Objective—To determine the association between
high-speed exercise and risk of injury while racing
among Thoroughbreds in Kentucky.
Design—Matched case-control study.
Animals—206 Thoroughbreds that sustained a musculoskeletal
injury while racing and 412
Thoroughbreds that were not injured during the same
Procedure—Data regarding official timed workouts
and races and the Beyer's numbers for the 3 races
before the race during which injury occurred were
extracted from past performance charts and compared
between injured horses and control horses.
Results—For injured horses, cumulative distance of
high-speed exercise during the 1- and 2-month periods
prior to the race in which injury occurred was significantly
less than that of control horses; for either
period, a difference of 10 furlongs was associated
with approximately 2-fold greater risk of injury.
Beyer's numbers were significantly higher for injured
horses than for control horses. These effects
remained significant after adjusting for age and
results of prerace physical inspection.
Conclusions and Clinical Relevance—In Kentucky,
injured horses had significantly less cumulative highspeed
exercise than did control horses during the 1-
and 2-month periods prior to the race in which injury
occurred. These results differ from those observed in
California. The association of injury with cumulative
high-speed exercise appears to vary among regions in
the United States. (J Am Vet Med Assoc 2000;
Objective—To determine the items (question topics) for a subjective instrument to assess degenerative joint disease (DJD)–associated chronic pain in cats and determine the instrument design most appropriate for use by cat owners.
Animals—100 randomly selected client-owned cats from 6 months to 20 years old.
Procedures—Cats were evaluated to determine degree of radiographic DJD and signs of pain throughout the skeletal system. Two groups were identified: high DJD pain and low DJD pain. Owner-answered questions about activity and signs of pain were compared between the 2 groups to define items relating to chronic DJD pain. Interviews with 45 cat owners were performed to generate items. Fifty-three cat owners who had not been involved in any other part of the study, 19 veterinarians, and 2 statisticians assessed 6 preliminary instrument designs.
Results—22 cats were selected for each group; 19 important items were identified, resulting in 12 potential items for the instrument; and 3 additional items were identified from owner interviews. Owners and veterinarians selected a 5-point descriptive instrument design over 11-point or visual analogue scale formats.
Conclusions and Clinical Relevance—Behaviors relating to activity were substantially different between healthy cats and cats with signs of DJD-associated pain. Fifteen items were identified as being potentially useful, and the preferred instrument design was identified. This information could be used to construct an owner-based questionnaire to assess feline DJD-associated pain. Once validated, such a questionnaire would assist in evaluating potential analgesic treatments for these patients.