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Left ventricular function after ultra-distance triathlon : response is dependent on the cardiac loading conditions
The purpose of this thesis is to establish if there is any evidence to support the hypothesis that altered ventricular loading conditions after the cessation of exercise may cause "cardiac fatigue". The studies that have shown post-exercise "cardiac fatigue" have not controlled for either preload or...
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| Format: | Thesis |
| Language: | English |
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MRC/UCT RU for Exercise and Sport Medicine
2017
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| _version_ | 1867613183523422209 |
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| access_status_str | Open Access |
| author | Hassan, Muhammad Yusuf |
| author2 | Noakes, Timothy |
| author_browse | Hassan, Muhammad Yusuf Noakes, Timothy |
| author_facet | Noakes, Timothy Hassan, Muhammad Yusuf |
| author_sort | Hassan, Muhammad Yusuf |
| collection | Thesis |
| description | The purpose of this thesis is to establish if there is any evidence to support the hypothesis that altered ventricular loading conditions after the cessation of exercise may cause "cardiac fatigue". The studies that have shown post-exercise "cardiac fatigue" have not controlled for either preload or afterload or both, before and after exercise. These studies may rather have identified the effects of alterations in peripheral vascular function on left ventricular function after prolonged exercise. The research study in this thesis is to evaluate if the loading conditions of the heart affect the echocardiographic measurements after exercise that may be misinterpreted as "cardiac fatigue". Echocardiography as a tool of cardiac evaluation cannot be done during exercise because of the technical difficulty of doing a cardiac ultrasound on a human being in motion. The studies that have investigated post exercise "cardiac fatigue" have therefore measured cardiac function after exercise and retrospectively assumed that the cardiac dysfunction was present during exercise since the cardiac demands are at their peak during exercise. However, the post exercise period may be associated with altered loading conditions that may cause changes in the echocardiographic measurements that are similar to cardiac abnormalities. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/25803 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:32:06.010Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| publisher | MRC/UCT RU for Exercise and Sport Medicine |
| publisherStr | MRC/UCT RU for Exercise and Sport Medicine |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/25803 Left ventricular function after ultra-distance triathlon : response is dependent on the cardiac loading conditions Hassan, Muhammad Yusuf Noakes, Timothy Sports Medicine The purpose of this thesis is to establish if there is any evidence to support the hypothesis that altered ventricular loading conditions after the cessation of exercise may cause "cardiac fatigue". The studies that have shown post-exercise "cardiac fatigue" have not controlled for either preload or afterload or both, before and after exercise. These studies may rather have identified the effects of alterations in peripheral vascular function on left ventricular function after prolonged exercise. The research study in this thesis is to evaluate if the loading conditions of the heart affect the echocardiographic measurements after exercise that may be misinterpreted as "cardiac fatigue". Echocardiography as a tool of cardiac evaluation cannot be done during exercise because of the technical difficulty of doing a cardiac ultrasound on a human being in motion. The studies that have investigated post exercise "cardiac fatigue" have therefore measured cardiac function after exercise and retrospectively assumed that the cardiac dysfunction was present during exercise since the cardiac demands are at their peak during exercise. However, the post exercise period may be associated with altered loading conditions that may cause changes in the echocardiographic measurements that are similar to cardiac abnormalities. 2017-10-25T09:25:55Z 2017-10-25T09:25:55Z 2003 2017-08-23T13:19:45Z Master Thesis Masters MPhil http://hdl.handle.net/11427/25803 eng application/pdf MRC/UCT RU for Exercise and Sport Medicine Faculty of Health Sciences University of Cape Town |
| spellingShingle | Sports Medicine Hassan, Muhammad Yusuf Left ventricular function after ultra-distance triathlon : response is dependent on the cardiac loading conditions |
| thesis_degree_str | Master's |
| title | Left ventricular function after ultra-distance triathlon : response is dependent on the cardiac loading conditions |
| title_full | Left ventricular function after ultra-distance triathlon : response is dependent on the cardiac loading conditions |
| title_fullStr | Left ventricular function after ultra-distance triathlon : response is dependent on the cardiac loading conditions |
| title_full_unstemmed | Left ventricular function after ultra-distance triathlon : response is dependent on the cardiac loading conditions |
| title_short | Left ventricular function after ultra-distance triathlon : response is dependent on the cardiac loading conditions |
| title_sort | left ventricular function after ultra distance triathlon response is dependent on the cardiac loading conditions |
| topic | Sports Medicine |
| url | http://hdl.handle.net/11427/25803 |
| work_keys_str_mv | AT hassanmuhammadyusuf leftventricularfunctionafterultradistancetriathlonresponseisdependentonthecardiacloadingconditions |