{"id":{"repo_id":"hull","oai_identifier":"oai:hull-repository.worktribe.com:4213627"},"canonical_url":"https://search.dev.ndltd.org/etd/hull/oai:hull-repository.worktribe.com:4213627","repository":{"repo_id":"hull","name":"University of Hull","base_url":"https://hull-repository.worktribe.com/oaiprovider"},"display":{"title":"The effects of carbohydrate and protein hydrolysate co-ingestion upon exercise metabolism and cycling performance","abstract":"The ergogenic effects of acute carbohydrate (CHO) supplementation during prolonged exercise are well established. Recently, a number of studies have examined the potential for the inclusion of protein to further augment these efficacious effects. However, observations at present remain equivocal. Furthermore, there is currently a dearth of knowledge regarding the potential physiologic influences of specific protein sources. Therefore, the purpose of the current study was to determine the efficacy of adding whey protein (CHO-PRO) and hydrolysed marine peptides (CHO-PRO-PEP) to a CHO solution when compared to an equally energetic CHO only beverage. Following an initial familiarisation, 12 recreationally active male volunteers performed three randomised, double blind trials. The trials consisted of a 90-minute steady-state cycle preload corresponding to 50% of predetermined maximal power output, followed by a 5 km time-trial. From the onset of exercise and at 15-minute intervals during the initial preload, participants ingested 180 ml of either: CHO (67 g.hr¯¹ of maltodextrin); CHO-PRO (53.1 g.hr¯¹ of maltodextrin, 13.6 g.hr¯¹ of whey protein concentrate) or CHO-PRO-PEP (53.1 g.hr¯¹ of maltodextrin, 11.0 g.hr¯¹ of whey protein concentrate and 2.4 g.hr¯¹ of protein hydrolysate extracted from salmon). Physiological measures including heart rate, blood glucose and blood lactate were also acquired at 15-minute intervals concomitant to expired gas analysis. No significant differences were observed in time-to-complete the 5 km time-trial regardless of the solution ingested (455.49 ± 16.10; 455.57 ± 18.09 and 454.83 ± 20.75 seconds for CHO, CHO-PRO and CHO-PRO-PEP respectively, p = 0.97). Average and peak power output also demonstrated no statistical significance between treatments (p = 0.71 and p = 0.44, respectively). Conversely, significant interaction effects (condition × time) were apparent for both blood lactate (p = 0.02) and the respiratory exchange ratio (p = 0.007). Heart rate also demonstrated a significant main effect for condition (p = 0.047). No other physiological parameters were significantly different between conditions. This data therefore suggests that CHO-PRO and CHO-PRO-PEP supplementation provide no additional performance enhancing effects in comparison to a typical CHO only solution. However, the inclusion of protein from marine sources within a CHO solution may influence substrate utilisation during prolonged steady-state exercise.","abstract_html":"The ergogenic effects of acute carbohydrate (CHO) supplementation during prolonged exercise are well established. Recently, a number of studies have examined the potential for the inclusion of protein to further augment these efficacious effects. However, observations at present remain equivocal. Furthermore, there is currently a dearth of knowledge regarding the potential physiologic influences of specific protein sources. Therefore, the purpose of the current study was to determine the efficacy of adding whey protein (CHO-PRO) and hydrolysed marine peptides (CHO-PRO-PEP) to a CHO solution when compared to an equally energetic CHO only beverage. Following an initial familiarisation, 12 recreationally active male volunteers performed three randomised, double blind trials. The trials consisted of a 90-minute steady-state cycle preload corresponding to 50% of predetermined maximal power output, followed by a 5 km time-trial. From the onset of exercise and at 15-minute intervals during the initial preload, participants ingested 180 ml of either: CHO (67 g.hr¯¹ of maltodextrin); CHO-PRO (53.1 g.hr¯¹ of maltodextrin, 13.6 g.hr¯¹ of whey protein concentrate) or CHO-PRO-PEP (53.1 g.hr¯¹ of maltodextrin, 11.0 g.hr¯¹ of whey protein concentrate and 2.4 g.hr¯¹ of protein hydrolysate extracted from salmon). Physiological measures including heart