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Nutritional strategies for endurance and ultra-endurance cycling
Includes abstract.
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| Format: | Thesis |
| Language: | English |
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Department of Human Biology
2014
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| _version_ | 1867613744069083136 |
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| access_status_str | Open Access |
| author | Haveman, Lize |
| author2 | Goedecke, Jula |
| author_browse | Goedecke, Jula Haveman, Lize |
| author_facet | Goedecke, Jula Haveman, Lize |
| author_sort | Haveman, Lize |
| collection | Thesis |
| description | Includes abstract. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/3241 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:41:00.685Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Human Biology |
| publisherStr | Department of Human Biology |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/3241 Nutritional strategies for endurance and ultra-endurance cycling Haveman, Lize Goedecke, Jula Human Biology Includes abstract. Includes bibliographical references. Ingestion of a high carbohydrate (CHO) diet (7-10 g CHO/kg body mass) for 3 days, typically referred to as ‘CHO-loading’, is a commonly recommended dietary practice for endurance sporting events lasting >90 minutes. CHOloading effectively maximizes muscle glycogen stores and has been shown to enhance prolonged exercise performance. However, the body’s glycogen stores are limited, therefore a dietary strategy that would not only increase CHO availability but also ‘spare’ muscle glycogen during exercise may be more beneficial during prolonged exercise compared to a standard CHO-loading diet. Preliminary studies in which athletes ingested a high fat diet (4-4.6 g fat/kg body mass) for 5-6 days followed by 1 day of CHO-loading have been shown to increase fat oxidation and ‘spare’ muscle glycogen during prolonged exercise compared to a high CHO diet. However, the effectiveness of a high fat diet followed by CHO-loading has not been tested in self-paced endurance and ultra-endurance events. Further, there is little available evidence concerning the pre-event habitual dietary practices of ultra-endurance athletes. It is possible that athletes and cyclists competing in endurance and ultra-endurance events have diets which may differ in macronutrient content compared to that typically recommended for endurance events. As a result, athletes may not respond in a similar way to diets typically recommended for endurance and ultra-endurance events, such as CHO-loading. The aims of this thesis were therefore: (1) to characterize the habitual dietary intakes of sub-elite male cyclists before and during an ultra-endurance event; (2) to investigate the effects of different dietary strategies aimed at increasing carbohydrate availability and ‘sparing’ muscle glycogen (e.g. CHO-loading and fat-adaptation), on substrate utilization and exercise performance during simulated endurance and ultra-endurance exercise; and (3) to investigate the individual responsiveness of athletes to these dietary strategies. 2014-07-28T18:16:36Z 2014-07-28T18:16:36Z 2008 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/3241 eng application/pdf Department of Human Biology Faculty of Health Sciences University of Cape Town |
| spellingShingle | Human Biology Haveman, Lize Nutritional strategies for endurance and ultra-endurance cycling |
| thesis_degree_str | Doctoral |
| title | Nutritional strategies for endurance and ultra-endurance cycling |
| title_full | Nutritional strategies for endurance and ultra-endurance cycling |
| title_fullStr | Nutritional strategies for endurance and ultra-endurance cycling |
| title_full_unstemmed | Nutritional strategies for endurance and ultra-endurance cycling |
| title_short | Nutritional strategies for endurance and ultra-endurance cycling |
| title_sort | nutritional strategies for endurance and ultra endurance cycling |
| topic | Human Biology |
| url | http://hdl.handle.net/11427/3241 |
| work_keys_str_mv | AT havemanlize nutritionalstrategiesforenduranceandultraendurancecycling |