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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Hernández-Torres, R. P. Ramos-Jiménez, A. Torres-Durán, P. V. Romero-Gonzalez, J. Mascher, D. Posadas-Romero, C. Juárez-Oropeza, M. A. |
| Description | Country affiliation: Mexico Author Affiliation: Hernández-Torres RP ( Faculty of Physical Education and Sport Sciences, Autonomous University of Chihuahua (UACH), Mexico. rhernant@uach.mx) |
| Abstract | The factors responsible for the acute effects of exercise on blood lipids are not well known, and there have been few studies comparing different kinds of exercise in the same population. The concentration of blood lipids was evaluated in this study at the end and at post-24h of two 14km/90min single exercise sessions: continuous exercise (CE) at 44.5+/-5.6% VO(2max) and intermittent exercise (IE) at 39-72% VO(2max), in subjects with high levels of aerobic training. Fourteen male athletes (endurance runners) took part in this study and each completed a 24h dietary record. The O(2) uptake and CO(2) production were recorded, and blood lactate and blood lipids were measured. The results showed that triacylglycerols were not modified by any kind of exercise. Total cholesterol was increased at the end of both exercises: 7.04% for CE (p<0.001) and 4.23% for IE (p=0.001). High-density lipoprotein cholesterol was increased at the end of IE: 11.38% (p=0.03) and low-density lipoprotein cholesterol was increased only at the end of CE: 7.45% (p=0.006). The increase of lipids for CE was negatively correlated with aerobic fitness indicators (heart rate and %HRmax at lactate threshold), and was positively associated with energy expenditure. For IE, %HRmax and lactate were negatively correlated, and the respiratory exchange ratio was positively correlated, with the lipid increase. We conclude that in trained male athletes, a 14km run in 90min induced different changes of lipid profile if the exercise was done continuously or intermittently, and that in CE the extent of these increases was influenced by aerobic fitness. |
| File Format | HTM / HTML |
| ISSN | 14402440 |
| Issue Number | 2 |
| Volume Number | 12 |
| e-ISSN | 18781861 |
| Journal | Journal of Science and Medicine in Sport |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2009-03-01 |
| Publisher Place | Australia |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Sports Medicine Anaerobic Threshold Physiology Cholesterol, Hdl Blood Cholesterol, Ldl Exercise Running Triglycerides Adolescent Adult Athletic Performance Humans Male Young Adult Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Orthopedics and Sports Medicine Physical Therapy, Sports Therapy and Rehabilitation Sports Science |
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