The influence of red meat intake upon the response to a resistance exercise-training program in older Australians.

The influence of red meat intake upon the response to a resistance exercise-training program in older Australians. Research Abstract Details 

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The influence of red meat intake upon the response to a resistance exercise-training program in older Australians. Abstract Text:

P L McLennan,L C Tapsell,A J Owen,I F Gutteridge,

Background - In older adults muscle performance declines with age, and in the elderly this can have a major impact on daily living by impairing the ability to undertake routine activities, increasing risk of falls and hindering recovery from injury. A recent study has suggested that the protein intake of older adults may be insufficient to maintain optimum muscle capacity. Objective - To examine the effects of a 12-week diet and exercise program upon skeletal muscle performance and body composition in older Australians. Design - Subjects (n =28, mean age =67yr, range 63-76yr) undertook a lower limb resistance-training program while consuming a diet with 20% energy as protein delivered through two levels of red meat intake (either moderate =800g/week, or low =400g/week in combination with other sources of dietary protein). Muscle performance was assessed at weeks 0,6 and 12. At week 0 and week 12, body composition was assessed using anthropometry, BIA and thigh X-sectional CT, and dietary intake assessed by diet history. Outcomes - Exercise training significantly increased leg muscle strength by more than 50% (P<0.01) and muscle endurance about 30% (P<0.01), and reduced thigh skin folds about 15% (P<0.01). Subjects on the moderate red meat diet had greater improvements in muscle strength at week 6 than those on the low red meat diet (P<0.01), but this difference was abolished at the study endpoint. The red meat was incorporated into both diets with no change in overall energy intake. Conclusions - In older Australians, a resistance-training program markedly increased muscle strength. Consuming a diet with a moderate red meat content compared to a low red meat content in part enhanced the benefits upon muscle performance.

The influence of red meat intake upon the response to a resistance exercise-training program in older Australians. Publishing Authors By Initials

PL McLennan,LC Tapsell,AJ Owen,IF Gutteridge,

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The influence of red meat intake upon the response to a resistance exercise-training program in older Australians. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Asia Pacific journal of clinical nutrition

VOLUME: 12 Suppl

Page Numbers: S17

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ISSN: 0964-7058

DAY: 16

MONTH: 03

YEAR: 2003

The influence of red meat intake upon the response to a resistance exercise-training program in older Australians. Information

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LANGUAGE: eng

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Grant and Affiliation Information for The influence of red meat intake upon the response to a resistance exercise-training program in older Australians.

AFFILIATION: Smart Foods Centre,University of Wollongong, NSW 2522.

Country: Australia

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MEDLINETA: Asia Pac J Clin Nutr

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