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Dietary animal protein intake: association with muscle mass index in older women.
J Nutr Health Aging 2007 Sep-Oct; 11(5):383-7JN

Abstract

BACKGROUND

Aging is associated with reductions in muscle mass and strength, so-called sarcopenia, and is generally characterized using muscle mass index (MMI = FFM (kg)/height (m)2). It is believed that adequate nutrition especially regarding protein intake, can delay this progression and enhance the quality of life of elders.

OBJECTIVES

We examined whether the predominant source of protein consumed (animal or vegetal) by older women was associated with MMI.

DESIGN

Thirty-eight healthy, normal weight, sedentary women, aged between 57-75 years (mean age: 66 +/- 5 years old), and taking no medication that could influence metabolism were recruited. Body composition was measured by dual-energy X-ray absorptiometry; muscle protein content was measured by the use of creatinine excretion. Physical activity metabolism was obtained by the use of accelerometry, and indirect calorimetry. Finally, protein intake was measured with a 3-day dietary record.

RESULTS

Significant correlations were observed between MMI and body mass index, fat-free mass, muscle protein content, total protein intake, animal protein intake, fat mass, visceral fat and daily energy expenditure. However, a stepwise regression analysis showed animal protein intake to be the only independent predictor of MMI (r2=0.19; p=0.008).

CONCLUSIONS

Our results suggest that protein intake, especially from animal sources, may be associated with a better preservation of MMI. However, more research is needed to confirm our results.

Authors+Show Affiliations

Research Centre on Aging, Geriatric Institute of Sherbrooke University, Faculty of Physical Education and Sports, Québec, Canada.No affiliation info availableNo 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

17657359

Citation

Lord, C, et al. "Dietary Animal Protein Intake: Association With Muscle Mass Index in Older Women." The Journal of Nutrition, Health & Aging, vol. 11, no. 5, 2007, pp. 383-7.
Lord C, Chaput JP, Aubertin-Leheudre M, et al. Dietary animal protein intake: association with muscle mass index in older women. J Nutr Health Aging. 2007;11(5):383-7.
Lord, C., Chaput, J. P., Aubertin-Leheudre, M., Labonté, M., & Dionne, I. J. (2007). Dietary animal protein intake: association with muscle mass index in older women. The Journal of Nutrition, Health & Aging, 11(5), pp. 383-7.
Lord C, et al. Dietary Animal Protein Intake: Association With Muscle Mass Index in Older Women. J Nutr Health Aging. 2007;11(5):383-7. PubMed PMID: 17657359.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dietary animal protein intake: association with muscle mass index in older women. AU - Lord,C, AU - Chaput,J P, AU - Aubertin-Leheudre,M, AU - Labonté,M, AU - Dionne,I J, PY - 2007/7/28/pubmed PY - 2007/12/6/medline PY - 2007/7/28/entrez SP - 383 EP - 7 JF - The journal of nutrition, health & aging JO - J Nutr Health Aging VL - 11 IS - 5 N2 - BACKGROUND: Aging is associated with reductions in muscle mass and strength, so-called sarcopenia, and is generally characterized using muscle mass index (MMI = FFM (kg)/height (m)2). It is believed that adequate nutrition especially regarding protein intake, can delay this progression and enhance the quality of life of elders. OBJECTIVES: We examined whether the predominant source of protein consumed (animal or vegetal) by older women was associated with MMI. DESIGN: Thirty-eight healthy, normal weight, sedentary women, aged between 57-75 years (mean age: 66 +/- 5 years old), and taking no medication that could influence metabolism were recruited. Body composition was measured by dual-energy X-ray absorptiometry; muscle protein content was measured by the use of creatinine excretion. Physical activity metabolism was obtained by the use of accelerometry, and indirect calorimetry. Finally, protein intake was measured with a 3-day dietary record. RESULTS: Significant correlations were observed between MMI and body mass index, fat-free mass, muscle protein content, total protein intake, animal protein intake, fat mass, visceral fat and daily energy expenditure. However, a stepwise regression analysis showed animal protein intake to be the only independent predictor of MMI (r2=0.19; p=0.008). CONCLUSIONS: Our results suggest that protein intake, especially from animal sources, may be associated with a better preservation of MMI. However, more research is needed to confirm our results. SN - 1279-7707 UR - https://www.unboundmedicine.com/medline/citation/17657359/Dietary_animal_protein_intake:_association_with_muscle_mass_index_in_older_women_ L2 - https://medlineplus.gov/dietaryproteins.html DB - PRIME DP - Unbound Medicine ER -