Music and Metronomes Differentially Impact Motor Timing in People with and without Parkinson’s Disease: Effects of Slow, Medium, and Fast Tempi on Entrainment and Synchronization Performances in Finger Tapping, Toe Tapping, and Stepping on the Spot Tasks

Table 6

IRI coefficient of variation for slow, medium, and fast tempi by movement modality.

Tempo	Cue type	Mean (ms)	Std. error (ms)	95% confidence interval
				Lower bound	Upper bound
Slow	Metronome	36.24	1.72	32.82	39.67
	Music	35.71	1.34	33.04	38.38
Medium	Metronome	25.27	0.89	23.50	27.04
	Music	27.47	1.11	25.25	29.69
Fast	Metronome	20.94	0.70	19.54	22.35
	Music	22.38	0.69	21.00	23.76
	Modality
Slow	Finger tapping	38.87	1.52	35.83	41.91
	Toe tapping	42.97	2.04	38.89	47.04
	Stepping on the spot	26.10	1.77	22.56	29.63
Medium	Finger tapping	30.03	0.97	28.08	31.98
	Toe tapping	31.77	1.27	29.24	34.30
	Stepping on the spot	17.32	1.40	14.53	20.11
Fast	Finger tapping	25.31	0.85	23.61	27.02
	Toe tapping	26.75	0.94	24.86	28.63
	Stepping on the spot	12.93	0.75	11.43	14.43