Fig. 4.

Total range of motion (ROM) in degrees (°) of hip (a), knee (b), and ankle (c) joints during contact phase of running at four conditions: free and Nordic running in regular terrain (FR and NR), and free and Nordic running in irregular terrain (FI and NI). The bars represent the mean and standard deviation values. The dots are the individual values of each subject. The statistically significant effects for terrain and the interaction of mode of running*terrain are indicated by asterisk. If the interaction was significant: the ^# symbol represents difference between mode of running for the same terrain, and the ^$ symbol represents difference between terrain for the same mode of running