Effects of One Year Aerobic Endurance Training on Resting Metabolic Rate and Exercise Fat Oxidation in Previously Untrained Men and Women: Metabolic Endurance Training Adaptations

• Published in: International journal of sports medicine 2010-07, Vol.31 (7), p.498-504
• Main Authors: SCHARHAG-ROSENBERGER, F, MEYER, T, WALITZEK, S, KINDERMANN, W
• Format: Article
• Language: English
• Subjects: Adipose Tissue - metabolism; Adult; Basal Metabolism - physiology; Biological and medical sciences; Calorimetry, Indirect; Exercise - physiology; Exercise Test; Female; Fundamental and applied biological sciences. Psychology; Heart Rate; Humans; Male; Middle Aged; Oxidation-Reduction; Physical Endurance; Vertebrates: body movement. Posture. Locomotion. Flight. Swimming. Physical exercise. Rest. Sports
• ISSN: 0172-4622; 1439-3964
• DOI: 10.1055/s-0030-1249621

Although metabolic training adaptations are considered to be an important aim of recreational endurance exercise, effects of aerobic endurance training on metabolism have hardly been recorded over longer training periods. The aim of the study was therefore to record changes in resting metabolic rate (RMR), substrate oxidation at rest and maximal exercise fat oxidation rate (MFO) after one year of recreational endurance training within the ACSM-recommendations. Seventeen sedentary participants (7 male symbol/10 female symbol, 42+/-5 yr, pre-training characteristics: BMI: 24.6+/-2.2 kg.m (-2), VO(2max): 37.5+/-4.7 ml.min (-1).kg (-1)) completed a 12 months jogging/walking program 3 days/week for 45 min/session at a constant heart rate (HR) prescription of 60% HR-reserve. Resting measurements and maximal incremental treadmill tests were conducted before the training program, after 6 and 12 months of training. Indirect calorimetry was used to assess metabolic parameters. After 12 months of training, body weight remained unchanged ( P=0.16), however, body fat was significantly reduced by 3.4+/-2.1% ( P