PMID- 33414865
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210111
IS  - 1939-795X (Print)
IS  - 1939-795X (Electronic)
IS  - 1939-795X (Linking)
VI  - 13
IP  - 2
DP  - 2020
TI  - Pre-Exercise Maltodextrin Ingestion and Transient Hypoglycemia in Cycling and 
      Running.
PG  - 1691-1704
AB  - This study examined the phenomenon of transient hypoglycemia and metabolic 
      responses to pre-exercise carbohydrate (CHO) maltodextrin ingestion in cycling 
      and running on the same individuals. Eleven active males cycled or ran for 30 min 
      at 80% maximal heart rate (HRmax) after ingestion of either 1g/kg body mass 
      maltodextrin (CHO-Cycle and CHO-Run respectively) or placebo (PL-Cycle and 
      PL-Run) solutions. Fluids were ingested 30min before exercise in a double-blind 
      and random manner. Blood glucose and serum insulin were higher before exercise in 
      CHO (mean CHO-Cycle+CHO-Run) (Glucose: 7.4 +/- 0.3 mmol.l(-1); Insulin: 59 +/- 10 
      mU.l(-1)) compared to placebo (mean PL-Cycle+PL-Run) (Glucose: 4.7 +/- 0.1 
      mmol.l(-1); Insulin: 8 +/- 1 mU.l(-1)) (p<0.01), but no differences were observed 
      during exercise among the 4 conditions. Mean blood glucose did not drop below 4.1 
      mmol.l(-1) in any trial. However, six volunteers in CHO-Cycle and seven in 
      CHO-Run experienced blood glucose concentration </= 3.5 mmol.l(-1) at 20min of 
      exercise and similar degree of transient hypoglycemia in both exercise modes. No 
      association was found between insulin response to maltodextrin ingestion and drop 
      in blood glucose during exercise. Blood lactate increased with exercise more in 
      cycling compared to running, and plasma free fatty acids (FFA) concentrations 
      were higher in placebo compared to CHO irrespective of exercise mode (p<0.01). 
      The ingestion of maltodextrin 30min before exercise at about 80% HRmax produced 
      similar glucose and insulin responses in cycling and running in active males. 
      Lactate was higher in cycling, whereas maltodextrin reduced FFA concentrations 
      independently of exercise mode.
FAU - Chryssanthopoulos, Costas
AU  - Chryssanthopoulos C
AD  - Department of Physiology, Medical School, National and Kapodistrian University of 
      Athens, Athens, GREECE.
FAU - Tzeravini, Evangelia
AU  - Tzeravini E
AD  - First Department of Propaedeutic Medicine, Medical School, Laiko General 
      Hospital, National and Kapodistrian University of Athens, Athens, GREECE.
FAU - Zachrogiannis, Elias
AU  - Zachrogiannis E
AD  - Faculty of Physical Education and Sports Science, National and Kapodistrian 
      University of Athens, Dafni, GREECE.
FAU - Megalou, Maria
AU  - Megalou M
AD  - Biomedicine, Diagnostic, and Research Laboratories, Marousi, GREECE.
FAU - Kokkinos, Alexander
AU  - Kokkinos A
AD  - First Department of Propaedeutic Medicine, Medical School, Laiko General 
      Hospital, National and Kapodistrian University of Athens, Athens, GREECE.
FAU - Maridaki, Maria
AU  - Maridaki M
AD  - Faculty of Physical Education and Sports Science, National and Kapodistrian 
      University of Athens, Dafni, GREECE.
FAU - Dimitriadis, George
AU  - Dimitriadis G
AD  - Second Department of Internal Medicine-Research Institute and Diabetes Center, 
      "Attikon" University Hospital, Medical School, National and Kapodistrian 
      University of Athens, Chaidari, GREECE.
FAU - Alexandrou, Michaella
AU  - Alexandrou M
AD  - Department of Physiology, Medical School, National and Kapodistrian University of 
      Athens, Athens, GREECE.
FAU - Kontrafouri, Chrysoula
AU  - Kontrafouri C
AD  - Department of Physiology, Medical School, National and Kapodistrian University of 
      Athens, Athens, GREECE.
FAU - Papafilippou, Damianos
AU  - Papafilippou D
AD  - Department of Physiology, Medical School, National and Kapodistrian University of 
      Athens, Athens, GREECE.
FAU - Pountoukidou, Argyro
AU  - Pountoukidou A
AD  - Department of Physiology, Medical School, National and Kapodistrian University of 
      Athens, Athens, GREECE.
FAU - Tsolaki, Effraimia
AU  - Tsolaki E
AD  - Department of Physiology, Medical School, National and Kapodistrian University of 
      Athens, Athens, GREECE.
FAU - Koloutsou, Maria Evangelia
AU  - Koloutsou ME
AD  - Department of Physiology, Medical School, National and Kapodistrian University of 
      Athens, Athens, GREECE.
FAU - Zacharodimos, Nikolaos
AU  - Zacharodimos N
AD  - Department of Physiology, Medical School, National and Kapodistrian University of 
      Athens, Athens, GREECE.
FAU - Koutsilieris, Michael
AU  - Koutsilieris M
AD  - Department of Physiology, Medical School, National and Kapodistrian University of 
      Athens, Athens, GREECE.
FAU - Philippou, Anastassios
AU  - Philippou A
AD  - Department of Physiology, Medical School, National and Kapodistrian University of 
      Athens, Athens, GREECE.
LA  - eng
PT  - Journal Article
DEP - 20201201
PL  - United States
TA  - Int J Exerc Sci
JT  - International journal of exercise science
JID - 101513127
PMC - PMC7745896
OTO - NOTNLM
OT  - Mode of exercise
OT  - carbohydrate
OT  - glucose
OT  - insulin
OT  - supplementation
EDAT- 2021/01/09 06:00
MHDA- 2021/01/09 06:01
PMCR- 2020/12/01
CRDT- 2021/01/08 06:11
PHST- 2021/01/08 06:11 [entrez]
PHST- 2021/01/09 06:00 [pubmed]
PHST- 2021/01/09 06:01 [medline]
PHST- 2020/12/01 00:00 [pmc-release]
AID - ijes-13-2-1691 [pii]
PST - epublish
SO  - Int J Exerc Sci. 2020 Dec 1;13(2):1691-1704. eCollection 2020.