1. The optimal locomotion on gradients: Walking, running or cycling?;Ardigo;European Applied Physiology,2003
2. A geometric and dynamic affordance model of reaches-to-grasp: Men take greater risks than women;Bingham;Journal of Experimental Psychology: Human Perception and Performance,2014
3. Psychophysical bases of perceived exertion;Borg;Medicine & Science in Sports & Exercise,1982
4. Hierarchical linear models: Applications and data analysis methods;Bryk,1992
5. Perceiving what is reachable;Carello;Ecological Psychology,1989