Table 6.

Amplitude-only or Area-only decrements versus Concordant Amplitude-and-Area decrements on the Short Exercise Tests at room temperature, after cooling, and after rewarming.

A. Decrements of >10%
	Amplitude decrement >10% N (%)	Area decrement >10% N (%)	CAA decrement >10% N (%)
Asymptomatic Normal Controls (n=32)	10 (31)	13 (41)	4 (13)
Combined Asymptomatic and out-patient control group (n=65)	20 (31)	34 (52)	9 (14)
Sodium Channel myotonia (n=11)	2 (18)	6 (54)	1 (10)

B. Decrements of >20%
	Amplitude decrement >20% N (%)	Area decrement >20% N (%)	CAA decrement >20% N (%)
Asymptomatic Normal Controls (n=32)	6(19)	5 (17)	0
Combined Asymptomatic and out-patient control group (n=65)	8 (12)	10 (15)	0
Sodium Channel myotonia (n=11)	1 (10)	1 (10)	0

CAA decrement: Concordant amplitude-and-area decrement