Table 1.

Forced vital capacity (FVC) data

GroupsNMean eFVCMean sFVCMean e%FVCMean s%FVCMean e−sFVC % differenceMean e−s%FVC % difference
* p < 0.05.
e = erect; s = supine; % = percent predicted; HA = headache; EDS = excessive daytime sleepiness.
Control154.13.8101957*6.2*
ALS473.12.7816915.1*15.6*
Morning HA32.952.5386.373.315.615.6
Bulbar232.632.1875.262.817.417
Snoring43.393.328075.84.85.1
Orthopnea172.952.3775.860.921.7*21.4*
Dyspnea192.63*2.1073.5*59.820.2*19.6
EDS102.532.1269.458.716.115.8
Daytime fatigue112.591.9366.65027.3*26.3*