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Titolo:
Calcium intake and bone mass development among Israeli adolescent girls
Autore:
Rozen, GS; Rennert, G; Rennert, HS; Diab, G; Daud, D; Ish-Shalom, S;
Indirizzi:
Rambam Med Ctr, Dept Diet & Nutr, IL-31096 Haifa, Israel Rambam Med Ctr Haifa Israel IL-31096 Diet & Nutr, IL-31096 Haifa, Israel Rambam Med Ctr, Dept Endocrinol, Metab Bone Dis Unit, IL-31096 Haifa, Israel Rambam Med Ctr Haifa Israel IL-31096 ne Dis Unit, IL-31096 Haifa, Israel Carmel Med Ctr, Dept Community Med & Epidemiol, Haifa, Israel Carmel Med Ctr Haifa Israel pt Community Med & Epidemiol, Haifa, Israel
Titolo Testata:
JOURNAL OF THE AMERICAN COLLEGE OF NUTRITION
fascicolo: 3, volume: 20, anno: 2001,
pagine: 219 - 224
SICI:
0731-5724(200106)20:3<219:CIABMD>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
FOOD FREQUENCY QUESTIONNAIRE; MINERAL DENSITY; DOUBLE-BLIND; FEMALES; OSTEOPOROSIS; SUPPLEMENTATION; ACQUISITION; CHILDREN; TRIAL; VALIDITY;
Keywords:
dietary calcium; double-blind method; bone development; bone density; adolescents; body weight; energy intake; Israeli; Arab;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Rozen, GS Rambam Med Ctr, Dept Clin Nutr, POB 9602, IL-31096 Haifa, IsraelRambam Med Ctr POB 9602 Haifa Israel IL-31096 096 Haifa, Israel
Citazione:
G.S. Rozen et al., "Calcium intake and bone mass development among Israeli adolescent girls", J AM COL N, 20(3), 2001, pp. 219-224

Abstract

Objective: To determine the possible relationship between food and life style habits and bone health in adolescent Israeli females. Methods: 2,000 adolescent Israeli Jewish and Arab high-school girls (mean age 14.5) completed a semi-quantitative food frequency questionnaire and a personal history questionnaire. 27 food components were calculated fur eachsubject. Bone mineral content and density were determined for 112 subjectswith calcium intake below 800 mg/day. Results: Average calcium intake was found to be 1,260 mg/day, but 20% of all girls had a calcium intake below 800 mg/day. All low-energy diets were very low in calcium, as mean calcium intake per 1,000 calories was 411 +/- 128 grams. A large percentage of diets with less than 800 mg calcium were also deficient in phosphorus (95.2%), magnesium (84.8%), iron (90.5%) and zinc (100%). Due to differences in food sources, Jewish girls had more phosphorus in their diet, but less magnesium and iron compared to Arab girls. Calcium and zinc deficiencies in Jewish and Arab diets were similar. A negativecorrelation was found between body mass index (BMI) and age at menarche for all girls in the study. Bone mineral density (BMD) measured for girls with calcium intake below 800 mg/day distributed normally around the average when compared to age matched controls despite their low calcium intake. There was a strong positive correlation between BMD and bone mineral content (BMC) at all sites and body weights. Conclusions: Low calcium intake, other nutritional deficiencies and delayed menarche due to low-energy diet in the growing period and in adolescence may prevent the formation of healthy bones. There is no evidence of lower bone mass among the low calcium intake group in the study population at thisstage. It remains to be documented if the window of opportunity for optimal bone accretion for this group will be missed in the future, possibly lending to increased risk of osteoporosis.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 08:21:08