{"id":{"repo_id":"vu-aus","oai_identifier":"oai:eprints.vu.edu.au:15329"},"canonical_url":"https://search.dev.ndltd.org/etd/vu-aus/oai:eprints.vu.edu.au:15329","repository":{"repo_id":"vu-aus","name":"Victoria University (Australia)","base_url":"https://vuir.vu.edu.au/cgi/oai2"},"display":{"title":"Factors influencing ammonia metabolism during prolonged exercise in man","abstract":"The studies that comprise this thesis were undertaken to obtain further information on ammonia/ammonium (NH3) metabolism during submaximal exercise and how it might be influenced by (1) exercise intensity and duration, (2) carbohydrate ingestion and (3) branched-chain amino acid (BCAA) feeding. A total of 25 subjects participated in these three studies. The first study utilised active, untrained subjects who cycled at approximately 38 and 70% peak oxygen consumption (V02peak) for 40 min. These workrates represented low intensity (LI) and moderate intensity (MI) exercise, respectively. The other studies involved endurance trained cyclists or triathletes. The second study required subjects to cycle at approximately 65% V02peak for 120 min with, or without, the ingestion of carbohydrate. In the BCAA study, subjects cycled for 60 min at 70% V02peak with, or without, prior BCAA supplementation. In all trials blood samples were taken from a forearm vein and analysed for metabolites and insulin. Muscle biopsies were obtained at rest and during exercise. These samples were subsequently analysed for various metabolites.","abstract_html":"The studies that comprise this thesis were undertaken to obtain further information on ammonia/ammonium (NH3) metabolism during submaximal exercise and how it might be influenced by (1) exercise intensity and duration, (2) carbohydrate ingestion and (3) branched-chain amino acid (BCAA) feeding. A total of 25 subjects participated in these three studies. The first study utilised active, untrained subjects who cycled at approximately 38 and 70% peak oxygen consumption (V02peak) for 40 min. These workrates represented low intensity (LI) and moderate intensity (MI) exercise, respectively. The other studies involved endurance trained cyclists or triathletes. The second study required subjects to cycle at approximately 65% V02peak for 120 min with, or without, the ingestion of carbohydrate. In the BCAA study, subjects cycled for 60 min at 70% V02peak with, or without, prior BCAA supplementation. In all trials blood samples were taken from a forearm vein and analysed for metabolites and insulin. Muscle biopsies were obtained at rest and during exercise. These samples were subsequently analysed for various metabolites.","abstract_has_math":false,"creators":["Snow, Rodney James"],"institution":"Victoria University of Technology","degree_name":"phd","degree_level":"doctoral","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1997,"date_issued":"1997","date_published":"1997","updated_at":"2026-07-24T06:33:09Z","subjects":["1106 Human Movement and Sports Science","School of Biomedical and Health Sciences"],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Snow, Rodney James"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1997"]},{"key":"dc:date.issued","label":"Date","values":["1997"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Chemistry and Biology"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["Victoria University of Technology"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://vuir.vu.edu.au/15329/"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["doctoral"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["phd"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["1106 Human Movement and Sports Science","School of Biomedical and Health Sciences"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://vuir.vu.edu.au/15329/3/SNOW%20Rodney-thesis_nosignature.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The studies that comprise this thesis were undertaken to obtain further information on ammonia/ammonium (NH3) metabolism during submaximal exercise and how it might be influenced by (1) exercise intensity and duration, (2) carbohydrate ingestion and (3) branched-chain amino acid (BCAA) feeding. A total of 25 subjects participated in these three studies. The first study utilised active, untrained subjects who cycled at approximately 38 and 70% peak oxygen consumption (V02peak) for 40 min. These workrates represented low intensity (LI) and moderate intensity (MI) exercise, respectively. The other studies involved endurance trained cyclists or triathletes. The second study required subjects to cycle at approximately 65% V02peak for 120 min with, or without, the ingestion of carbohydrate. In the BCAA study, subjects cycled for 60 min at 70% V02peak with, or without, prior BCAA supplementation. In all trials blood samples were taken from a forearm vein and analysed for metabolites and insulin. Muscle biopsies were obtained at rest and during exercise. These samples were subsequently analysed for various metabolites."]},{"key":"dc:format","label":"Dc Format","values":["text"]},{"key":"dc:title","label":"Title","values":["Factors influencing ammonia metabolism during prolonged exercise in man"]}]}],"canonical_facts":{"dc:creator":["Snow, Rodney James"],"dc:date":["1997"],"dc:date.issued":["1997"],"dc:description.abstract":["The studies that comprise this thesis were undertaken to obtain further information on ammonia/ammonium (NH3) metabolism during submaximal exercise and how it might be influenced by (1) exercise intensity and duration, (2) carbohydrate ingestion and (3) branched-chain amino acid (BCAA) feeding. A total of 25 subjects participated in these three studies. The first study utilised active, untrained subjects who cycled at approximately 38 and 70% peak oxygen consumption (V02peak) for 40 min. These workrates represented low intensity (LI) and moderate intensity (MI) exercise, respectively. The other studies involved endurance trained cyclists or triathletes. The second study required subjects to cycle at approximately 65% V02peak for 120 min with, or without, the ingestion of carbohydrate. In the BCAA study, subjects cycled for 60 min at 70% V02peak with, or without, prior BCAA supplementation. In all trials blood samples were taken from a forearm vein and analysed for metabolites and insulin. Muscle biopsies were obtained at rest and during exercise. These samples were subsequently analysed for various metabolites."],"dc:format":["text"],"dc:identifier.uri":["https://vuir.vu.edu.au/15329/3/SNOW%20Rodney-thesis_nosignature.pdf"],"dc:language":["en"],"dc:publisher.department":["Department of Chemistry and Biology"],"dc:publisher.institution":["Victoria University of Technology"],"dc:relation.isreferencedby":["https://vuir.vu.edu.au/15329/"],"dc:subject":["1106 Human Movement and Sports Science","School of Biomedical and Health Sciences"],"dc:title":["Factors influencing ammonia metabolism during prolonged exercise in man"],"dc:type":["Thesis"],"dc:type.qualificationlevel":["doctoral"],"dc:type.qualificationname":["phd"]},"updated_at":"2026-07-24T06:33:09Z"}