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The effects of oral nutritional interventions combined with physical activity on nutritional and functional outcomes in the management of malnutrition: a systematic review

Published online by Cambridge University Press:  19 October 2012

H. Ayling  and
C. Baldwin
H. Ayling
Affiliation:
King's College London, 150 Stamford Street, London, SE1 9NH, UK
C. Baldwin
Affiliation:
King's College London, 150 Stamford Street, London, SE1 9NH, UK
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Abstract

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Proceedings of the Nutrition Society , Volume 71 , Issue OCE2: Summer Meeting hosted by the Irish Section, 16–19 July 2012, Translational nutrition: integrating research, practice and policy , 2012 , E112
Copyright
Copyright © The Authors 2012

The effects of oral nutritional interventions on functional and nutritional outcomes in nutritionally vulnerable individuals are inconsistent, thus parallel therapies to enhance therapeutic management warrant exploration( Reference Koretz, Avenell and Lipman 1 ). Physical activity, shown to attenuate the inflammatory response( Reference Gleeson, McFarlin and Flynn 2 ) and enhance appetite( Reference Stephens and Fearon 3 ), is a cost effective and accessible option( Reference Roine, Poine and Rasanen 4 ). This systematic review and meta-analysis synthesizes the evidence for nutritional intervention and physical activity combined compared to nutrition alone, exercise alone or routine care in nutritionally vulnerable individuals.

Searches of 5 electronic databases and bibliographies were undertaken to September 2011. Trials comparing oral nutritional intervention and exercise with (1) nutritional intervention alone, (2) exercise alone or (3) routine care were eligible for inclusion. Data on energy intake, weight, fat free mass, strength and gait were entered into a meta-analysis using Review Manager 5.0.

23 randomised controlled trials (RCTs) were identified (n=1430 participants) including elderly (11 RCTs), COPD (2 RCTs), HIV (2 RCTs), critical illness (1 RCT), renal disease (2 RCTs), muscle wasting (1RCT) and osteo-degenerative disease (4 RCTs). Duration of follow up ranged from 7 to 78 weeks. 10 studies compared combined intervention with nutritional alone, 11 with exercise alone and 12 with routine care. 7 studies included comparisons in more than one part of the review. Two studies provided no usable data. One study included personalized dietary counseling, with no food or oral nutritional supplementation, as the nutritional intervention and accounted for all of the heterogeneity in analyses; results are presented with this study removed( Reference Stephens and Fearon 3 ). All studies were judged to be at risk of bias for one or more characteristic.

MD=mean difference, *=result statistically significant, CI=confidence interval, n=number of studies.

Nutritional intervention combined with physical activity is associated with significant improvements in energy intake compared with either therapy alone or routine care and may result in improvements to weight and functional improvements.

Nutritional intervention given in combination with exercise has promising effects on energy intake but larger studies are needed to investigate whether these increases have effects on clinical, functional and patient centred endpoints.

References

1. Koretz, RL, Avenell, A, Lipman, TO et al. (2007) Am J Gastroenterol 102, 412–29.CrossRefGoogle Scholar
2 Gleeson, M, McFarlin, B and Flynn, M (2006) Exerc Immunol Rev 12, 34–53.Google Scholar
3. Stephens, NA and Fearon, KCH (2008) Medicine 36, 78–81.Google Scholar
4. Roine, E, Poine, R, Rasanen, P et al. (2009) Int J Technol Assess 25, 427–454.CrossRefGoogle Scholar
5. Rydwik, E, Gustafsson, T, Frandin, K et al. (2010) Aging-Clinical & Experimental Research 22, 85–94.CrossRefGoogle Scholar