Table 5.

Individual Mean Protein Requirement

Subject	Week 2 (g of protein·kg−1·d−1)	R2 Value	Week 3 (g of protein·kg−1·d−1)	R2 Value
1	0.86	.992	0.65	.854
2	0.75	.997	0.65	.857
3	0.66	.957	0.42	.950
4	0.72	.994	0.57	.964
5	0.62	.999	0.55	.548
6	0.55	.999	0.47	.999
7	0.81	.927	0.64	.763
8	0.80	.970	0.66	NA†
9	0.71	.782	0.40	.570
10	0.60	.886	0.51	.998
11	0.66	.999	0.66	.962
Mean	0.70‡		0.56§
SD	0.10		0.10
SEM	0.03		0.03
CV	13.5		17.7
Protein allowance∥	0.90		0.76

Notes: R² values indicate the proportion of total variability of the nitrogen balance that can be accounted for by the dietary protein intake. CV = coefficient of variation.

^†Subject 8 did not collect samples for nitrogen balance during Week 3 of Trial 2; thus, no R² value could be calculated.

^‡Different than the assumed mean protein requirement of 0.6 g of protein·kg⁻¹·d⁻¹ (1) at Week 2 (p < .005).

^§Different from the value calculated at Week 2 (p < .0004).

^∥Calculated as 2 SDs above the mean.