Cargando…

Pre-Sleep Low Glycemic Index Modified Starch Does Not Improve Next-Morning Fuel Selection or Running Performance in Male and Female Endurance Athletes

To determine the effects of pre-sleep supplementation with a novel low glycemic index (LGI) carbohydrate (CHO) on next-morning substrate utilization, gastrointestinal distress (GID), and endurance running performance (5-km time-trial, TT). Using a double-blind, randomized, placebo (PLA) controlled,...

Descripción completa

Detalles Bibliográficos
Autores principales: Dudar, Monique D., Bode, Emilie D., Fishkin, Karly R., Brown, Rochelle A., Carre, Madeleine M., Mills, Noa R., Ormsbee, Michael J., Ives, Stephen J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7551949/
https://www.ncbi.nlm.nih.gov/pubmed/32971774
http://dx.doi.org/10.3390/nu12092888
_version_ 1783593293111623680
author Dudar, Monique D.
Bode, Emilie D.
Fishkin, Karly R.
Brown, Rochelle A.
Carre, Madeleine M.
Mills, Noa R.
Ormsbee, Michael J.
Ives, Stephen J.
author_facet Dudar, Monique D.
Bode, Emilie D.
Fishkin, Karly R.
Brown, Rochelle A.
Carre, Madeleine M.
Mills, Noa R.
Ormsbee, Michael J.
Ives, Stephen J.
author_sort Dudar, Monique D.
collection PubMed
description To determine the effects of pre-sleep supplementation with a novel low glycemic index (LGI) carbohydrate (CHO) on next-morning substrate utilization, gastrointestinal distress (GID), and endurance running performance (5-km time-trial, TT). Using a double-blind, randomized, placebo (PLA) controlled, crossover design, trained participants (n = 14; 28 ± 9 years, 8/6 male/female, 55 ± 7 mL/kg/min) consumed a LGI, high glycemic index (HGI), or 0 kcal PLA supplement ≥ 2 h after their last meal and <30 min prior to sleep. Upon arrival, resting energy expenditure (REE), substrate utilization, blood glucose, satiety, and GID were assessed. An incremental exercise test (IET) was performed at 55, 65, and 75% peak volume of oxygen consumption (VO(2peak)) with GID, rating of perceived exertion (RPE) and substrate utilization recorded each stage. Finally, participants completed the 5-km TT. There were no differences in any baseline measure. During IET, CHO utilization tended to be greater with LGI (PLA, 56 ± 11; HGI, 60 ± 14; LGI, 63 ± 14%, p = 0.16, η(2) = 0.14). GID was unaffected by supplementation at any point (p > 0.05). Performance was also unaffected by supplement (PLA, 21.6 ± 9.5; HGI, 23.0 ± 7.8; LGI, 24.1 ± 4.5 min, p = 0.94, η(2) = 0.01). Pre-sleep CHO supplementation did not affect next-morning resting metabolism, BG, GID, or 5-km TT performance. The trend towards higher CHO utilization during IET after pre-sleep LGI, suggests that such supplementation increases morning CHO availability.
format Online
Article
Text
id pubmed-7551949
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-75519492020-10-14 Pre-Sleep Low Glycemic Index Modified Starch Does Not Improve Next-Morning Fuel Selection or Running Performance in Male and Female Endurance Athletes Dudar, Monique D. Bode, Emilie D. Fishkin, Karly R. Brown, Rochelle A. Carre, Madeleine M. Mills, Noa R. Ormsbee, Michael J. Ives, Stephen J. Nutrients Article To determine the effects of pre-sleep supplementation with a novel low glycemic index (LGI) carbohydrate (CHO) on next-morning substrate utilization, gastrointestinal distress (GID), and endurance running performance (5-km time-trial, TT). Using a double-blind, randomized, placebo (PLA) controlled, crossover design, trained participants (n = 14; 28 ± 9 years, 8/6 male/female, 55 ± 7 mL/kg/min) consumed a LGI, high glycemic index (HGI), or 0 kcal PLA supplement ≥ 2 h after their last meal and <30 min prior to sleep. Upon arrival, resting energy