Evaluation of dietary energy intake and physical activity in dogs undergoing a controlled weight-loss program.
OBJECTIVE
To quantify physical activity and dietary energy intake in dogs enrolled in a controlled weight-loss program and assess relationships between energy intake and physical activity, sex, age, body weight, and body condition score (BCS).


METHODS
Prospective clinical study.


METHODS
35 client-owned obese dogs (BCS > 7/9).


METHODS
Dogs were fed a therapeutic diet with energy intake restrictions to maintain weight loss of approximately 2%/wk. Collar-mounted pedometers were used to record the number of steps taken daily as a measure of activity. Body weight and BCS were assessed at the beginning of the weight-loss program and every 2 weeks thereafter throughout the study. Relationships between energy intake and sex, age, activity, BCS, and body weight at the end of the study were assessed via multivariable linear regression. Variables were compared among dogs stratified post hoc into inactive and active groups on the basis of mean number of steps taken (< or > 7,250 steps/d, respectively).


RESULTS
Mean ± SD daily energy intake per unit of metabolic body weight (kg(0.75)) of active dogs was significantly greater than that of inactive dogs (53.6 ± 15.2 kcal/kg(0.75) vs 42.2 ± 9.7 kcal/kg(0.75), respectively) while maintaining weight-loss goals. In regression analysis, only the number of steps per day was significantly associated with energy intake.


CONCLUSIONS
Increased physical activity was associated with higher energy intake while maintaining weight-loss goals. Each 1,000-step interval was associated with a 1 kcal/kg(0.75) increase in energy intake.
Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA. jw37@cornell.edu
Joseph J
JJ
Wakshlag
Angela M
AM
Struble
Barbour S
BS
Warren
Mary
M
Maley
Matthew R
MR
Panasevich
Kevin J
KJ
Cummings
Grace M
GM
Long
Dorothy E
DE
Laflamme
D000818:Animals; D001823:Body Composition / Q000502:physiology; D004038:Diet, Reducing / Q000662:veterinary; D004283:Dog Diseases / Q000628:therapy*; D004285:Dogs; D002149:Energy Intake / Q000502:physiology*; D005260:Female; D008297:Male; D009765:Obesity / Q000628:therapy / Q000662:veterinary*; D010805:Physical Conditioning, Animal; D011446:Prospective Studies; D016896:Treatment Outcome; D015431:Weight Loss