Carbohydrate supplementation stabilises plasma sodium during training with high intensity

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • M. Schrader
  • B. Treff
  • T. Sandholtet
  • Norbert Maassen
  • V. Shushakov
  • J. Kaesebieter
  • Mirja Maassen

Organisationseinheiten

Externe Organisationen

  • Medizinische Hochschule Hannover (MHH)
  • Data Input
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)1841-1853
Seitenumfang13
FachzeitschriftEuropean Journal of Applied Physiology
Jahrgang116
Ausgabenummer9
Frühes Online-Datum27 Juli 2016
PublikationsstatusVeröffentlicht - 1 Sept. 2016

Abstract

Background: Investigations of the effect of beverages containing carbohydrates, only, on the sodium and fluid balance during intermittent exercise of high intensity are rare. Therefore, we compared the effects of water and carbohydrate supplementation on plasma, blood volume, and electrolyte shifts during intermittent exercise. Methods: Ten male subjects performed an intermittent exercise test twice. In one trial, tap water (4 ml/kg/15 min) was consumed (Plac trial). In the other trial, the same amount of water supplemented with maltodextrin to achieve a 9.1 % carbohydrate solution (CHO trial) was ingested. Training schedule: warm-up at 50 % for 15 min. Afterwards, power changed between 100 % of the maximum power from a previous incremental test minus 10 and 10 W for each 30 s. Venous blood was sampled to measure electrolytes, osmolality, [protein], hct, [Lactate], [glucose], [Hb] and catecholamines. Hydration status was evaluated by BIA before and after exercise. Results: After beverage ingestion [glucose] was significantly higher in CHO until the end of the trial. Starting with similar resting values, osmolality increased significantly more during CHO (p = 0.002). PV decreased by 5 % under both conditions, but recovered partly during exercise under Plac (p = 0.002). [Na+] and [Cl] decreased with Plac during exercise (both p < 0.001) but remained constant during exercise with CHO. Conclusions: Sole carbohydrate supplementation seems to stabilise plasma [Na+]. This cannot be explained simply by a cotransport of glucose and [Na+], because that should lead to a recovery of the blood and plasma volume under CHO. In contrast, this was found during exercise with Plac.

ASJC Scopus Sachgebiete

Ziele für nachhaltige Entwicklung

Zitieren

Carbohydrate supplementation stabilises plasma sodium during training with high intensity. / Schrader, M.; Treff, B.; Sandholtet, T. et al.
in: European Journal of Applied Physiology, Jahrgang 116, Nr. 9, 01.09.2016, S. 1841-1853.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Schrader, M, Treff, B, Sandholtet, T, Maassen, N, Shushakov, V, Kaesebieter, J & Maassen, M 2016, 'Carbohydrate supplementation stabilises plasma sodium during training with high intensity', European Journal of Applied Physiology, Jg. 116, Nr. 9, S. 1841-1853. https://doi.org/10.1007/s00421-016-3429-4
Schrader, M., Treff, B., Sandholtet, T., Maassen, N., Shushakov, V., Kaesebieter, J., & Maassen, M. (2016). Carbohydrate supplementation stabilises plasma sodium during training with high intensity. European Journal of Applied Physiology, 116(9), 1841-1853. https://doi.org/10.1007/s00421-016-3429-4
Schrader M, Treff B, Sandholtet T, Maassen N, Shushakov V, Kaesebieter J et al. Carbohydrate supplementation stabilises plasma sodium during training with high intensity. European Journal of Applied Physiology. 2016 Sep 1;116(9):1841-1853. Epub 2016 Jul 27. doi: 10.1007/s00421-016-3429-4
Schrader, M. ; Treff, B. ; Sandholtet, T. et al. / Carbohydrate supplementation stabilises plasma sodium during training with high intensity. in: European Journal of Applied Physiology. 2016 ; Jahrgang 116, Nr. 9. S. 1841-1853.
Download
@article{fa283b08067f4e5283ff007fb12f304f,
title = "Carbohydrate supplementation stabilises plasma sodium during training with high intensity",
abstract = "Background: Investigations of the effect of beverages containing carbohydrates, only, on the sodium and fluid balance during intermittent exercise of high intensity are rare. Therefore, we compared the effects of water and carbohydrate supplementation on plasma, blood volume, and electrolyte shifts during intermittent exercise. Methods: Ten male subjects performed an intermittent exercise test twice. In one trial, tap water (4 ml/kg/15 min) was consumed (Plac trial). In the other trial, the same amount of water supplemented with maltodextrin to achieve a 9.1 % carbohydrate solution (CHO trial) was ingested. Training schedule: warm-up at 50 % for 15 min. Afterwards, power changed between 100 % of the maximum power from a previous incremental test minus 10 and 10 W for each 30 s. Venous blood was sampled to measure electrolytes, osmolality, [protein], hct, [Lactate], [glucose], [Hb] and catecholamines. Hydration status was evaluated by BIA before and after exercise. Results: After beverage ingestion [glucose] was significantly higher in CHO until the end of the trial. Starting with similar resting values, osmolality increased significantly more during CHO (p = 0.002). PV decreased by 5 % under both conditions, but recovered partly during exercise under Plac (p = 0.002). [Na+] and [Cl−] decreased with Plac during exercise (both p < 0.001) but remained constant during exercise with CHO. Conclusions: Sole carbohydrate supplementation seems to stabilise plasma [Na+]. This cannot be explained simply by a cotransport of glucose and [Na+], because that should lead to a recovery of the blood and plasma volume under CHO. In contrast, this was found during exercise with Plac.",
keywords = "Carbohydrate supplementation, Hydration status, Hyponatremia, Intermittent exercise",
author = "M. Schrader and B. Treff and T. Sandholtet and Norbert Maassen and V. Shushakov and J. Kaesebieter and Mirja Maassen",
note = "Publisher Copyright: {\textcopyright} 2016, Springer-Verlag Berlin Heidelberg.",
year = "2016",
month = sep,
day = "1",
doi = "10.1007/s00421-016-3429-4",
language = "English",
volume = "116",
pages = "1841--1853",
journal = "European Journal of Applied Physiology",
issn = "1439-6319",
publisher = "Springer Verlag",
number = "9",

