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Article

Effects of Glucose with Casein Peptide Supplementation on Post-Exercise Muscle Glycogen Resynthesis in C57BL/6J Mice

Wellness & Nutrition Science Institute, Morinaga Milk Industry Co., Ltd., 1-83-5 Higashihara, Zama-City 252-8583, Kanagawa Prefecture, Japan
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Nutrients 2018, 10(6), 753; https://doi.org/10.3390/nu10060753
Received: 24 April 2018 / Revised: 6 June 2018 / Accepted: 8 June 2018 / Published: 11 June 2018
(This article belongs to the Special Issue Protein for Post-Exercise Recovery and Performance)
Numerous studies have reported that post-exercise ingestion of carbohydrates with protein supplementation can enhance glycogen recovery. However, few reports have focused on the degrees of degradation of the ingested proteins due to post-exercise glycogen resynthesis. Accordingly, the aim of this study was to clarify the effects of differences in protein degradation on muscle glycogen recovery. Male seven-week-old C57BL/6J mice performed a single bout of 60-min treadmill running exercise and were then orally administered glucose (Glu; 1.5 mg/g body weight (BW)), glucose with casein peptide (Glu + Pep; 1.5 + 0.5 mg/g BW) or its constituent amino acid mixture (Glu + AA; 1.5 + 0.5 mg/g BW). At 120 min after supplementation, the soleus muscle glycogen content in the Glu and Glu + AA groups was significantly higher than that immediately after exercise; however, no such difference was observed in the Glu + Pep group. Blood substrate concentration and insulin signaling did not differ among the three groups. Furthermore, energy expenditure during the recovery period in the Glu + Pep group was significantly higher than that in the Glu and Glu + AA groups. These findings suggest that post-exercise co-ingestion of glucose and casein peptide might delay glycogen resynthesis, at least in part through increased energy expenditure caused by casein peptide ingestion. View Full-Text
Keywords: casein peptide; muscle glycogen; post-exercise; insulin signaling; energy expenditure casein peptide; muscle glycogen; post-exercise; insulin signaling; energy expenditure
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MDPI and ACS Style

Matsunaga, Y.; Sakata, Y.; Yago, T.; Nakamura, H.; Shimizu, T.; Takeda, Y. Effects of Glucose with Casein Peptide Supplementation on Post-Exercise Muscle Glycogen Resynthesis in C57BL/6J Mice. Nutrients 2018, 10, 753. https://doi.org/10.3390/nu10060753

AMA Style

Matsunaga Y, Sakata Y, Yago T, Nakamura H, Shimizu T, Takeda Y. Effects of Glucose with Casein Peptide Supplementation on Post-Exercise Muscle Glycogen Resynthesis in C57BL/6J Mice. Nutrients. 2018; 10(6):753. https://doi.org/10.3390/nu10060753

Chicago/Turabian Style

Matsunaga, Yutaka; Sakata, Yasuyuki; Yago, Takumi; Nakamura, Hirohiko; Shimizu, Takashi; Takeda, Yasuhiro. 2018. "Effects of Glucose with Casein Peptide Supplementation on Post-Exercise Muscle Glycogen Resynthesis in C57BL/6J Mice" Nutrients 10, no. 6: 753. https://doi.org/10.3390/nu10060753

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