Abstract:
:The relationship between running intensity and the accumulation of hypoxanthine and uric acid in plasma was studied in four well-trained runners. The runners each performed several 800-m runs at different velocities, each run being performed on separate days. Venous blood samples were collected before and at regular intervals after the runs. The concentration of hypoxanthine and uric acid was determined with high performance liquid chromatography (HPLC) in plasma extracts. A marked increase in the plasma concentration of both hypoxanthine and uric acid occurred simultaneously at intensities corresponding to 110, 108, 115 and 107% of VO2max for subject a, b, c and d, respectively. The sudden sharp increase in plasma concentration of hypoxanthine and uric acid may indicate that at a certain level of running intensity ATP catabolism exceeds the rate of ATP regeneration from the normal metabolic pathways.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Sjödin B,Hellsten Westing Ydoi
10.1055/s-2007-1024844subject
Has Abstractpub_date
1990-12-01 00:00:00pages
493-5issue
6eissn
0172-4622issn
1439-3964journal_volume
11pub_type
杂志文章abstract::The purpose was to analyze the influence of oral contraceptive use on body composition and strength levels in trained women. Twenty-three resistance-trained women participated in this study (age=27.4±3.4 years; fat mass=28.0±5.0%; BMI=22.9±2.7 kg∙m-2). Subjects performed an 8-week non-linear resistance-training progra...
journal_title:International journal of sports medicine
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journal_title:International journal of sports medicine
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journal_title:International journal of sports medicine
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pub_type: 临床试验,杂志文章,随机对照试验
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