torres-effectsofprogressive-2017.pdf (535.42 kB)
Effects of progressive resistance training combined with a protein-enriched lean red meat diet on health-related quality of life in elderly women: secondary analysis of a 4-month cluster randomised controlled trial
journal contribution
posted on 2017-06-01, 00:00 authored by Susan TorresSusan Torres, S Robinson, Liliana OrellanaLiliana Orellana, Stella O'ConnellStella O'Connell, Carley GrimesCarley Grimes, Niamh MundellNiamh Mundell, David DunstanDavid Dunstan, Caryl NowsonCaryl Nowson, Robin DalyRobin DalyResistance training (RT) and increased dietary protein are recommended to attenuate age-related muscle loss in the elderly. This study examined the effect of a lean red meat protein-enriched diet combined with progressive resistance training (RT+Meat) on health-related quality of life (HR-QoL) in elderly women. In this 4-month cluster randomised controlled trial, 100 women aged 60-90 years (mean 73 years) from self-care retirement villages participated in RT twice a week and were allocated either 160 g/d (cooked) lean red meat consumed across 2 meals/d, 6 d/week or ≥1 serving/d (25-30 g) carbohydrates (control group, CRT). HR-QoL (SF-36 Health Survey questionnaire), lower limb maximum muscle strength and lean tissue mass (LTM) (dual-energy X-ray absorptiometry) were assessed at baseline and 4 months. In all, ninety-one women (91 %) completed the study (RT+Meat (n 48); CRT (n 43)). Mean protein intake was greater in RT+Meat than CRT throughout the study (1·3 (sd 0·3) v. 1·1 (sd 0·3) g/kg per d, P<0·05). Exercise compliance (74 %) was not different between groups. After 4 months there was a significant net benefit in the RT+Meat compared with CRT group for overall HR-QoL and the physical component summary (PCS) score (P<0·01), but there were no changes in either group in the mental component summary (MCS) score. Changes in lower limb muscle strength, but not LTM, were positively associated with changes in overall HR-QoL (muscle strength, β: 2·2 (95 % CI 0·1, 4·3), P<0·05). In conclusion, a combination of RT and increased dietary protein led to greater net benefits in overall HR-QoL in elderly women compared with RT alone, which was because of greater improvements in PCS rather than MCS.
History
Journal
British journal of nutritionVolume
117Issue
11Pagination
1550 - 1559Publisher
Cambridge University PressLocation
Cambridge, Eng.Publisher DOI
ISSN
0007-1145eISSN
1475-2662Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2017, The AuthorsUsage metrics
Categories
No categories selectedKeywords
quality of liferesistance trainingdietary proteinsred meatelderly womeninterventionsCRT control resistance trainingHR-QoL health-related quality of lifeLTM lean tissue massMCS mental component summaryPCS physical component summaryPRT progressive resistance trainingQoL quality of lifeRT+Meat resistance training plus lean red meatSF-36 SF-36 Health SurveyActivities of Daily LivingAgedAged, 80 and overBody Fluid CompartmentsDietFeeding BehaviorFemaleHealth StatusHealth SurveysHumansMiddle AgedMuscle StrengthMuscle, SkeletalPhysical FitnessScience & TechnologyLife Sciences & BiomedicineNutrition & DieteticsNURSING-HOME RESIDENTSOBESE OLDER-ADULTSSKELETAL-MUSCLEPHYSICAL-ACTIVITYVITAMIN-DWHEY-PROTEINDOUBLE-BLINDWEIGHT-LOSSSTRENGTHMASS
Licence
Exports
RefWorks
BibTeX
Ref. manager
Endnote
DataCite
NLM
DC