PMID- 32023540
OWN - NLM
STAT- Publisher
LR  - 20240227
IS  - 1543-2742 (Electronic)
IS  - 1526-484X (Linking)
VI  - 30
IP  - 2
DP  - 2020 Mar 1
TI  - Perception of Carbohydrate Availability Augments High-Intensity Intermittent 
      Exercise Capacity Under Sleep-Low, Train-Low Conditions.
PG  - 105-111
LID - ijsnem.2019-0275 [pii]
LID - 10.1123/ijsnem.2019-0275 [doi]
AB  - The authors tested the hypothesis that perception of carbohydrate (CHO) 
      availability augments exercise capacity in conditions of reduced CHO 
      availability. Nine males completed a sleep-low train model comprising evening 
      glycogen-depleting cycling followed by an exhaustive cycling protocol the next 
      morning in the fasted state (30 min steady state at 95% lactate threshold 
      followed by 1-min intervals at 80% peak power output until exhaustion). After the 
      evening depletion protocol and prior to sleeping, subjects consumed (a) a known 
      CHO intake of 6 g/kg body mass (TRAIN HIGH) or (b) a perceived comparable CHO 
      intake but 0 g/kg body mass (PERCEPTION) or a known train-low condition of 0 g/kg 
      body mass (TRAIN LOW). The TRAIN HIGH and PERCEPTION trials were conducted double 
      blind. During steady state, average blood glucose and CHO oxidation were 
      significantly higher in TRAIN HIGH (4.01 +/- 0.56 mmol/L; 2.17 +/- 0.70 g/min) versus 
      both PERCEPTION (3.30 +/- 0.57 mmol/L; 1.69 +/- 0.64 g/min, p < .05) and TRAIN LOW 
      (3.41 +/- 0.74 mmol/L; 1.61 +/- 0.59 g/min, p < .05). Exercise capacity was 
      significantly different between all pairwise comparisons (p < .05), where TRAIN 
      LOW (8 +/- 8 min) < PERCEPTION (12 +/- 6 min) < TRAIN HIGH (22 +/- 9 min). Data 
      demonstrate that perception of CHO availability augments high-intensity 
      intermittent exercise capacity under sleep-low, train-low conditions, though this 
      perception does not restore exercise capacity to that of CHO consumption. Such 
      data have methodological implications for future research designs and may also 
      have practical applications for athletes who deliberately practice elements of 
      training in CHO-restricted states.
FAU - Waterworth, Sally P
AU  - Waterworth SP
AD  - University of Essex.
FAU - Spencer, Connor C
AU  - Spencer CC
AD  - Liverpool John Moores University.
FAU - Porter, Aaron L
AU  - Porter AL
AD  - Liverpool John Moores University.
FAU - Morton, James P
AU  - Morton JP
AD  - Liverpool John Moores University.
LA  - eng
PT  - Journal Article
DEP - 20200301
PL  - United States
TA  - Int J Sport Nutr Exerc Metab
JT  - International journal of sport nutrition and exercise metabolism
JID - 100939812
SB  - IM
OTO - NOTNLM
OT  - CHO restriction
OT  - fatigue
OT  - glycogen
OT  - placebo
EDAT- 2020/02/06 06:00
MHDA- 2020/02/06 06:00
CRDT- 2020/02/06 06:00
PHST- 2019/09/23 00:00 [received]
PHST- 2019/11/27 00:00 [revised]
PHST- 2019/12/23 00:00 [accepted]
PHST- 2020/02/06 06:00 [entrez]
PHST- 2020/02/06 06:00 [pubmed]
PHST- 2020/02/06 06:00 [medline]
AID - ijsnem.2019-0275 [pii]
AID - 10.1123/ijsnem.2019-0275 [doi]
PST - aheadofprint
SO  - Int J Sport Nutr Exerc Metab. 2020 Mar 1;30(2):105-111. doi: 
      10.1123/ijsnem.2019-0275.