Differences in Body Composition in Older People from Two Regions of Mexico: Implications for Diagnoses of Sarcopenia and Sarcopenic Obesity

Table 2

Association of potential and independent predictors of ASM and their respective indices in older people by gender and region.

Dependent variables	Univariate association of potential predictors (p ≤ 0.2)	Independent predictors (p ≤ 0.05)
ASM/region
Northwest	BFMI, truncal fat, total body mass by DXA, height, grip strength, TBMC, RMR, TEE, age, waist and hip circumference, family income, gender, employment status, hypothyroidism, osteoporosis, digestive problems, smoking, and alcohol	TEE, Truncal fat, Total body mass by DXA, Height, BFMI, Hypothyroidism, and RMR
Center	BFMI, truncal fat, total body mass by DXA, height, grip strength, TBMC, RMT, and TEE, gender, educational level, digestive problems, and alcohol	Truncal fat, BFMI, RMR, TBMC, and Grip strength
ASM/gender and region
Men/northwest	BFM, truncal fat, total body mass by DXA, height, grip strength, TBMC, RMR, TEE, age, waist and hip circumference, educational level, and employment status	Total body mass by DXA, Height, and BFM
Men/center	TBF, FFM, truncal fat, total body mass by DXA, height, grip strength, TBMC, RMR, TEE, age, waist and hip circumference, and educational level	FFM, Height, Waist circumference, TBMC, and Age
Women/northwest	BFM, truncal fat, total body mass by DXA, height, grip strength, TBMC, RMR, TEE, age, waist and hip circumference, hypertension, hypothyroidism, osteoporosis, and digestive problems	Total body mass by DXA, BFM, Truncal fat, and hypothyroidism
Women/center	TBF, FFM, truncal fat, total body mass by DXA, grip strength, TBMC, RMR, TEE, age, and waist and hip circumference	FFM
ASMI/region
Northwest	BFM, truncal fat, total body mass by DXA, height, grip strength, TBMC, RMR, TEE, waist and hip circumference, gender, employment status, hypertension, osteoporosis, digestive problems, smoking, and alcohol	TEE, Truncal Fat, Height, Total body mass by DXA, and BFM
Center	BFM, total body mass by DXA, height, grip strength, TBMC, RMR, TEE, waist and hip circumference, gender, and digestive problems	TEE, BFM, Height, Gender, Waist and hip circumference, and TBMC, and Grip strength
ASMI/gender and region
Men/northwest	BFM, FFM, total body mass by DXA, height, grip strength, TBMC, RMR, TEE, age, waist and hip circumference, and educational level	FFM, Height, TEE
Men/center	FFM, total body mass by DXA, grip strength, TBMC, RMR, TEE, age, and hip circumference	FFM, Total body mass by DXA, and Waist circumference
Women/northwest	BFM, FFM, truncal fat, total body mass by DXA, TBMC, RMR, TEE, waist and hip circumference, educational level, employment status, hypertension, hypothyroidism, osteoporosis, and digestive problems	FFM, Waist circumference, Hypertension, TBMC, Hypothyroidism, and Osteoporosis
Women/center	BFM, FFM, truncal fat, total body mass by DXA, grip strength, TBMC, RMR, TEE, waist and hip circumference	FFM, TBMC, and Waist circumference

ASM: appendicular skeletal muscle mass; ASMI: appendicular skeletal muscle mass index; BFMI: body fat mass index; TBMC: total bone mineral content; RMR: rest metabolic rate; TEE: total expenditure energy; total body mass by DXA: total mass derived by dual energy X-ray absorptiometry; FFM: fat-free mass.