TABLE 2.

Results of modeling correlated muscle activity across tasks and muscle groups.

Test	Comparing	df	χ2
Homologous muscles	across tasks	2	22.99
Ipsilateral synergists	across tasks	2	27.93
Contralateral synergists	across tasks	2	10.35
Ipsilateral antagonists	across tasks	2	31.97
Contralateral antagonists	across tasks	2	19.67
Chewing	across muscle groups	4	165.86
Voluntary oscillation	across muscle groups	4	94.47
Speech	across muscle groups	4	18.76

Note. All results were significant at p < .001.