Table 2 Correlation coefficients of energy and nutrient intakes from dietary records and food frequency questionnaire for Japanese athletes. (n = 78)

Energy

(kcal)

2560

(2074, 2962)

2502

(2073, 3391)

0.523 (0.324–0.678)

–

0.466 (0.273–0.623)

Protein

(g)

91.1

(72.9, 102.5)

94.5

(73.1, 117.0)

0.445 (0.234–0.616)

0.314 (0.090–0.508)

0.393 (0.188–0.565)

Fat

(g)

80.8

(65.1, 98.2)

73.6

(58.4, 89.3)

0.344 (0.122–0.533)

0.270 (0.043–0.470)

0.338 (0.126–0.521)

Carbohydrate

(g)

347.9

(273.0, 400.4)

374.0

(308.6, 510.9)

0.550 (0.356–0.699)

0.353 (0.132–0.541)

0.470 (0.278–0.626)

Calcium

(mg)

509

(415, 670)

573

(432, 803)

0.379 (0.160–0.562)

0.584 (0.397–0.724)

0.367 (0.207–0.578)

Iron (Fe)

(mg)

8.2

(6.8, 9.9)

8.2

(6.2, 10.4)

0.436 (0.223–0.609)

0.491 (0.397–0.724)

0.409 (0.207–0.578)

Retinol

(ηgRAE)

511

(397, 733)

586

(410, 1094)

0.407 (0.191–0.585)

0.515 (0.286–0.653)

0.351 (0.140–0.531)

Vitamin B₁

(mg)

1.28

(1.02, 1.58)

1.29

(0.99, 1.77)

0.399 (0.182–0.579)

0.293 (0.286–0.653)

0.369 (0.161–0.546)

Vitamin B₂

(mg)

1.34

(1.08, 1.60)

1.53

(1.10, 1.89)

0.473 (0.266–0.639)

0.574 (0.314–0.672)

0.433 (0.234–0.597)

Vitamin C

(mg)

109

(77, 154)

126

(71, 170)

0.273 (0.046–0.473)

0.464 (0.067–0.490)

0.256 (0.036–0.451)

Dietary fiber

(g)

13.6

(11.9, 16.7)

13.4

(10.6, 16.6)

0.222 (−0.006–0.428)

0.500 (0.385–0.717)

0.213 (−0.009–0.415)