PMID- 9029236
OWN - NLM
STAT- MEDLINE
DCOM- 19970428
LR  - 20171213
IS  - 8750-7587 (Print)
IS  - 0161-7567 (Linking)
VI  - 82
IP  - 1
DP  - 1997 Jan
TI  - Persistence of supercompensated muscle glycogen in trained subjects after 
      carbohydrate loading.
PG  - 342-7
AB  - Several carbohydrate (CHO)-loading protocols have been used to achieve muscle 
      glycogen supercompensation and prolong endurance performance. This study assessed 
      the persistence of muscle glycogen supercompensation over the 3 days after the 
      supercompensation protocol. Trained male athletes completed a 6-day CHO-loading 
      protocol that included cycle ergometer exercise and dietary manipulations. The 
      3-day depletion phase began with 115 min of cycling at 75% peak oxygen uptake 
      followed by 3 x 60-s sprints and included the subjects consuming a 
      low-CHO/high-protein/high-fat (10:41:49%) diet. Subjects cycled 40 min at the 
      same intensity for the next 2 days. During the 3-day repletion phase, subjects 
      rested and consumed a high-CHO/low-protein/low-fat (85:08:07%) diet, including a 
      glucose-polymer beverage. A 3-day postloading phase followed, which involved a 
      moderately high CHO diet (60%) and no exercise. Glycogen values for vastus 
      lateralis biopsies at baseline and postloading days 1-3 were 408 +/- 168 (SD), 
      729 +/- 222, 648 +/- 186, and 714 +/- 196 mmol/kg dry wt, respectively. The 
      CHO-loading protocol increased muscle glycogen by 1.79 times baseline, and muscle 
      glycogen remained near this level during the 3-day postloading period. Results 
      indicate that supercompensated muscle glycogen levels can be maintained for at 
      least 3 days in a resting athlete when a moderate-CHO diet is consumed.
FAU - Goforth, H W Jr
AU  - Goforth HW Jr
AD  - Human Performance Department, Naval Health Research Center, San Diego, California 
      92186-5122, USA.
FAU - Arnall, D A
AU  - Arnall DA
FAU - Bennett, B L
AU  - Bennett BL
FAU - Law, P G
AU  - Law PG
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PL  - United States
TA  - J Appl Physiol (1985)
JT  - Journal of applied physiology (Bethesda, Md. : 1985)
JID - 8502536
RN  - 0 (Dietary Carbohydrates)
RN  - 9005-79-2 (Glycogen)
SB  - IM
MH  - Adult
MH  - Dietary Carbohydrates/*metabolism
MH  - Exercise/*physiology
MH  - Glycogen/*metabolism
MH  - Humans
MH  - Male
MH  - Muscle, Skeletal/*metabolism
EDAT- 1997/01/01 00:00
MHDA- 2001/03/28 10:01
CRDT- 1997/01/01 00:00
PHST- 1997/01/01 00:00 [pubmed]
PHST- 2001/03/28 10:01 [medline]
PHST- 1997/01/01 00:00 [entrez]
AID - 10.1152/jappl.1997.82.1.342 [doi]
PST - ppublish
SO  - J Appl Physiol (1985). 1997 Jan;82(1):342-7. doi: 10.1152/jappl.1997.82.1.342.