rate, blood glucose and blood lactate were also acquired at 15-minute intervals concomitant to expired gas analysis. No significant differences were observed in time-to-complete the 5 km time-trial regardless of the solution ingested (455.49 ± 16.10; 455.57 ± 18.09 and 454.83 ± 20.75 seconds for CHO, CHO-PRO and CHO-PRO-PEP respectively, p = 0.97). Average and peak power output also demonstrated no statistical significance between treatments (p = 0.71 and p = 0.44, respectively). Conversely, significant interaction effects (condition × time) were apparent for both blood lactate (p = 0.02) and the respiratory exchange ratio (p = 0.007). Heart rate also demonstrated a significant main effect for condition (p = 0.047). No other physiological parameters were significantly different between conditions. This data therefore suggests that CHO-PRO and CHO-PRO-PEP supplementation provide no additional performance enhancing effects in comparison to a typical CHO only solution. However, the inclusion of protein from marine sources within a CHO solution may influence substrate utilisation during prolonged steady-state exercise.","abstract_has_math":false,"creators":["Page, Richard"],"institution":"University of Hull","degree_name":"MSc","degree_level":"Masters","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Siegler, Jason","Midgley, Adrian Wayne"],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012","date_published":"2012","updated_at":"2026-07-24T02:33:37Z","subjects":["Sport science"],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["oai:hull-repository.worktribe.com:4213627"],"render_values":[{"text":"oai:hull-repository.worktribe.com:4213627","href":null,"code":true}]}]},"links":{"outbound_url":"https://hull-repository.worktribe.com/4213627/1/Thesis","outbound_label":"Repository record","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Siegler, Jason","Midgley, Adrian Wayne"]},{"key":"dc:creator","label":"Author","values":["Page, Richard"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2012-04-01"]},{"key":"dc:date.issued","label":"Date","values":["2012"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Hull"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://hull-repository.worktribe.com/output/4213627"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Masters"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["MSc"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Sport science"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["oai:hull-repository.worktribe.com:4213627"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hull-repository.worktribe.com/4213627/1/Thesis"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The ergogenic effects of acute carbohydrate (CHO) supplementation during prolonged exercise are well established. Recently, a number of studies have examined the potential for the inclusion of protein to further augment these efficacious effects. However, observations at present remain equivocal. Furthermore, there is currently a dearth of knowledge regarding the potential physiologic influences of specific protein sources. Therefore, the purpose of the current study was to determine the efficacy of adding whey protein (CHO-PRO) and hydrolysed marine peptides (CHO-PRO-PEP) to a CHO solution when compared to an equally energetic CHO only beverage. Following an initial familiarisation, 12 recreationally active male volunteers performed three randomised, double blind trials. The trials consisted of a 90-minute steady-state cycle preload corresponding to 50% of predetermined maximal power output, followed by a 5 km time-trial. From the onset of exercise and at 15-minute intervals during the initial preload, participants ingested 180 ml of either: CHO (67 g.hr¯¹ of maltodextrin); CHO-PRO (53.1 g.hr¯¹ of maltodextrin, 13.6 g.hr¯¹ of whey protein concentrate) or CHO-PRO-PEP (53.1 g.hr¯¹ of maltodextrin, 11.0 g.hr¯¹ of whey protein concentrate and 2.4 g.hr¯¹ of protein hydrolysate extracted from salmon). Physiological measures including heart rate, blood glucose and blood lactate were also acquired at 15-minute intervals concomitant to expired gas analysis. No significant differences were observed in time-to-complete the 5 km time-trial regardless of the solution ingested (455.49 ± 16.10; 455.57 ± 