Zielińska, N.; Ziółkowska, A.; Winiarska, A.; Świtaj, K.; Wojtczak, P.; Kujawska, A.; Perkowski, R.; Androsiuk-Perkowska, J.; Gajos, M.; Topka, W. Results of Fullerton Test in Older People. Group Comparison Due to the Nordic Walking and Long Walks Undertaking. J Educ Health Sport 2017, 7, 247-257.