Fig. 4

Mean subjective symptom values at baseline, after typing, and after intervention in each condition. a Muscle stiffness. b Muscle fatigue. H3C1, alternating stimulation with 3 min of heat and 1 min of cooling. H3C2, alternating stimulation with 3 min of heat and 2 min of cooling. H3C3, alternating stimulation with 3 min of heat and 3 min of cooling. NO, no stimulation. * There was a main effect of time point (p < 0.01) and a significant difference between baseline and after typing, and after typing and after intervention, in multiple comparisons (p < 0.01). †: There was a significant interaction effect between time point and condition (p < 0.01) and a significant difference between the H3C1 and NO conditions after the intervention (p < 0.01)