}

Download

TY - JOUR

T1 - Carbohydrate supplementation stabilises plasma sodium during training with high intensity

AU - Schrader, M.

AU - Treff, B.

AU - Sandholtet, T.

AU - Maassen, Norbert

AU - Shushakov, V.

AU - Kaesebieter, J.

AU - Maassen, Mirja

N1 - Publisher Copyright: © 2016, Springer-Verlag Berlin Heidelberg.

PY - 2016/9/1

Y1 - 2016/9/1

N2 - Background: Investigations of the effect of beverages containing carbohydrates, only, on the sodium and fluid balance during intermittent exercise of high intensity are rare. Therefore, we compared the effects of water and carbohydrate supplementation on plasma, blood volume, and electrolyte shifts during intermittent exercise. Methods: Ten male subjects performed an intermittent exercise test twice. In one trial, tap water (4 ml/kg/15 min) was consumed (Plac trial). In the other trial, the same amount of water supplemented with maltodextrin to achieve a 9.1 % carbohydrate solution (CHO trial) was ingested. Training schedule: warm-up at 50 % for 15 min. Afterwards, power changed between 100 % of the maximum power from a previous incremental test minus 10 and 10 W for each 30 s. Venous blood was sampled to measure electrolytes, osmolality, [protein], hct, [Lactate], [glucose], [Hb] and catecholamines. Hydration status was evaluated by BIA before and after exercise. Results: After beverage ingestion [glucose] was significantly higher in CHO until the end of the trial. Starting with similar resting values, osmolality increased significantly more during CHO (p = 0.002). PV decreased by 5 % under both conditions, but recovered partly during exercise under Plac (p = 0.002). [Na+] and [Cl−] decreased with Plac during exercise (both p < 0.001) but remained constant during exercise with CHO. Conclusions: Sole carbohydrate supplementation seems to stabilise plasma [Na+]. This cannot be explained simply by a cotransport of glucose and [Na+], because that should lead to a recovery of the blood and plasma volume under CHO. In contrast, this was found during exercise with Plac.

AB - Background: Investigations of the effect of beverages containing carbohydrates, only, on the sodium and fluid balance during intermittent exercise of high intensity are rare. Therefore, we compared the effects of water and carbohydrate supplementation on plasma, blood volume, and electrolyte shifts during intermittent exercise. Methods: Ten male subjects performed an intermittent exercise test twice. In one trial, tap water (4 ml/kg/15 min) was consumed (Plac trial). In the other trial, the same amount of water supplemented with maltodextrin to achieve a 9.1 % carbohydrate solution (CHO trial) was ingested. Training schedule: warm-up at 50 % for 15 min. Afterwards, power changed between 100 % of the maximum power from a previous incremental test minus 10 and 10 W for each 30 s. Venous blood was sampled to measure electrolytes, osmolality, [protein], hct, [Lactate], [glucose], [Hb] and catecholamines. Hydration status was evaluated by BIA before and after exercise. Results: After beverage ingestion [glucose] was significantly higher in CHO until the end of the trial. Starting with similar resting values, osmolality increased significantly more during CHO (p = 0.002). PV decreased by 5 % under both conditions, but recovered partly during exercise under Plac (p = 0.002). [Na+] and [Cl−] decreased with Plac during exercise (both p < 0.001) but remained constant during exercise with CHO. Conclusions: Sole carbohydrate supplementation seems to stabilise plasma [Na+]. This cannot be explained simply by a cotransport of glucose and [Na+], because that should lead to a recovery of the blood and plasma volume under CHO. In contrast, this was found during exercise with Plac.

KW - Carbohydrate supplementation

KW - Hydration status

KW - Hyponatremia

KW - Intermittent exercise

UR - http://www.scopus.com/inward/record.url?scp=84979986523&partnerID=8YFLogxK

U2 - 10.1007/s00421-016-3429-4

DO - 10.1007/s00421-016-3429-4

M3 - Article

C2 - 27465126

AN - SCOPUS:84979986523

VL - 116

SP - 1841

EP - 1853

JO - European Journal of Applied Physiology

JF - European Journal of Applied Physiology

SN - 1439-6319

IS - 9

ER -