PMID- 26741119
OWN - NLM
STAT- MEDLINE
DCOM- 20161213
LR  - 20161230
IS  - 1530-0315 (Electronic)
IS  - 0195-9131 (Linking)
VI  - 48
IP  - 4
DP  - 2016 Apr
TI  - Enhanced Endurance Performance by Periodization of Carbohydrate Intake: "Sleep 
      Low" Strategy.
PG  - 663-72
LID - 10.1249/MSS.0000000000000823 [doi]
AB  - PURPOSE: We investigated the effect of a chronic dietary periodization strategy 
      on endurance performance in trained athletes. METHODS: Twenty-one triathletes 
      (V O2max: 58.7 +/- 5.7 mL.min(-1).kg(-1)) were divided into two groups: a 
      "sleep-low" (SL) (n = 11) and a control (CON) group (n = 10) consumed the same 
      daily carbohydrate (CHO) intake (6 g.kg(-1).d(-1)) but with different timing over 
      the day to manipulate CHO availability before and after training sessions. The SL 
      strategy consisted of a 3-wk training-diet intervention comprising three blocks 
      of diet-exercise manipulations: 1) "train-high" interval training sessions in the 
      evening with high-CHO availability, 2) overnight CHO restriction 
      ("sleeping-low"), and 3) "train-low" sessions with low endogenous and exogenous 
      CHO availability. The CON group followed the same training program but with high 
      CHO availability throughout training sessions (no CHO restriction overnight, 
      training sessions with exogenous CHO provision). RESULTS: There was a significant 
      improvement in delta efficiency during submaximal cycling for SL versus CON (CON, 
      +1.4% +/- 9.3%; SL, +11% +/- 15%, P < 0.05). SL also improved supramaximal cycling to 
      exhaustion at 150% of peak aerobic power (CON, +1.63% +/- 12.4%; SL, +12.5% +/- 
      19.0%; P = 0.06) and 10-km running performance (CON, -0.10% +/- 2.03%; SL, -2.9% +/- 
      2.15%; P < 0.05). Fat mass was decreased in SL (CON, -2.6 +/- 7.4; SL, -8.5% +/- 7.4% 
      before; P < 0.01), but not lean mass (CON, -0.22 +/- 1.0; SL, -0.16% +/- 1.7% PRE). 
      CONCLUSION: Short-term periodization of dietary CHO availability around selected 
      training sessions promoted significant improvements in submaximal cycling 
      economy, as well as supramaximal cycling capacity and 10-km running time in 
      trained endurance athletes.
FAU - Marquet, Laurie-Anne
AU  - Marquet LA
AD  - 1French National Institute of Sport, Expertise and Performance (INSEP), 
      Laboratory of Sport, Expertise and Performance, Paris, FRANCE; 2University of 
      Nice Sophia-Antipolis, Laboratory of Human Motricity, Education, Sport and 
      Health, Nice, FRANCE; 3Sports Nutrition, Australian Institute of Sport (AIS), 
      Belconnen, AUSTRALIA; 4Mary MacKillop Institute for Health Research, Centre for 
      Exercise and Nutrition, Australian Catholic University, Melbourne, Victoria, 
      AUSTRALIA; 5Research Institute for Sport and Exercise Sciences, Liverpool John 
      Moores University, Liverpool, UNITED KINGDOM.
FAU - Brisswalter, Jeanick
AU  - Brisswalter J
FAU - Louis, Julien
AU  - Louis J
FAU - Tiollier, Eve
AU  - Tiollier E
FAU - Burke, Louise M
AU  - Burke LM
FAU - Hawley, John A
AU  - Hawley JA
FAU - Hausswirth, Christophe
AU  - Hausswirth C
LA  - eng
PT  - Journal Article
PT  - Randomized Controlled Trial
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Med Sci Sports Exerc
JT  - Medicine and science in sports and exercise
JID - 8005433
RN  - 0 (Dietary Carbohydrates)
SB  - IM
CIN - Med Sci Sports Exerc. 2017 Nov;49(11):2366. PMID: 29040240
MH  - Adult
MH  - Athletes
MH  - Bicycling/physiology
MH  - Body Composition
MH  - *Diet
MH  - Dietary Carbohydrates/*administration & dosage
MH  - Exercise Test
MH  - Feeding Behavior/*physiology
MH  - Humans
MH  - Male
MH  - Meals
MH  - Periodicity
MH  - Physical Endurance/*physiology
MH  - Running/physiology
MH  - *Sports Nutritional Physiological Phenomena
EDAT- 2016/01/08 06:00
MHDA- 2016/12/15 06:00
CRDT- 2016/01/08 06:00
PHST- 2016/01/08 06:00 [entrez]
PHST- 2016/01/08 06:00 [pubmed]
PHST- 2016/12/15 06:00 [medline]
AID - 10.1249/MSS.0000000000000823 [doi]
PST - ppublish
SO  - Med Sci Sports Exerc. 2016 Apr;48(4):663-72. doi: 10.1249/MSS.0000000000000823.