Effect of Exercise Training on Physical Activity and Substrate Utilization in the Elderly

This study examined the effect of training on physical activity and substrate utilization in the elderly. Before the start, in week 6 and week 12 (T0, T6 and T12) data on physical fitness, physical activity and substrate utilization were collected in the exercise (11 males, 11 females; 63 +/- 8yrs)...

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Published in:International journal of sports medicine 2000-10, Vol.21 (7), p.499-504
Main Authors: Meijer, E. P., Westerterp, K. R., Verstappen, F. T. J.
Format: Article
Language:English
Subjects:
Aged - physiology
Biological and medical sciences
Calorimetry
Female
Fundamental and applied biological sciences. Psychology
Humans
Male
Metabolism - physiology
Middle Aged
Physical Exertion - physiology
Training and Testing
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
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container_issue 7
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container_title International journal of sports medicine
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creator Meijer, E. P.
Westerterp, K. R.
Verstappen, F. T. J.
description This study examined the effect of training on physical activity and substrate utilization in the elderly. Before the start, in week 6 and week 12 (T0, T6 and T12) data on physical fitness, physical activity and substrate utilization were collected in the exercise (11 males, 11 females; 63 +/- 8yrs) and control group (6 males, 5 females; 59 +/- 4yrs). Physical activity was registered with a tri-axial accelerometer and substrate utilization was calculated from resting respiratory exchange ratio (RER) by indirect calorimetry. At T6 physical activity on training days was significantly higher than on non-training days (33.4 +/- 10.3 vs. 26.5 +/- 7.8 counts x min(-1); p
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At T12, after adjusting for training activity, physical activity on training days was significantly lower than on non-training days (23.7 +/- 8.4 vs. 28.2 +/- 9.3 counts x min(-1); p&lt;0.01). RER decreased significantly (0.02 +/- 0.03; p &lt;0.05), indicating a relatively larger fat oxidation. Changes in RER were negatively correlated with pre-training RER. In conclusion, in elderly an increase in structured training (exercise) is compensated for by a corresponding decrease in non-training physical activity. 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Training increased relative fat utilization in elderly with a high pre-training RER, whereas elderly with a low pre-training RER decreased their relative fat utilization.</description><subject>Aged - physiology</subject><subject>Biological and medical sciences</subject><subject>Calorimetry</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Humans</subject><subject>Male</subject><subject>Metabolism - physiology</subject><subject>Middle Aged</subject><subject>Physical Exertion - physiology</subject><subject>Training and Testing</subject><subject>Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. 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source Thieme Connect Journals
subjects Aged - physiology
Biological and medical sciences
Calorimetry
Female
Fundamental and applied biological sciences. Psychology
Humans
Male
Metabolism - physiology
Middle Aged
Physical Exertion - physiology
Training and Testing
Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
title Effect of Exercise Training on Physical Activity and Substrate Utilization in the Elderly
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