Abstract：
STUDY DESIGN:Determination of fat oxidation at three different intensities in trained wheelchair athletes on the treadmill. OBJECTIVE:The aim of the study was to assess the level and highest rate of fat oxidation in endurance-trained wheelchair athletes for recommendation on endurance training. SETTING:Institute of Sports Medicine, Swiss Paraplegic Centre, Nottwil, Switzerland. METHODS:Nine (seven men and two women) endurance-trained wheelchair athletes (VO(2peak) 40.2+/-6.7 ml/kg/min) were studied over 20 min at 55, 65 and 75% VO(2peak) on a treadmill in their own racing wheelchairs in order to find the exercise intensity with the highest absolute fat oxidation. RESULTS:As presumed, total energy expenditure for wheelchair racing was highest at 75% VO(2peak), while absolute fat oxidation was statistically not significantly different at the three tested intensities. Percentage of energy expenditure from fat oxidation decreased with increasing intensity from 31.4% at 55% VO(2peak) to 20.9% at 75% VO(2peak), while percentage from carbohydrate oxidation increased from 68.6% at 55% VO(2peak) to 79.1% at 75% VO(2peak). CONCLUSION:For wheelchair athletes, we recommend training of fat metabolism for endurance exercise at an intensity of 55% VO(2peak), because absolute fat metabolism is not higher at higher intensities but less carbohydrates are used at lower intensity levels. At lower intensities, exercise can be performed over a longer time before the emptied glycogen stores will limit exercise duration. This may apply especially to paraplegic subjects whose active muscle mass is limited in contrast to able-bodied athletes.
journal_name
Spinal Cordjournal_title
Spinal cordauthors
Knechtle B,Müller G,Willmann F,Eser P,Knecht Hdoi
10.1038/sj.sc.3101548subject
Has Abstractpub_date
2004-01-01 00:00:00pages
24-8issue
1eissn
1362-4393issn
1476-5624pii
3101548journal_volume
42pub_type
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