[
[1] Almada, F., Fernando, C., Lopes, H., Vicente, A. & Vitória, M. (2008). A Rotura – A Sistemática das Actividades Desportivas. Edição VML, Torres Novas.
]Search in Google Scholar
[
[2] Bastien, G., Willems, P., Schepens, B., & Heglund, N. (2005). Effect of load and speed on the energetic cost of human walking. Eur J Appl Physiology, 94, 76–83.
]Search in Google Scholar
[
[3] Boniface, M. (2000) Towards an understanding of flow and other positive experience phenomena within outdoor and adventurous activities. Journal of Adventure Education & Outdoor Learning, 1(1), 55–68.
]Search in Google Scholar
[
[4] Csikszentmihalyi, M. (1975). Beyond boredom and anxiety. San Francisco: Jossey-Bass.
]Search in Google Scholar
[
[5] Davies, S.& Mackinnon, S. (2017). The energetics of walking on sand and grass at various speeds. Ergonomics, 49(7) 651–660.
]Search in Google Scholar
[
[6] Dorwart, C., Moore, R. & Leung, Y. (2009). Visitors’ Perceptions of a Trail Environment and Effects on Experiences: A Model for Nature-Based Recreation Experiences, Leisure Sciences, 32(1), 33–54.
]Search in Google Scholar
[
[7] Fernando, C., Prudente, J., Lopes, H. & Vicente, A. (2018). Does Decision Making Affect Heart Rate in Trails? Heart Rate Response to Treadmill Walk with and without Adaptation. American International Journal of Contemporary Research, 8(1) 24–28.
]Search in Google Scholar
[
[8] Florido, J. (2010). Turismo activo sostenible y esperiencia óptima en espacios naturales protegidos de Andalucía. Doctoral Thesis.
]Search in Google Scholar
[
[9] Larsen, S. (2007) Aspects of a Psychology of the Tourist Experience, Scandinavian Journal of Hospitality and Tourism, 7(1), 7-18.
]Search in Google Scholar
[
[10] Lee, S., Graefe, A. & Li, C. (2007). The effects of specialization and gender on motivation and preferences for site attributes in paddling. Leisure Sciences, 29, 355–373.
]Search in Google Scholar
[
[11] Nenad, Ž., Slobodan, A., Ćirić, M., Ranko, K. &Nebojša, R. (2012). The difference between walking and hiking of students realized as a regular teaching ativity. Gymnasium, 2(xiii), 248–254.
]Search in Google Scholar
[
[12] Ntoumanis, N. (2001). A self-determination approach to the understanding of motivation in physical education. British Journal of Educational Psychology, 71, 225–242.
]Search in Google Scholar
[
[13] O’Connor, S., Xu, H. & Kuo, A. (2012). Energetic cost of walking with increase step variability. Gait & Posture, 36, 102–107.
]Search in Google Scholar
[
[14] Peric, M. (2015). Managing Sports Experiences in the Context of Tourism. UTMS Journal of Economics 6(1) 85–97.
]Search in Google Scholar
[
[15] Priest, S. & Gass, M.A. (1997). Effective Leadership in Adventure Programming. Champaign, IL: Human Kinetics.
]Search in Google Scholar
[
[16] Selstad, L. (2007): ‘The Social Anthropology of the Tourist Experience’. Exploring the ‘Middle Role. Scandinavian Journal of Hospitality and Tourism, 7(1), 19–33.
]Search in Google Scholar
[
[17] Torbidoni, E., Grau H. & Camps, A. (2004). Trail Preferences and Visitor Characteristics in Aigüestortes i Estany de Sant Maurici National Park, Spain. Mountain Research and Development, 25(1), 51–59.
]Search in Google Scholar
[
[18] Tsaur, S., Lin, W. & Cheng, T. (2015). Toward a Structural Model of Challenge Experience in Adventure Recreation. Journal of Leisure Research, 47(3), 322–336.
]Search in Google Scholar
[
[19] Weed, M. (2005). Sports tourism theory and method: concepts, issues & epistemologies. European Sport Management Quarterly, 5(3), 229–242.
]Search in Google Scholar
[
[20] Weed, M. (2008). Sports Tourism Experiences, Journal of Sport & Tourism,13(1), 1–4.
]Search in Google Scholar
[
[21] Weed, M., & Bull, C. (2009). Sport Tourism: Participants, policy and providers. 2nd ed. Oxford: Elsevier Butterworth Heinemann.
]Search in Google Scholar
