Physical exercise or micronutrient supplementation for the wellbeing of the frail elderly? A randomised controlled trial.
OBJECTIVE
To examine the effects of 17 weeks of physical exercise and micronutrient supplementation on the psychological wellbeing of 139 independently living, frail, elderly subjects (inactive, body mass index < or =25 or experiencing weight loss).


METHODS
Participants (mean (SD) age 78.5 (5.7)) were randomly assigned to: (a) comprehensive, moderate intensity, group exercise; (b) daily micronutrient enriched foods (25-100% recommended daily amount); (c) both; (d) neither. A social programme and identical regular foods were offered as attention control and placebo.


RESULTS
At baseline, moderate to low but significant correlations were found between general wellbeing scores and physical fitness (r = 0.28), functional performance (r = 0.37), and blood concentrations of pyridoxine (r = 0.20), folate (r = 0.25), and vitamin D (r = 0.23) (all p values < or =0.02), but not with physical activity levels and other blood vitamin concentrations. General wellbeing score and self rated health were not responsive to 17 weeks of exercise or nutritional intervention.


CONCLUSIONS
Psychological wellbeing in frail elderly people was not responsive to 17 weeks of intervention with exercise and/or micronutrient enriched foods. The moderate but significant correlations between wellbeing and physical fitness and several blood vitamin concentrations at baseline suggest that changes in wellbeing may occur after long term interventions.
Chin A Paw
M J M
MJ
Division of Human Nutrition and Epidemiology, Wageningen University, The Netherlands. M.Chinapaw.emgo@med.vu.nl
de Jong
N
N
Schouten
E G
EG
van Staveren
W A
WA
Kok
F J
FJ
D000203:Activities of Daily Living; D000368:Aged / Q000502:physiology* / Q000523:psychology*; D000369:Aged, 80 and over; D019587:Dietary Supplements; D005081:Exercise Therapy / Q000379:methods*; D005260:Female; D016330:Frail Elderly / Q000523:psychology*; D006304:Health Status; D006801:Humans; D008297:Male; D008603:Mental Health; D018977:Micronutrients / Q000008:administration & dosage*; D009752:Nutritional Status; D010809:Physical Fitness / Q000502:physiology / Q000523:psychology
D018977:Micronutrients