18.09 and 454.83 ± 20.75 seconds for CHO, CHO-PRO and CHO-PRO-PEP respectively, p = 0.97). Average and peak power output also demonstrated no statistical significance between treatments (p = 0.71 and p = 0.44, respectively). Conversely, significant interaction effects (condition × time) were apparent for both blood lactate (p = 0.02) and the respiratory exchange ratio (p = 0.007). Heart rate also demonstrated a significant main effect for condition (p = 0.047). No other physiological parameters were significantly different between conditions. This data therefore suggests that CHO-PRO and CHO-PRO-PEP supplementation provide no additional performance enhancing effects in comparison to a typical CHO only solution. However, the inclusion of protein from marine sources within a CHO solution may influence substrate utilisation during prolonged steady-state exercise."]},{"key":"dc:title","label":"Title","values":["The effects of carbohydrate and protein hydrolysate co-ingestion upon exercise metabolism and cycling performance"]}]}],"canonical_facts":{"dc:contributor.advisor":["Siegler, Jason","Midgley, Adrian Wayne"],"dc:creator":["Page, Richard"],"dc:date":["2012-04-01"],"dc:date.issued":["2012"],"dc:description.abstract":["The ergogenic effects of acute carbohydrate (CHO) supplementation during prolonged exercise are well established. Recently, a number of studies have examined the potential for the inclusion of protein to further augment these efficacious effects. However, observations at present remain equivocal. Furthermore, there is currently a dearth of knowledge regarding the potential physiologic influences of specific protein sources. Therefore, the purpose of the current study was to determine the efficacy of adding whey protein (CHO-PRO) and hydrolysed marine peptides (CHO-PRO-PEP) to a CHO solution when compared to an equally energetic CHO only beverage. Following an initial familiarisation, 12 recreationally active male volunteers performed three randomised, double blind trials. The trials consisted of a 90-minute steady-state cycle preload corresponding to 50% of predetermined maximal power output, followed by a 5 km time-trial. From the onset of exercise and at 15-minute intervals during the initial preload, participants ingested 180 ml of either: CHO (67 g.hr¯¹ of maltodextrin); CHO-PRO (53.1 g.hr¯¹ of maltodextrin, 13.6 g.hr¯¹ of whey protein concentrate) or CHO-PRO-PEP (53.1 g.hr¯¹ of maltodextrin, 11.0 g.hr¯¹ of whey protein concentrate and 2.4 g.hr¯¹ of protein hydrolysate extracted from salmon). Physiological measures including heart rate, blood glucose and blood lactate were also acquired at 15-minute intervals concomitant to expired gas analysis. No significant differences were observed in time-to-complete the 5 km time-trial regardless of the solution ingested (455.49 ± 16.10; 455.57 ± 18.09 and 454.83 ± 20.75 seconds for CHO, CHO-PRO and CHO-PRO-PEP respectively, p = 0.97). Average and peak power output also demonstrated no statistical significance between treatments (p = 0.71 and p = 0.44, respectively). Conversely, significant interaction effects (condition × time) were apparent for both blood lactate (p = 0.02) and the respiratory exchange ratio (p = 0.007). Heart rate also demonstrated a significant main effect for condition (p = 0.047). No other physiological parameters were significantly different between conditions. This data therefore suggests that CHO-PRO and CHO-PRO-PEP supplementation provide no additional performance enhancing effects in comparison to a typical CHO only solution. However, the inclusion of protein from marine sources within a CHO solution may influence substrate utilisation during prolonged steady-state exercise."],"dc:identifier":["oai:hull-repository.worktribe.com:4213627"],"dc:identifier.uri":["https://hull-repository.worktribe.com/4213627/1/Thesis"],"dc:language":["en"],"dc:publisher.institution":["University of Hull"],"dc:relation.isreferencedby":["https://hull-repository.worktribe.com/output/4213627"],"dc:subject":["Sport science"],"dc:title":["The effects of carbohydrate and protein hydrolysate co-ingestion upon exercise metabolism and cycling performance"],"dc:type":["Thesis"],"dc:type.qualificationlevel":["Masters"],"dc:type.qualificationname":["MSc"]},"updated_at":"2026-07-24T02:33:37Z"}