The association between dietary acid load and body composition in physical education students aged 18–25 years

Mansordehghan, Maryam; Daneshzad, Elnaz; Basirat, Vahid; Gargari, Bahram Pourghassem; Rouzitalab, Tohid

doi:10.1186/s41043-022-00340-8

Journal of Health, Population and Nutrition

Table 3 Anthropometric indices among tertiles of dietary acid load

From: The association between dietary acid load and body composition in physical education students aged 18–25 years

Variables	Total	Tertiles of NEAP			P value^*	Tertiles of PRAL			P value^*
		1	2	3		1	2	3
		< 61.41	61.41–88.24	> 88.24		< 23.46	23.46–44.79	> 44.79
Number	207	69	69	69		69	69	69
Weight (kg)	64.05 ± 0.67
Crude model		63.08 ± 1.06	64.76 ± 1.18	64.31 ± 1.25	0.581	61.69 ± 0.91	65.69 ± 1.32	64.77 ± 1.19	0.581
Adjusted model		62.07 ± 1.18	64.16 ± 0.95	65.92 ± 1.10	0.121	61.65 ± 1.19	65.94 ± 0.95	64.56 ± 1.14	0.027
WC (cm)	75.54 ± 0.56
Crude model		75.50 ± 1.02	76.08 ± 0.89	75.02 ± 1.01	0.747	74.81 ± 0.83	76.31 ± 1.13	75.49 ± 0.94	0.747
Adjusted model		74.92 ± 1.05	75.61 ± 0.84	76.08 ± 0.98	0.784	75.43 ± 1.07	76.34 ± 0.84	74.84 ± 1.01	0.473
HC (cm)	93.93 ± 0.41
Crude model		92.84 ± 0.71	94.51 ± 0.73	94.42 ± 0.70	0.183	93.29 ± 0.70	94.79 ± 0.78	93.69 ± 0.66	0.183
Adjusted model		91.87 ± 0.89	94.62 ± 0.71	95.29 ± 0.82	0.037	93.28 ± 0.91	94.63 ± 0.72	93.87 ± 0.87	0.490
WHR	0.80 ± 0.004
Crude model		0.80 ± 0.008	0.80 ± 0.007	0.79 ± 0.007	0.347	0.79 ± 0.007	0.80 ± 0.009	0.80 ± 0.007	0.347
Adjusted model		0.81 ± 0.008	0.79 ± 0.006	0.79 ± 0.007	0.426	0.80 ± 0.008	0.80 ± 0.006	0.79 ± 0.008	0.575
WHtR	0.44 ± 0.002
Crude model		0.44 ± 0.005	0.44 ± 0.004	0.44 ± 0.005	0.863	0.44 ± 0.005	0.44 ± 0.004	0.44 ± 0.005	0.863
Adjusted model		0.43 ± 0.006	0.44 ± 0.005	0.44 ± 0.006	0.731	0.44 ± 0.007	0.44 ± 0.005	0.43 ± 0.006	0.659
BMI (kg/m²)	22.04 ± 0.17
Crude model		21.75 ± 0.28	22.16 ± 0.31	22.22 ± 0.31	0.485	21.75 ± 0.28	22.16 ± 0.31	22.22 ± 0.31	0.485
Adjusted model		21.26 ± 0.37	22.21 ± 0.30	22.66 ± 0.34	0.059	21.59 ± 0.38	22.40 ± 0.30	22.14 ± 0.36	0.269
Muscle Mass (kg)	28.76 ± 0.47
Crude model		28.45 ± 0.77	29.60 ± 0.81	28.23 ± 0.88	0.448	27.27 ± 0.74	29.12 ± 0.88	29.89 ± 0.81	0.448
Adjusted model		28.40 ± 0.58	28.98 ± 0.47	28.90 ± 0.54	0.770	27.68 ± 0.58	29.50 ± 0.46	29.10 ± 0.56	0.067
Fat Mass (kg)	20.28 ± 0.67
Crude model		19.91 ± 1.15	18.99 ± 1.14	21.94 ± 1.18	0.185	19.91 ± 1.15	18.99 ± 1.14	21.94 ± 1.18	0.185
Adjusted model		18.61 ± 0.97	19.85 ± 0.78	22.38 ± 0.90	0.031	12.11 ± 0.78	13.40 ± 0.62	12.78 ± 0.75	0.431
Fat Mass (%)	20.28 ± 0.67
Crude model		19.91 ± 1.15	18.99 ± 1.14	21.94 ± 1.18	0.185	21.22 ± 1.23	21.29 ± 1.22	18.33 ± 1.00	0.185
Adjusted model		18.61 ± 0.97	19.85 ± 0.78	22.38 ± 0.90	0.031	20.10 ± 1.00	20.63 ± 0.79	20.12 ± 0.95	0.872
TBW (kg)	37.59 ± 0.56
Crude model		37.19 ± 0.92	38.59 ± 0.96	36.99 ± 1.05	0.457	35.76 ± 0.88	38.06 ± 1.05	38.95 ± 0.97	0.457
Adjusted model		37.19 ± 0.69	37.82 ± 0.56	37.75 ± 0.64	0.799	36.29 ± 0.70	38.53 ± 0.55	37.95 ± 0.66	0.057
TBW (%)	58.43 ± 0.49
Crude model		58.69 ± 0.84	59.41 ± 0.84	57.19 ± 0.87	0.176	57.72 ± 0.90	57.70 ± 0.90	59.86 ± 0.74	0.176
Adjusted model		59.63 ± 0.71	58.78 ± 0.57	56.88 ± 0.66	0.030	58.53 ± 0.73	58.21 ± 0.58	58.55 ± 0.70	0.901
FFM (kg)	51.34 ± 0.76
Crude model		50.93 ± 1.24	52.61 ± 1.31	50.47 ± 1.43	0.491	48.99 ± 1.19	51.90 ± 1.44	53.12 ± 1.32	0.491
Adjusted model		50.93 ± 0.95	51.59 ± 0.76	51.49 ± 0.88	0.879	49.70 ± 0.96	52.52 ± 0.76	51.79 ± 0.91	0.087
FFM (%)	79.80 ± 0.66
Crude model		80.37 ± 1.11	80.99 ± 1.13	78.02 ± 1.18	0.158	79.06 ± 1.20	78.69 ± 1.22	81.64 ± 1.00	0.158
Adjusted model		81.44 ± 0.95	80.16 ± 0.76	77.58 ± 0.88	0.018	80.14 ± 0.99	79.36 ± 0.78	79.89 ± 0.94	0.792
BAI	0.55 ± 0.002
Crude model		0.54 ± 0.005	0.55 ± 0.005	0.55 ± 0.005	0.305	0.54 ± 0.005	0.55 ± 0.005	0.55 ± 0.005	0.305
Adjusted model		0.53 ± 0.006	0.55 ± 0.004	0.56 ± 0.005	0.025	0.55 ± 0.006	0.55 ± 0.005	0.55 ± 0.005	0.968

NEAP net endogenous acid production, PRAL potential renal acid load, WC waist circumference, HC hip circumference, BMI body mass index; TBW total body water; FFM fat-free mass, WHR waist-to-hip ratio, WHtR waist-to-hip ratio, BAI body adiposity index
^*Crude and adjusted model models are calculated by one-way ANOVA and ANCOVA tests, respectively. The adjusted model is adjusted for age, gender, physical activity, socioeconomic status, and energy, protein, and fat intakes
Data presented as mean ± standard error

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