Tags

Type your tag names separated by a space and hit enter

Spinal bone mineral density in premenopausal vegetarian and nonvegetarian women: cross-sectional and prospective comparisons.
J Am Diet Assoc. 1998 Jul; 98(7):760-5.JA

Abstract

OBJECTIVE

To compare spinal bone mineral density (BMD) and 1-year BMD change between premenopausal vegetarian and nonvegetarian women.

DESIGN

Cross-sectional comparison of spinal BMD at baseline and prospective comparison of a subsample.

SETTING

A western Canadian metropolitan area.

SUBJECTS/SAMPLES

Healthy vegetarian (n = 15 lacto-ovo-vegetarian, n = 8 vegan) and nonvegetarian (n = 22) women aged 20 to 40 years, with regular menstrual cycles and stable body weight completed baseline measurements. Twenty of these women (6 lacto-ovo-vegetarian, 5 vegan, 9 nonvegetarian) participated in repeat measurements at approximately 13 months.

STATISTICAL ANALYSES PERFORMED

Descriptive statistics, independent sample and paired t tests, 1-way analysis of variance, correlation analysis, and stepwise multiple regression were used to compare groups and to assess associations with BMD.

RESULTS

At baseline, subjects were 27.2 +/- 5.1 years old. Vegetarians had lower body mass index (21.1 +/- 2.3 vs 22.7 +/- 1.9, P < .05) and percent body fat (24.0 +/- 5.5% vs 27.4 +/- 5.1%, P < .05); they also tended to have lower BMD (1.148 +/- 0.111 g/cm2 vs 1.216 +/- 0.132 g/cm2, P = .06), although this was not apparent with weight as a covariate (P = .14). Baseline BMD was predicted by vitamin B-12 intake and total body fat (R2 = .24, P = .001). Participants in the follow-up differed only in their being older than nonparticipants. Over 1 year, mean BMD increased significantly (1.1%): by diet group, nonvegetarians' BMD increased but vegetarians' BMD was unchanged. No other monitored variables were associated with BMD change.

APPLICATIONS/CONCLUSIONS

Vegetarian women should be aware of links between low BMD and low body weight/body fat, and should maintain adequate intakes of nutrients believed to affect BMD.

Authors+Show Affiliations

University of British Columbia, Vancouver, Canada.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

9664916

Citation

Barr, S I., et al. "Spinal Bone Mineral Density in Premenopausal Vegetarian and Nonvegetarian Women: Cross-sectional and Prospective Comparisons." Journal of the American Dietetic Association, vol. 98, no. 7, 1998, pp. 760-5.
Barr SI, Prior JC, Janelle KC, et al. Spinal bone mineral density in premenopausal vegetarian and nonvegetarian women: cross-sectional and prospective comparisons. J Am Diet Assoc. 1998;98(7):760-5.
Barr, S. I., Prior, J. C., Janelle, K. C., & Lentle, B. C. (1998). Spinal bone mineral density in premenopausal vegetarian and nonvegetarian women: cross-sectional and prospective comparisons. Journal of the American Dietetic Association, 98(7), 760-5.
Barr SI, et al. Spinal Bone Mineral Density in Premenopausal Vegetarian and Nonvegetarian Women: Cross-sectional and Prospective Comparisons. J Am Diet Assoc. 1998;98(7):760-5. PubMed PMID: 9664916.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Spinal bone mineral density in premenopausal vegetarian and nonvegetarian women: cross-sectional and prospective comparisons. AU - Barr,S I, AU - Prior,J C, AU - Janelle,K C, AU - Lentle,B C, PY - 1998/7/17/pubmed PY - 1998/7/17/medline PY - 1998/7/17/entrez SP - 760 EP - 5 JF - Journal of the American Dietetic Association JO - J Am Diet Assoc VL - 98 IS - 7 N2 - OBJECTIVE: To compare spinal bone mineral density (BMD) and 1-year BMD change between premenopausal vegetarian and nonvegetarian women. DESIGN: Cross-sectional comparison of spinal BMD at baseline and prospective comparison of a subsample. SETTING: A western Canadian metropolitan area. SUBJECTS/SAMPLES: Healthy vegetarian (n = 15 lacto-ovo-vegetarian, n = 8 vegan) and nonvegetarian (n = 22) women aged 20 to 40 years, with regular menstrual cycles and stable body weight completed baseline measurements. Twenty of these women (6 lacto-ovo-vegetarian, 5 vegan, 9 nonvegetarian) participated in repeat measurements at approximately 13 months. STATISTICAL ANALYSES PERFORMED: Descriptive statistics, independent sample and paired t tests, 1-way analysis of variance, correlation analysis, and stepwise multiple regression were used to compare groups and to assess associations with BMD. RESULTS: At baseline, subjects were 27.2 +/- 5.1 years old. Vegetarians had lower body mass index (21.1 +/- 2.3 vs 22.7 +/- 1.9, P < .05) and percent body fat (24.0 +/- 5.5% vs 27.4 +/- 5.1%, P < .05); they also tended to have lower BMD (1.148 +/- 0.111 g/cm2 vs 1.216 +/- 0.132 g/cm2, P = .06), although this was not apparent with weight as a covariate (P = .14). Baseline BMD was predicted by vitamin B-12 intake and total body fat (R2 = .24, P = .001). Participants in the follow-up differed only in their being older than nonparticipants. Over 1 year, mean BMD increased significantly (1.1%): by diet group, nonvegetarians' BMD increased but vegetarians' BMD was unchanged. No other monitored variables were associated with BMD change. APPLICATIONS/CONCLUSIONS: Vegetarian women should be aware of links between low BMD and low body weight/body fat, and should maintain adequate intakes of nutrients believed to affect BMD. SN - 0002-8223 UR - https://www.unboundmedicine.com/medline/citation/9664916/Spinal_bone_mineral_density_in_premenopausal_vegetarian_and_nonvegetarian_women:_cross_sectional_and_prospective_comparisons_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0002-8223(98)00172-2 DB - PRIME DP - Unbound Medicine ER -