Table 1.

Percentage of motor unit types in cat MG muscles reinnervated by > 50 % or < 50 % of their normal complement of motoneurones

	Type	S	FR	FI	FF	UC	n
> 50 % of MUs	Normal	25 ± 4.6	26 ± 4.0	8 ± 4.0	42 ± 4.0	–	5
	PD	13 ± 7.8	26 ± 11	15 ± 5.5	33 ± 5.7*	14 ± 6.6 *	4
	Crush	17 ± 4.5	8 ± 4.5 *	18 ± 7.4	39 ± 5.5	17 ± 0.8 *	3
	N-N	25 ± 11	7 ± 9.5 *	15 ± 11 *	34 ± 25	29 ± 24 *	3
	N-M	14 na	27 na	32 na	11 na	16na	1
< 50 % of MUs	Normal	25 ± 4.6	26 ± 4.0	8 ± 4.0	42 ± 4.0	–	5
	PD	23 ± 27	21 ± 14	17 ± 13	26 ± 13 *	11 ± 8.7 *	6
	Crush	18 ± 3.5	10 ± 14 *	14 ± 10	26 ± 17	37 ± 13 *	3
	N-N	17 ± 10	18 ± 12	37 ± 18 *	21 ± 6.0 *	8 ± 10 *	5
	N-M	14 ± 13	19 ± 14	26 ± 20 *	13 ± 13 *	28 ± 25 *	5

Means ± s.d.

^*Significantly different from normal at P < 0.05.

^naInsignificant number of samples to perform Student's two-tailed t test. UC, unclassifiable motor units. n, number of animals.