Assessing the adequacy of essential nutrient intake in obese dogs undergoing energy restriction for weight loss: a cohort study

Table 6 Simple and multiple linear regression analysis to determine factors associated with change in lean mass

Variable	R	R²	Probability
Simple regression
Age^a	−0.27	0.07	0.170
Sex	0.09	0.01	0.658
Neuter status	−0.14	0.02	0.471
Duration of weight loss	0.057	0.00	0.781
Percentage weight loss	−0.55	0.30	0.003
Mean EI during weight loss^b	0.28	0.08	0.152
Mean rate of weight loss^c	−0.33	0.11	0.092
Starting percentage body fat	−0.28	0.08	0.152
Change in fat mass^d	0.11	0.01	0.605
Mean daily intake < RDA^e
Methionine & Cysteine	−0.32	0.10	0.107
Tryptophan	−0.21	0.05	0.282
Choline	−0.13	0.02	0.514
Minimum daily intake < RDA^f
Methionine & Cysteine	−0.21	0.05	0.282
Tryptophan	0.05	0.00	0.790
Choline	−0.31	0.10	0.111
Final multiple regression model
Percentage weight loss	−0.55	0.30	0.003

All data are expressed as median (range). EI: energy intake; RDA: recommended daily allowance
^aAge at the start of the weight loss programme
^bMean energy intake expressed as metabolisable energy (in kJ [Kcal]) per kg of metabolic body weight (BW^0.75) per day
^cMean rate of weight loss expressed as percentage of starting body weight per week
^dPercentage change in fat mass between the start and end of the weight loss period
^eDummy variable created whereby 1 = the mean daily intake of each nutrient less than the NRC 2006 RA, and 0 when it was greater [15]
^fDummy variable created whereby 1 was assigned when the minimum daily intake of the nutrient less than the NRC 2006 RA, and 0 was assigned when it was greater [15]

ISSN: 1746-6148