cap_10b

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Identity No.	Subject (kg)	Weight (cm)	Height (%)	W/H index kcal/day	Energy Intake kcal/kg/day	(delta) Weight (kg)
44	54.1	168.5	82.7	3,200	59.1	0.2
45	55.8	164.6	86.0	3,200	57.3	- 0.3
46	62.7	164.0	98.7	3,200	51.0	0.1
48	57.8	166.7	89.5	3,200	55.4	0.6
49	64.0	161.7	103.7	3,200	50.0	0.1
51	61.0	161.0	99.8	3,200	52.5	- 0.8
52	68.4	173.8	98.6	3,200	46.8	- 0.2
53	64.5	174.5	92.5	3,200	49.6	- 0.2
54	67.0	169.5	101.2	3,200	47.8	- 0.2
55	64.8	170.5	96.9	3,200	49.4	- 0.5
56	56.7	164.0	90.1	3,200	56.4	- 0.1
57	51.8	161.8	83.9	3,200	61.8	0.8
58	55.8	160.0	92.2	3,200	57.3	0
59	73.2	180.8	97.6	3,200	47.8	- 1.5
60	63.7	168.6	96.7	3,200	50.2	0.5
Mean	62.4	166.1	96.7	3,231	52.4	- 0.13
SD	6.7	6.5	7.1	89	5.0	0.73

Anthropometric measurements such as body weight, height, waist, gluteal and mid-upper arm circumference, triceps fat-fold and subscapular fat-fold, thorax circumference and cranial circumference were obtained on days 1 and 11.

Summary of Main Results

Energy intake

The subjects received a mean daily energy intake of 3,247 ± 104 kcal/day, or 52 ± 5 kcal/kg/day.

Weight change Negligible, non-significant mean body weight changes were observed. About half of the individuals gained weight and the rest lost it, with an overall mean equal to - 0.128 ± 0.729.

Urinary nitrogen intake: The mean urinary nitrogen excretion computed for the last five days was 143.5 ± 14 mg/kg/day.

TABLE 2 Mean Daily Nitrogen Balances Resulting from a Chilean Mixed Diet Consumed for 10 Daysa

Subject Identity No	N Intake	Urinary N	Faecal N	N Balance
Subject Identity No	mg N/kg/day
1	183	139.3	35.7	+ 3.0
2	183	165.9	19.4	- 73
3	183	156.7	31.5	- 10.2
4	183	136.2	36.9	+ 4 9
5	182	144.0	25.0	+ 8.0
6	183	136.6	33.2	+ 8.2
7	183	156.2	28.1	- 6.3
8	183	135.0	37.6	+ 54
9	182	123.6	44.1	+ 9 3
10	182	118.7	22.7	+ 35.6
11	183	126.4	34.2	+ 174
12	183	141.2	44.3	- 75
13	183	158.8	16.7	+ 2.5
14	182	141.0	29.4	+ 6.6
15	183	142.6	28.0	+ 74
16	183	152.0	36.7	- 10.7
17	183	156.1	37.6	- 15.6
18	182	159.3	30.5	- 12 8
19	185	159.6	34.5	- 14.1
20	183	164.9	27.9	- 1.6
21	183	137.4	35.4	+ 5.2
22	182	142.5	35.1	- 0.6
24	187	149.6	23.7	+ 8.7
25	183	125.4	35.0	+ 17.6
26	182	135.6	30.4	+ 110
27	182	158.7	31.9	- 13.6
28	182	129.0	34.8	+ 13.2
29	182	124.2	27.3	+ 25.5
30	182	147.8	28.4	+ 0.8
31	182	146.0	30.3	+ 07
33	183	133.8	21.6	+ 22.6
35	182	159.5	20.3	- 2.8
36	183	133.6	23.5	+ 20.9
37	183	155.1	24.3	- 1.4
38	182	153.7	23.1	+ 0.2
39	182	158.4	29 2	+ 10.6
42	183	141.4	20.6	+ 16.0

TABLE 2. (continued)

Subject Identity No	N Intake	Urinary N	Faecal N	N Balance
Subject Identity No	mg N/kg/day
43	183	149.6	30.3	- 1.9
44	183	153.3	22.6	+ 2.1
45	183	142.7	20.3	+ 15.0
46	183	155.8	19.2	+ 3.0
48	183	154.7	26.7	+ 3.4
49	183	114.2	36.0	+ 27.8
51	183	129.2	25.5	+ 23.3
52	183	147.8	24.5	+ 5.7
53	183	127.0	46.5	+ 4.5
54	183	168.4	50.3	- 10.7
55	183	144.4	25.1	+ 8.5
56	182	119.4	41.8	+ 15.8
57	183	113.4	37.2	+ 27.4
58	183	132.5	30.1	+ 15.4
59	183	160.0	16.2	+ 1.8
60	183	146.1	21.9	+ 10.0
Mean	183	143.5	29.3	+ 5.8
SD		14.1	7.3	11.7

Faecal nitrogen The faecal N excretion was 29.3 ± 7.3 mg/kg/day. It is important to point out that this value is of the same magnitude found in our previous experiments in which male subjects consumed the same mixed diet in short-term and long-term experiments.

Nitrogen balance: The mean nitrogen balance for the population studied was + 5.8 ± 11.7 mg N/kg/day (table 4).

