Effect of low-dose calcium supplements on bone loss in perimenopausal and postmenopausal Asian women: a randomized controlled trial.

Current standard-dose calcium supplements (eg, 1000 mg/d) may increase the risk for cardiovascular events. Effectiveness of lower-dose supplements in preventing bone loss should thus be considered. This study aimed to assess whether calcium supplements of 500 or 250 mg/d effectively prevent bone loss in perimenopausal and postmenopausal Japanese women.

Nutritional and biochemical parameters associated with 6-year change in bone mineral density in community-dwelling Japanese women aged 69 years and older: The Muramatsu Study.

Objective: Predictors of bone loss in elderly Asian women have been unclear. This cohort study aimed to assess lifestyle, nutritional, and biochemical predictors of bone loss in elderly Japanese women.

Methods: Subjects included 389 community-dwelling women aged 69 y and older from the Muramatsu cohort initiated in 2003; follow-up ended in 2009.

Bone fracture in physically disabled children attending schools for handicapped children in Japan.

Objective: Very few epidemiologic studies on bone fracture have been conducted in schools for handicapped children (Yogo schools). The aim of this study was to clarify the frequency and risk factors of bone fracture in physically disabled children in Japan.

Methods: We used a cross-sectional design to examine 525 physically disabled children in 38 Yogo schools in the Hokuriku-Koshinetsu District of Japan.

Low calcium intake is associated with increased bone resorption in postmenopausal Japanese women: Yokogoshi Study.

Objective: Low Ca intake is common among Japanese women, but its effect on bone metabolism has not been fully elucidated. The aim of the present study was to determine the relationship between Ca intake and serum markers of bone turnover in postmenopausal Japanese women.

Design: A cross-sectional study.

Vitamin D status, bone mass, and bone metabolism in home-dwelling postmenopausal Japanese women: Yokogoshi Study.

Little has been understood about vitamin D status in relation to bone health in Asian women. The purpose of this study was to identify how the serum 25-hydroxyvitamin D (25[OH]D) concentration is associated with bone mass and bone metabolism. This cross-sectional, community-based epidemiologic study was conducted among 600 ambulatory postmenopausal women.

Threshold value of serum 25-hydroxyvitamin D concentration in relation to elevated serum parathyroid hormone concentrations in elderly Japanese women.

This study was designed to determine the threshold value for 25-hydroxyvitamin D [25(OH)D] concentration in relation to elevated serum parathyroid hormone (PTH) concentrations in elderly Japanese women. The subjects were 582 noninstitutionalized, ambulant women who lived in a community in Japan. Serum 25(OH)D concentrations were determined using the Nichols Advantage chemiluminescent assay, and serum intact PTH concentrations were determined with a two-site immunoradiometric assay.

Weight gain in childhood and bone mass in female college students.

The attainment of maximal peak bone mass early on in life is one of the most important strategies for the prevention of osteoporosis in women. The aim of this study was to clarify the correlation between gains in body size in all growth phases in childhood and adult bone mass in women. The subjects were 86 female first-year university students, aged 18-21 years.

Dietary calcium, sodium, phosphorus, and protein and bone metabolism in elderly Japanese women: a pilot study using the duplicate portion sampling method.

Objectives: Associations between dietary factors and bone metabolism in Asians have not been thoroughly investigated. The purpose of this study was to determine the effect of dietary intake of calcium (Ca), phosphorus (P), sodium (Na), and protein on bone metabolism in elderly Japanese women by the duplicate portion sampling method.

Methods: The subjects were 43 healthy female volunteers (mean age, 68.

Nutritional covariates of dietary calcium in elderly Japanese women: results of a study using the duplicate portion sampling method.

Objectives: The purposes of this study were to determine the intake of nutrients related to bone health, including calcium (Ca), phosphorus (P), sodium (Na), potassium (K), protein, and vitamin D, in elderly Japanese women and to examine possible intercorrelations between Ca intake and other nutrients.

Methods: Fifty-three elderly women in a rural community in Japan participated by supplying duplicate meal samples of everything they ate during a 24-h period. Dietary Ca, P, Na, K, protein, and vitamin D intakes were examined.

Correlates of bone mineral density in elderly women living in nursing homes for the disabled in Japan.

Background And Aims: Characteristics of bone aging in the institutionalized elderly are not well known. The aim of this study was to determine the factors correlated with the forearm bone mineral density (BMD) in elderly women with disability.

Methods: Of 175 female residents living in nursing homes for the disabled in Niigata, Japan, 119 agreed to participate and underwent medical examinations in 1999; 107 (age range, 66-100) met our inclusion criteria.

Fish as a major source of vitamin D in the Japanese diet.

Objectives: We investigated the amount and sources of vitamin D in the Japanese diet by analyzing diet records collected over a 4-mo period.

Methods: Dietary data for this study were provided by a nursing home in Niigata, Japan. Diet records, written by the nursing home's dietitian, for 122 consecutive days between September and December 1999, were used.