expenditure (REE), substrate utilization, blood glucose, satiety, and GID were assessed. An incremental exercise test (IET) was performed at 55, 65, and 75% peak volume of oxygen consumption (VO(2peak)) with GID, rating of perceived exertion (RPE) and substrate utilization recorded each stage. Finally, participants completed the 5-km TT. There were no differences in any baseline measure. During IET, CHO utilization tended to be greater with LGI (PLA, 56 ± 11; HGI, 60 ± 14; LGI, 63 ± 14%, p = 0.16, η(2) = 0.14). GID was unaffected by supplementation at any point (p > 0.05). Performance was also unaffected by supplement (PLA, 21.6 ± 9.5; HGI, 23.0 ± 7.8; LGI, 24.1 ± 4.5 min, p = 0.94, η(2) = 0.01). Pre-sleep CHO supplementation did not affect next-morning resting metabolism, BG, GID, or 5-km TT performance. The trend towards higher CHO utilization during IET after pre-sleep LGI, suggests that such supplementation increases morning CHO availability. MDPI 2020-09-22 /pmc/articles/PMC7551949/ /pubmed/32971774 http://dx.doi.org/10.3390/nu12092888 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Dudar, Monique D.
Bode, Emilie D.
Fishkin, Karly R.
Brown, Rochelle A.
Carre, Madeleine M.
Mills, Noa R.
Ormsbee, Michael J.
Ives, Stephen J.
Pre-Sleep Low Glycemic Index Modified Starch Does Not Improve Next-Morning Fuel Selection or Running Performance in Male and Female Endurance Athletes
title Pre-Sleep Low Glycemic Index Modified Starch Does Not Improve Next-Morning Fuel Selection or Running Performance in Male and Female Endurance Athletes
title_full Pre-Sleep Low Glycemic Index Modified Starch Does Not Improve Next-Morning Fuel Selection or Running Performance in Male and Female Endurance Athletes
title_fullStr Pre-Sleep Low Glycemic Index Modified Starch Does Not Improve Next-Morning Fuel Selection or Running Performance in Male and Female Endurance Athletes
title_full_unstemmed Pre-Sleep Low Glycemic Index Modified Starch Does Not Improve Next-Morning Fuel Selection or Running Performance in Male and Female Endurance Athletes
title_short Pre-Sleep Low Glycemic Index Modified Starch Does Not Improve Next-Morning Fuel Selection or Running Performance in Male and Female Endurance Athletes
title_sort pre-sleep low glycemic index modified starch does not improve next-morning fuel selection or running performance in male and female endurance athletes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7551949/
https://www.ncbi.nlm.nih.gov/pubmed/32971774
http://dx.doi.org/10.3390/nu12092888
work_keys_str_mv AT dudarmoniqued presleeplowglycemicindexmodifiedstarchdoesnotimprovenextmorningfuelselectionorrunningperformanceinmaleandfemaleenduranceathletes
AT bodeemilied presleeplowglycemicindexmodifiedstarchdoesnotimprovenextmorningfuelselectionorrunningperformanceinmaleandfemaleenduranceathletes
AT fishkinkarlyr presleeplowglycemicindexmodifiedstarchdoesnotimprovenextmorningfuelselectionorrunningperformanceinmaleandfemaleenduranceathletes
AT brownrochellea presleeplowglycemicindexmodifiedstarchdoesnotimprovenextmorningfuelselectionorrunningperformanceinmaleandfemaleenduranceathletes
AT carremadeleinem presleeplowglycemicindexmodifiedstarchdoesnotimprovenextmorningfuelselectionorrunningperformanceinmaleandfemaleenduranceathletes
AT millsnoar presleeplowglycemicindexmodifiedstarchdoesnotimprovenextmorningfuelselectionorrunningperformanceinmaleandfemaleenduranceathletes
AT ormsbeemichaelj presleeplowglycemicindexmodifiedstarchdoesnotimprovenextmorningfuelselectionorrunningperformanceinmaleandfemaleenduranceathletes
AT ivesstephenj presleeplowglycemicindexmodifiedstarchdoesnotimprovenextmorningfuelselectionorrunningperformanceinmaleandfemaleenduranceathletes