Biochemical values in blood: All the parameters studied at the onset of the study fell within the normal range of values for young adult male subjects.

Anthropometric measurements: The anthropometric measurements made on days 1 and 11 failed to reveal significant changes in the parameters studied.

TABLE 3. Biochemical Measurements

Subject Identity No	Total Protein (g/dl)	Albumin (g/dl)	Globulin (g/dl)	A/G Index	Haematocrit (%)	Haemoglobin (g/dl)
1	7.7	4.8	2.9	1.6	49.3	16.9
2	6.3	4.0	2.3	1.7	43.0	14.3
3	7.3	5.0	5.5	1.9	44.5	15.3
4	6.3	4.2	2.1	2.0	45.2	15.3
5	7.0	5.2	1.8	2.8	46.9	16.1
6	6.3	4.0	2.2	1.8	42.8	14.5
7	6.9	5.1	1.8	2.8	46.7	16.1
8	6.1	4.4	1.7	2.5	46.8	16.5
9	6.7	4.4	2.3	1.9	44.8	15.5
10	7.3	4.9	2.4	2.1	44.1	15.4
11	7.1	4.5	2.6	1.8	45.0	15.6
12	7.1	4.9	2.2	2.3	39.1	13.6
13	6.5	4.1	2.3	1.8	46.5	16.0
14	6.3	3.9	2.4	1.7	43.6	15.0
15	6.7	4.5	2.2	2.0	48.1	16.4
16	7.0	4.7	2.3	2.1	45.4	16.1
17	6.7	4.7	2.0	2.3	45.7	15.7
18	7.7	5.2	2.5	2.1	44.4	15.4
19	6.8	4.4	2.8	1.8	45.8	15.9
20	6.7	3.4	2.2	1.1	46.7	16.1
21	6.9	4.2	2.7	1.5	43.3	14.4
22	6.3	4.4	1.9	2.3	46.8	15.3
24	6.5	4.1	2.4	1.7	49.6	16.6
25	7.0	4.2	2.8	1.5	43.1	14.9
26	7.0	4.7	2.4	2.0	47.7	16.2
27	7.1	5.0	2.1	2.5	47.0	16.4
28	6.0	4.4	1.6	2.7	49.1	16.8
29	6.5	4.7	1.7	2.8	46.5	16.0
30	6.5	4.1	2.4	1.7	44.5	15.2
33	7.6	4.7	2.9	1.6	45.4	15.3
35	7.8	4.6	3.2	1.4	45.6	14.9
36	7.0	4.6	2.4	1.9	42.2	13.5
37	7.0	4.4	2.5	1.8	45.0	15.5
38	7.0	4.6	2.4	1.9	43.8	14.7
39	7.6	4.6	3.0	1.5	43.4	15.0
42	6.2	3.9	2.3	1.7	41.8	14.1
43	7.0	4.9	2.1	2.3	46.2	16.3
44	6.2	4.4	1.8	2.4	39.6	13.3
45	6.4	3.9	2.4	1.6	42.2	14.1

TABLE 3. (continued)

Subject identity No	Total a Protein (g/dl)	Albumin (g/dl)	Globulin (g/dl)	A/G Index	Haematocrit (%)	Haemoglobin (g/dl)
46	6.7	4.6	2.0	2.3	38.1	1 3.0
48	7.0	4.1	2.9	1.4	47.8	1 6.5
49	6.8	3.4	3.4	1.0	—	—
51	7.0	4. 1	2.9	1 .4	47.2	15.8
52	7.3	4.1	3.2	1.3	43.6	14.9
53	6.8	3.7	3.1	1.2	44.4	14.7
54	7.2	3.3	3.9	0.8	—	—
55	6.2	4.4	1 .8	2.4	39.8	1 3.4
56	6.8	3.3	3.5	0.9	43.4	14.4
57	7.4	4.0	3.4	1 .2	43.8	1 5.7
58	6.8	3.5	3.2	1.1	46.2	16.5
59	7.4	3.9	3.5	1.1	—	—
60	7.6	4. 1	3.5	1 .2	41 .6	1 4.7
Mean	6.8	4.3	2.6	2.0	44.7	1 5.3
SD	0.5	0.5	0.7	1.5	2.6	1 0

TABLE 4. Distribution of Nitrogen Balance

N Balance (mg/kg)	No.	%	Cumulative
			No.	%
>= + 10.0	17	32.1	17	32.1
+ 5.0 to 9.9	10	18.9	27	50.9
0.0 to 4.9	11	20.7	38	71.7
- 5.0 to - 0.1	5	9.4	43	81.1
- 10.0 to - 5.1	3	5.7	46	86.8
< - 10.0	7	13.2	53	100.0

Conclusions and Comments

Mean daily N balance was slightly positive for the group, but seven of 53 individuals mantained on 1.1 9 of protein per kg were in significant negative N balance (lower than - 10 mg N/kg/day).

Subjects with the largest positive N balance corresponded to those with highest energy intakes.

The faecal N excretion level was comparable to that in our previous data using similar diets and subjects.

Subjects appeared to be in energy balance based on weight and anthropometric measurements.

A predominantly vegetable protein diet fed at 1.1 g/kg body weight is sufficient to cover the needs of most subjects in the group studied.

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