Evolution of motor activity in osteoarthritic dogs fed subsequentially with control and green-lipped mussel-enriched diets. Motor activity (MA) is represented as box plot (median and 25th to 75th percentile) per two consecutive weeks (periods P(i)) for n = 7 dogs. General linear mixed model for repeated measures: asignificant difference of Least Squares Means when compared with P1. Significance was reached at P-value lower than 0.003 with Bonferroni’s adjustment. As descriptive statistics, MA was presented by age category, and represented as median (25th to 75th percentile) for dogs under 6-y (black circle and short dashed lines) and dogs older than 6-y (black triangle and long dashed line).