Tags

Type your tag names separated by a space and hit enter

A 3-year longitudinal study on body composition changes in the elderly: role of physical exercise.
Clin Nutr 2006; 25(4):573-80CN

Abstract

BACKGROUND

Cross-sectional data have shown that sarcopenia and fat accumulation are associated with aging and can be limited by structured physical training. However, it is often difficult to maintain a long-term compliance to training programs. It is not clear whether leisure-time physical activity is effective in preventing sarcopenia and fat accumulation.

OBJECTIVES

(i) To investigate longitudinal body composition changes in a population of elderly people in good apparent health. (ii) To evaluate the impact of leisure-time physical activity on muscle mass and characteristic as reflected by total body potassium per fat-free soft tissue (TBK/FFST), and on fat accumulation.

DESIGN

Longitudinal evaluation over 3 years, of body composition changes in 74 healthy men and 66 women, over 65 years old. Body fat and FFST were analyzed by dual-energy X-ray absorptiometry and TBK by whole-body (40)K counter. Physical activity was analyzed by a specific questionnaire.

RESULTS

Despite a stable total body weight, FFST and appendicular skeletal muscle mass slightly decreased (-0.3+/-1.4 and -0.2+/-2.2 kg, P<0.01, respectively) as well as the TBK/FFST (-4.1+/-6.3 mmol/kg, P<0.001), over the 3-year period. Body fat increased significantly (0.6+/-2.2 kg, P<0.0001), and it accumulated mainly in the abdomen (0.4+/-1.5 kg, P<0.01). Multiple regression analysis showed that body composition changes were related mainly to body weight changes. Nevertheless, positive linear correlations were observed between the degree of engagement in leisure-time physical activity and FFST (P<0.01), appendicular skeletal muscle mass (P<0.05), TBK/FFST (P<0.05), whereas negative correlation was observed with total and truncal fat (P<0.01).

CONCLUSIONS

Mild but significant decline in muscle mass and its TBK content, and body fat accumulation were observed over a 3-year period in healthy elderly subject: leisure-time physical activity does not seem to prevent them. However, a higher level of physical activity is associated with higher muscle mass and TBK content, and less total and truncal fat.

Authors+Show Affiliations

Geneva University Hospital, 1211 Geneva, Switzerland.No affiliation info availableNo affiliation info availableNo affiliation info availableNo 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

16330136

Citation

Raguso, Comasia Addolorata, et al. "A 3-year Longitudinal Study On Body Composition Changes in the Elderly: Role of Physical Exercise." Clinical Nutrition (Edinburgh, Scotland), vol. 25, no. 4, 2006, pp. 573-80.
Raguso CA, Kyle U, Kossovsky MP, et al. A 3-year longitudinal study on body composition changes in the elderly: role of physical exercise. Clin Nutr. 2006;25(4):573-80.
Raguso, C. A., Kyle, U., Kossovsky, M. P., Roynette, C., Paoloni-Giacobino, A., Hans, D., ... Pichard, C. (2006). A 3-year longitudinal study on body composition changes in the elderly: role of physical exercise. Clinical Nutrition (Edinburgh, Scotland), 25(4), pp. 573-80.
Raguso CA, et al. A 3-year Longitudinal Study On Body Composition Changes in the Elderly: Role of Physical Exercise. Clin Nutr. 2006;25(4):573-80. PubMed PMID: 16330136.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A 3-year longitudinal study on body composition changes in the elderly: role of physical exercise. AU - Raguso,Comasia Addolorata, AU - Kyle,Ursula, AU - Kossovsky,Michel Picard, AU - Roynette,Catherine, AU - Paoloni-Giacobino,Ariane, AU - Hans,Didier, AU - Genton,Laurence, AU - Pichard,Claude, Y1 - 2005/12/05/ PY - 2005/05/16/received PY - 2005/10/27/accepted PY - 2005/12/7/pubmed PY - 2006/12/13/medline PY - 2005/12/7/entrez SP - 573 EP - 80 JF - Clinical nutrition (Edinburgh, Scotland) JO - Clin Nutr VL - 25 IS - 4 N2 - BACKGROUND: Cross-sectional data have shown that sarcopenia and fat accumulation are associated with aging and can be limited by structured physical training. However, it is often difficult to maintain a long-term compliance to training programs. It is not clear whether leisure-time physical activity is effective in preventing sarcopenia and fat accumulation. OBJECTIVES: (i) To investigate longitudinal body composition changes in a population of elderly people in good apparent health. (ii) To evaluate the impact of leisure-time physical activity on muscle mass and characteristic as reflected by total body potassium per fat-free soft tissue (TBK/FFST), and on fat accumulation. DESIGN: Longitudinal evaluation over 3 years, of body composition changes in 74 healthy men and 66 women, over 65 years old. Body fat and FFST were analyzed by dual-energy X-ray absorptiometry and TBK by whole-body (40)K counter. Physical activity was analyzed by a specific questionnaire. RESULTS: Despite a stable total body weight, FFST and appendicular skeletal muscle mass slightly decreased (-0.3+/-1.4 and -0.2+/-2.2 kg, P<0.01, respectively) as well as the TBK/FFST (-4.1+/-6.3 mmol/kg, P<0.001), over the 3-year period. Body fat increased significantly (0.6+/-2.2 kg, P<0.0001), and it accumulated mainly in the abdomen (0.4+/-1.5 kg, P<0.01). Multiple regression analysis showed that body composition changes were related mainly to body weight changes. Nevertheless, positive linear correlations were observed between the degree of engagement in leisure-time physical activity and FFST (P<0.01), appendicular skeletal muscle mass (P<0.05), TBK/FFST (P<0.05), whereas negative correlation was observed with total and truncal fat (P<0.01). CONCLUSIONS: Mild but significant decline in muscle mass and its TBK content, and body fat accumulation were observed over a 3-year period in healthy elderly subject: leisure-time physical activity does not seem to prevent them. However, a higher level of physical activity is associated with higher muscle mass and TBK content, and less total and truncal fat. SN - 0261-5614 UR - https://www.unboundmedicine.com/medline/citation/16330136/A_3_year_longitudinal_study_on_body_composition_changes_in_the_elderly:_role_of_physical_exercise_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0261-5614(05)00190-1 DB - PRIME DP - Unbound Medicine ER -