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Effect of sago starch paste ingestion during steady-state cycling on subsequent time-real performance

This study was undertaken to determine the effects of ingesting a specific form of a sago starch preparation before and during prolonged steady state cycling exercise in the heat on subsequent time-trial performance. Fifteen, heat acclimatised recreational cyclists completed two separate, randomi...

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Main Author: Chen Chee, Keong
Format: Monograph
Language:English
Published: Pusat Pengajian Sains Perubatan 2012
Subjects:
R Medicine
Online Access:http://eprints.usm.my/55379/1/DR.%20CHEN%20CHEE%20KEONG%20-%20e.pdf
http://eprints.usm.my/55379/
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spelling my.usm.eprints.55379 http://eprints.usm.my/55379/ Effect of sago starch paste ingestion during steady-state cycling on subsequent time-real performance Chen Chee, Keong R Medicine This study was undertaken to determine the effects of ingesting a specific form of a sago starch preparation before and during prolonged steady state cycling exercise in the heat on subsequent time-trial performance. Fifteen, heat acclimatised recreational cyclists completed two separate, randomised trials of 90 minutes cycling at 60% of VOzmax. followed by a 15-min performance ride in a temperature and humidity controlled chamber maintained at - 31°C and a relative humidity of -70%. Pre-exercise feedings consisted of sago starch paste (SBEx) amounting to 0.75g carbohydrate (CHO/kg body weight or a similarly flavoured, coloured and textured placebo (PBEx). During the steady state ride, subjects either consumed liquid sago starch paste supplying 15g CHO (SDEx) or a placebo (PBDex) at 20-minute intervals. To promote thermoregulation, subjects were fan cooled throughout both exercise periods. Core body temperatures were measured and recorded at 10-minute intervals during the steady-state ride and on completion of the performance ride. The amount of work produced in kilojoules (kJ) during the performance ride was taken as a measure of performance. Results indicated that the SBExSDEx trial produced significantly higher mean work output during the performance ride (146.9±21.5kJ or 33.2% improvement, p<0.001) compared to the PBExPDEx trial (110.3±26.2 kJ). Core body temperatures prior to exercise were similar for both trials (p=0.45) but at completion of the steady state ride, it was significantly higher during the PBExPDEx trial (38.4±0.4°C) compared to the SBExSDEx trial (38.1°C,p=0.001). Similarly, core body temperature at the end of the time-trial was significantly higher during the PBExPDEx trial (38.5±0.4°C) compare to SBExSDEx trial (38.3±0.3°C),p=0.017). This present study indicated that sago starch paste feedings before and during prolonged sub-maximal exercise can improve time-trial performance while at the same time attenuating the rise in core body temperature. Pusat Pengajian Sains Perubatan 2012 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/55379/1/DR.%20CHEN%20CHEE%20KEONG%20-%20e.pdf Chen Chee, Keong (2012) Effect of sago starch paste ingestion during steady-state cycling on subsequent time-real performance. Other. Pusat Pengajian Sains Perubatan. (Submitted)
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic R Medicine
spellingShingle R Medicine
Chen Chee, Keong
Effect of sago starch paste ingestion during steady-state cycling on subsequent time-real performance
description This study was undertaken to determine the effects of ingesting a specific form of a sago starch preparation before and during prolonged steady state cycling exercise in the heat on subsequent time-trial performance. Fifteen, heat acclimatised recreational cyclists completed two separate, randomised trials of 90 minutes cycling at 60% of VOzmax. followed by a 15-min performance ride in a temperature and humidity controlled chamber maintained at - 31°C and a relative humidity of -70%. Pre-exercise feedings consisted of sago starch paste (SBEx) amounting to 0.75g carbohydrate (CHO/kg body weight or a similarly flavoured, coloured and textured placebo (PBEx). During the steady state ride, subjects either consumed liquid sago starch paste supplying 15g CHO (SDEx) or a placebo (PBDex) at 20-minute intervals. To promote thermoregulation, subjects were fan cooled throughout both exercise periods. Core body temperatures were measured and recorded at 10-minute intervals during the steady-state ride and on completion of the performance ride. The amount of work produced in kilojoules (kJ) during the performance ride was taken as a measure of performance. Results indicated that the SBExSDEx trial produced significantly higher mean work output during the performance ride (146.9±21.5kJ or 33.2% improvement, p<0.001) compared to the PBExPDEx trial (110.3±26.2 kJ). Core body temperatures prior to exercise were similar for both trials (p=0.45) but at completion of the steady state ride, it was significantly higher during the PBExPDEx trial (38.4±0.4°C) compared to the SBExSDEx trial (38.1°C,p=0.001). Similarly, core body temperature at the end of the time-trial was significantly higher during the PBExPDEx trial (38.5±0.4°C) compare to SBExSDEx trial (38.3±0.3°C),p=0.017). This present study indicated that sago starch paste feedings before and during prolonged sub-maximal exercise can improve time-trial performance while at the same time attenuating the rise in core body temperature.
format Monograph
author Chen Chee, Keong
author_facet Chen Chee, Keong
author_sort Chen Chee, Keong
title Effect of sago starch paste ingestion during steady-state cycling on subsequent time-real performance
title_short Effect of sago starch paste ingestion during steady-state cycling on subsequent time-real performance
title_full Effect of sago starch paste ingestion during steady-state cycling on subsequent time-real performance
title_fullStr Effect of sago starch paste ingestion during steady-state cycling on subsequent time-real performance
title_full_unstemmed Effect of sago starch paste ingestion during steady-state cycling on subsequent time-real performance
title_sort effect of sago starch paste ingestion during steady-state cycling on subsequent time-real performance
publisher Pusat Pengajian Sains Perubatan
publishDate 2012
url http://eprints.usm.my/55379/1/DR.%20CHEN%20CHEE%20KEONG%20-%20e.pdf
http://eprints.usm.my/55379/
_version_ 1748181591849435136
score 13.211869

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