The influence of sedentary and active work environments on wellness - du Toit, Peet; Naicker, Lee-Anne; Nortje, Evangeline; Kleynhans, Michael; FerreiraRonl; Gericke, Gerda (Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / South African Journal of Science and Technology, 2013)