warwick-Edinburgh Mental Well-being Scale (WEMWBS): development and UK validation. Health Qual Life Outcomes. 2007;5(1):63.
Article
PubMed
PubMed Central
Google Scholar
Craig CL, Marshall AL, Sjöström M, Bauman AE, Booth ML, Ainsworth BE, et al. International physical activity questionnaire: 12-country reliability and validity. Med Sci Sports Exerc. 2003;35(8):1381–95.
Article
PubMed
Google Scholar
Ainsworth BE, Haskell WL, Whitt MC, Irwin ML, Swartz AM, Strath SJ, et al. Compendium of physical activities: an update of activity codes and MET intensities. Med Sci Sports Exerc. 2000;32(Supplement):S498–516.
Article
CAS
PubMed
Google Scholar
R Core Team. R. A language and environment for statistical computing. Vienna, Austria: R Foundation for Statistical Computing; 2021.
Google Scholar
Muthén LK, Muthén BO. Mplus User’s Guide. 8th ed. Los Angeles, CA: Muthén & Muthén; 2017.
McNeish D, Stapleton LM, Silverman RD. On the unnecessary ubiquity of hierarchical linear modeling. Psychol Methods. 2017;22(1):114–40.
Article
PubMed
Google Scholar
Hu LT, Bentler PM. Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Struct Equ Modeling. 1999;6(1):1–55.
Article
Google Scholar
Kwak L, Kremers S, Walsh A, Brug H. How is your walking group running? Health Educ. 2006;106(1):21–31.
Article
Google Scholar
Kassavou A, Turner A, French DP. The role of walkers’ needs and expectations in supporting maintenance of attendance at walking groups: A longitudinal multi-perspective study of walkers and walk group leaders. PLoS ONE. 2015;10(3):e0118754.
Article
PubMed
PubMed Central
CAS
Google Scholar
World Health Organization. WHO guidelines on physical activity and sedentary behaviour. 2020. Retrieved from: https://apps.who.int/iris/handle/10665/336656.
Rothman AJ. Toward a theory-based analysis of behavioral maintenance. Health Psychology. 2000;19(1s):64–9.
Article
CAS
PubMed
Google Scholar
Barford A, Dorling D, Smith GD, Shaw M. Life expectancy: Women now on top everywhere. BMJ. 2006;332(7545):808.
Article
PubMed
PubMed Central
Google Scholar
Pollard TM, Wagnild JM. Gender differences in walking (for leisure, transport and in total) across adult life: A systematic review. BMC Public Health. 2017;17(1):341.
Article
PubMed
PubMed Central
Google Scholar
Rigby BP, Dodd-Reynolds CJ, Oliver EJ. Inequities and inequalities in outdoor walking groups: a scoping review. Public Health Rev. 2020;41(1):4.
Article
PubMed
PubMed Central
Google Scholar
Kwasnicka D, Donnachie C, Thøgersen-Ntoumani C, Hunt K, Gray CM, Ntoumanis N, et al. The Aussie-FIT process evaluation: feasibility and acceptability of a weight loss intervention for men, delivered in Australian Football League settings. Psychology & Health. 2021;1-20.
Hunt K, Wyke S, Bunn C, Donnachie C, Reid N, Gray CM. Scale-up and scale-out of a gender-sensitized weight management and healthy living program delivered to overweight men via professional sports clubs: The wider implementation of Football Fans in Training (FFIT). Int J Environ Res Public Health. 2020;17(2):584.
Article
PubMed Central
Google Scholar
Moschny A, Platen P, Klaaßen-Mielke R, Trampisch U, Hinrichs T. Barriers to physical activity in older adults in Germany: a cross-sectional study. Int J Behav Nutr Phys Act. 2011;8(1):121.
Article
PubMed
PubMed Central
Google Scholar
Burton E, Farrier K, Hill KD, Codde J, Airey P, Hill A-M. Effectiveness of peers in delivering programs or motivating older people to increase their participation in physical activity: Systematic review and meta-analysis. J Sports Sci. 2018;36(6):666–78.
Article
PubMed
Google Scholar
McCann J, Ridgers ND, Carver A, Thornton LE, Teychenne M. Effective recruitment and retention strategies in community health programs. Health Promot J Austr. 2013;24(2):104–10.
Article
PubMed
Google Scholar
Capalb DJ, O'Halloran P, Liamputtong P. Why older people engage in physical activity: an exploratory study of participants in a community-based walking program. Aust J Prim Health. 2014;20(1):74–8.
Article
PubMed
Google Scholar
Wurzer BM, Hurkmans EJ, Waters DL. The use of peer-led community-based programs to promote healthy aging. Curr Geriatr Rep. 2017;6(3):202–11.
Article
Google Scholar
Tarrant M, Haslam C, Carter M, Calitri R, Haslam SA. Social identity interventions. In: Hagger MS, Cameron LD, Hamilton K, Hankonen N, Lintunen T, editors. Behavior change interventions: Practical guides to behavior change: Cambridge University Press; 2020. p. 649–60.