Table 1.

Selected Problems Impacting Health-Related Quality of Life in NMD (n = 1169)

How much difficulty do you have performing the following functions?	Moderate or Severe	Slight	Not a problem
Difficulty with muscle weakness.	72.4%	11.6%	6.0%
Difficulty getting exercise.	66.1%	17.5%	16.3%
Difficulty with fatigue.	70.8%	21.7%	7.6%
Difficulty controlling weight.	36.0%	27.9%	36.2%
Difficulty with sleeping.	36.2%	28.6%	35.1%
Difficulty with muscle contractures.	33.6%	29.9%	36.6%

How much does your health limit you in the following activities?	A lot	A little	Not at all
Vigorous activities such as running?	93%	3%	4%
Walking more than a mile?	84%	9%	7%
Walking several blocks?	73%	17%	10%
Walking one block?	54%	27%	18%