Intakes of Calcium and Other Nutrients Related to Bone Health in Japanese Female College Students: A Study Using the Duplicate Portion Sampling Method

Abstract

The purposes of this study were to determine intakes of nutrients related to bone health, such as calcium (Ca), phosphorus (P), sodium (Na), potassium (K), and protein, in Japanese female college students, using the duplicate portion sampling method, and to identify possible lifestyle factors explaining their calcium intakes. Subjects were 106 Japanese female college students aged 19-23 years. All foods in the duplicate portions, as eaten by the subjects during a three-weekday period, were collected. The minerals and protein in the food samples were analyzed. Life-style information was obtained by interview. Levels of cognitive eating restraint (CER) were assessed by the Three-Factor Eating Inventory. Average intakes of dietary Ca, P, Na, K, and protein were 380 (SD 209) mg/day, 649 (SD 212) mg/day, 2,535 (SD 847) mg/day, 1,108 (SD 429) mg/day, and 41.7 (SD 12.6) g/day, respectively. Ca intake was significantly associated with the frequency of milk intake (R 2 = 0.278, p < 0.001), intake of other dairy products (R 2 = 0.338, p < 0.001), and meal skipping (R 2 = 0.161, p < 0.001), but not with CER score (p = 0.378). Female college students are at high risk for poor Ca nutrition. Low intake of nutrients relevant to bone health is considered to adversely affect bone metabolism in young women. bone health; dietary calcium; duplication sampling method; female college student; minerals © 2005 Tohoku University Medical Press Calcium (Ca) is an essential nutrient for bone metabolism, and insufficient intake may result in weak bones, especially for women who have a greater risk of osteoporosis later in life. This point should be emphasized for young women who need to maximize their peak bone mass. Nonetheless, young Japanese women reportedly have lower Ca intakes than their older counter-

Development of a Food-Frequency Questionnaire to Measure the Dietary Calcium Intake of Adult Japanese Women

“…However, there is as yet no ideal biological measure of dietary calcium intake for use in epidemiological surveys. The chemical analysis of a homogenate of the duplicate meals consumed by each subject gives an accurate estimate for calcium intake (Ueno et al 2005), but is not feasible in large-scale epidemiological surveys. Several selfadministered diet assessment methods for Japanese people have been validated for various nutrients, including calcium (Sasaki et al 1998;Tsugane et al 2003), but they comprise more than 100 food items and require 40 to 60 min to complete.…”

Daily Intake of Green and Yellow Vegetables Is Effective for Maintaining Bone Mass in Young Women

“…It is assumed that the relationship measured by QUS, that is considered be better accepted for routine health check-ups, indicates the importance of underling food intake in health education to prevent osteoporosis. Several studies have reported on bone mass level and food intake among young women (Sawa et al 2001;Tomita et al 2004;Otsuki et al 2004;Ueno et al 2005;Prynne et al 2006), but the report of a positive relationship between bone mass level and the intake of green and yellow vegetables has been limited. Our result is in line with Otsuki's report demonstrating that intake of green and yellow vegetables showed a correlation with bone mineral density that was measured by DXA at the lumbar spine in young adults (Otsuki et al 2004).…”

Kontribusi Produk Susu Terhadap Asupan Kalsium Pada Mahasiswi

“…Peak bone mass yang rendah menyebabkan masalah osteoporosis sehingga tulang mudah patah (Ford, 2007). Kejadian osteoporosis dan patah tulang lebih banyak dialami oleh perempuan terutama bila telah menopause (Ueno, 2005). Salah satu mineral penting yang dibutuhkan untuk proses pembentukan masa tulang adalah J.Gipas, Mei 2019, Volume 3 Nomor 1 ISSN 2599-0152 eISSN 2599-2465 http://jos.unsoed.ac.id/index.php/jgps kalsium (Lesli, 1999).…”

“…Salah satu mineral penting yang dibutuhkan untuk proses pembentukan masa tulang adalah J.Gipas, Mei 2019, Volume 3 Nomor 1 ISSN 2599-0152 eISSN 2599-2465 http://jos.unsoed.ac.id/index.php/jgps kalsium (Lesli, 1999). Sumber kalsium yang baik dengan avalailabilitas tinggi adalah produk susu seperti keju, mntega, dan yogurt (Lesli, 1999;Drewnowski, 2015 (Rose, 2018;Vatanparast, 2006;Ueno, 2005…”

“…/jos.unsoed.ac.id/index.php/jgps /jos.unsoed.ac.id/index.php/jgps orang Asia(Ueno, 2005). Hasil survey berbasis internet pada 1.730 mahasiswa /jos.unsoed.ac.id/index.php/jgps…”