Here's alittle more of the same artical on EIC..:
What did you learn about EIC?
Dr. Taylor: Based on our results, we were able to describe the affected dogs (age, sex, color, body type, temperament) as well as predict the types of activity most likely to bring on collapse. We have also been able to describe the episodes of collapse, physical findings during the collapse, and typical recovery, which will enable dog owners, dog trainers and veterinarians in the field to recognize the syndrome.

We confirmed that dogs with EIC are normal at rest, with no apparent differences in physical parameters or routine laboratory test results from the control dogs. We were also able to describe the collapse episodes in great detail based on our personal experiences of evaluating the affected dogs during exercise and collapse. Our thorough evaluations of affected dogs has also allowed us to eliminate all of the medical disorders commonly credited with causing collapse in these dogs. Our specialized metabolic evaluations have documented mild alterations in energy metabolism in the muscles and nervous system of Labrador retrievers with EIC, but the precise metabolic reason for the collapse has not yet been determined.
We also determined that EIC in Labrador retrievers is an inherited disease that is most likely autosomal recessive. We now are using the DNA of more than 140 affected dogs and their relatives to try to identify the chromosomal location of the genetic mutation responsible for EIC. Once the genetic defect is identified, a non-invasive DNA testing will be able to identify dogs that carry this gene as well as dogs that are affected before they start to show clinical signs.
What are the symptoms of EIC?
Dr. Taylor: Dogs with EIC are normal at rest and are usually described as being extremely fit, prime athletic specimens of their breed. These dogs can tolerate mild or steady exercise, but five to 20 minutes of strenuous exercise, especially together with a high level of excitement or stress, induces weakness and incoordination and then collapse. Weakness will usually be noted in the hind legs first, causing dogs to drag their hind legs as they run. In some dogs the weakness will progress to involve all four limbs. These dogs may actually collapse and appear unable to move their limbs or raise their head. Dogs are usually mentally normal during their collapse, but a few dogs appear disoriented and may exhibit a loss of balance. Most dogs with EIC return to normal after 10 to 20 minutes of rest, but a few affected dogs have died during episodes of collapse.