PMID- 37488656
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20230726
IS  - 2052-1847 (Print)
IS  - 2052-1847 (Electronic)
IS  - 2052-1847 (Linking)
VI  - 15
IP  - 1
DP  - 2023 Jul 24
TI  - Pre-exercise isomaltulose intake affects carbohydrate oxidation reduction during 
      endurance exercise and maximal power output in the subsequent Wingate test.
PG  - 89
LID - 10.1186/s13102-023-00702-7 [doi]
LID - 89
AB  - BACKGROUND: Ingestion of low-glycemic index (GI) isomaltulose (ISO) not only 
      suppresses subsequent carbohydrate (CHO) oxidation but also inversely retains 
      more CHO after prolonged endurance exercise. Therefore, ISO intake may affect 
      anaerobic power output after prolonged endurance exercise. This study aimed to 
      clarify the time course of CHO utilization during endurance exercise after a 
      single intake of ISO or sucrose (SUC) and the anaerobic power output at the end 
      of endurance exercise. METHODS: After an intake of either ISO or SUC, 13 athletes 
      were kept at rest for 60 min. Thereafter, they performed a 90-min of treadmill 
      running at their individual target level of % [Formula: see text]max. During the 
      experimental session, the expired gas was recorded, and the energy expenditure 
      (EE) and CHO oxidation rate were estimated. Immediately after 90 min of running, 
      a 30-s Wingate test was performed, and the maximal anaerobic power output was 
      compared between the ISO and SUC conditions. RESULTS: The percentage of 
      CHO-derived EE increased rapidly after CHO intake and then decreased gradually 
      throughout the experiment. The slopes of the regression lines calculated from the 
      time course in the CHO-derived EE were significantly (negatively) larger in the 
      SUC condition (-19.4 +/- 9.6 [%/h]) than in the ISO condition (-13.3 +/- 7.5 [%/h]). 
      Furthermore, the maximal power output in the Wingate test immediately after the 
      endurance exercise was significantly higher in the ISO condition than in the SUC 
      condition (peak power: 12.0 +/- 0.6 vs. 11.5 +/- 0.9 [W/kg]). CONCLUSION: Compared 
      with SUC intake, ISO intake does not produce an abrupt decline in the percentage 
      of CHO-derived EE during prolonged endurance exercise; it remains relatively high 
      until the final exercise phase. Additionally, anaerobic power output at the end 
      of the exercise, largely contributed by anaerobic glycolysis, was greater after 
      ISO intake than after SUC intake.
CI  - (c) 2023. The Author(s).
FAU - Onuma, Naoko
AU  - Onuma N
AD  - School of Pharmacy, Nihon University, Funabashi, Chiba, Japan.
AD  - Graduate School of Life Sciences, Showa Women's University, Tokyo, Japan.
FAU - Shindo, Daisuke
AU  - Shindo D
AD  - School of Pharmacy, Nihon University, Funabashi, Chiba, Japan.
FAU - Matsuo, Eriko
AU  - Matsuo E
AD  - College of Sports Sciences, Nihon University, Tokyo, Japan.
FAU - Sakazaki, Miki
AU  - Sakazaki M
AD  - Mitsui DM Sugar Co. Ltd, Tokyo, Japan.
FAU - Nagai, Yukie
AU  - Nagai Y
AD  - Mitsui DM Sugar Co. Ltd, Tokyo, Japan.
FAU - Yamanaka, Kentaro
AU  - Yamanaka K
AD  - Graduate School of Life Sciences, Showa Women's University, Tokyo, Japan. 
      kentaro@swu.ac.jp.
LA  - eng
PT  - Journal Article
DEP - 20230724
PL  - England
TA  - BMC Sports Sci Med Rehabil
JT  - BMC sports science, medicine & rehabilitation
JID - 101605016
PMC - PMC10364385
OTO - NOTNLM
OT  - Anaerobic power output
OT  - Carbohydrate oxidation
OT  - Endurance exercise
OT  - Energy expenditure
OT  - Isomaltulose
COIS- M.S. and Y.N. are employees of Mitsui DM Sugar Co. Ltd. and were not involved in 
      the data acquisition, statistical analysis, or writing of the manuscript. M.S. 
      and Y.N. were involved in the study design, interpretation of the results, and 
      decision to submit the manuscript for publication. N.O., E.M., D.S., and K.Y. had 
      no professional relationships with the company involved in this study. D.S. 
      received a research grant from Mitsui DM Sugar Co. Ltd.
EDAT- 2023/07/25 01:09
MHDA- 2023/07/25 01:10
PMCR- 2023/07/24
CRDT- 2023/07/24 23:50
PHST- 2023/01/20 00:00 [received]
PHST- 2023/07/12 00:00 [accepted]
PHST- 2023/07/25 01:10 [medline]
PHST- 2023/07/25 01:09 [pubmed]
PHST- 2023/07/24 23:50 [entrez]
PHST- 2023/07/24 00:00 [pmc-release]
AID - 10.1186/s13102-023-00702-7 [pii]
AID - 702 [pii]
AID - 10.1186/s13102-023-00702-7 [doi]
PST - epublish
SO  - BMC Sports Sci Med Rehabil. 2023 Jul 24;15(1):89. doi: 
      10.1186/s13102-023-00702-7.