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The effect of 8-weeks of combined resistance training and chocolate milk consumption on maximal strength, muscle thickness, peak power and lean mass, untrained, university-aged males

Yapici, Hakan, Gülü, Mehmet, Yagin, Fatma Hilal, Ugurlu, Dondu, Comertpay, Ertan, Eroglu, Oguz, Kocoğlu, Melike, Aldhahi, Monira I., Karayigit, Raci, Badri AL-Mhanna, Sameer·2023·Frontiers in Physiology
DOI 10.3389/fphys.2023.1148494PMC PMC10064218
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Abstract

The overarching aim of this study was to investigate the combined effects of chocolate milk consumption (500 mL) with 8-week of resistance training on muscle hypertrophy, body composition, and maximal strength in untrained healthy men. A total of 22 Participants were randomly divided into two experimental groups: combined resistance training (3 sessions per week for 8 weeks) and chocolate milk consumptions (include 30 g protein) Resistance Training Chocolate Milk (RTCM) (Age: 20.9 ± 0.9 years old) and resistance training (RT) only (Age: 19.8 ± 0.7 years old). Muscle thickness (MT), using a portable ultrasound, body composition, body mass, maximal strength (one repetition maximum (1 RM), counter movement jump (CMJ) and peak power (PP) were determined at baseline and 8 weeks later. In the RTCM, finding showed a significant improvement in the outcomes compared to the RT group, besides the main effect of time (pre and post). The 1 RM total increased by 36.7% in RTCM group compared to 17.6% increased in the RT group (p < 0.001). Muscle thickness increased by 20.8% in the RTCM group and 9.1% in the RT group (p < 0.001). In the RTCM group, the PP increased by 37.8% compared to only 13.8% increase in the RT group (p = 0.001). The group*time interaction effect was significant for MT, 1RM, CMJ, and PP (p < 0.05), and it was observed that the RTCM and the 8-week resistance training protocol maximized performance. Body fat percentage (%) decreased more in the RTCM (18.9%) group than in the RT (6.7%) group (p = 0.002). In conclusion, chocolate milk (500 mL) with high protein content consumed in addition to resistance training provided superior gains in terms of MT, 1 RM, body composition, CMJ, and PP. The finding of the study demonstrated the positive effect of casein-based protein (chocolate milk) and resistance training on the muscle performance. Chocolate milk consumption has a more positive effect on muscle strength when combined with RT and should be considered as a suitable post-exercise nutritional supplement. Future research could be conducted with a larger number of participants of different ages and longer study durations.

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Crossref · 10.3389/fphys.2023.1148494

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  • Protein intakes ranging from 1.6 to 2.2 g/kg may optimize muscle anabolism when combined with resistance training.

    “Protein intakes ranging from 1.6 to 2.2 g/kg may optimize muscle anabolism when combined with resistance training [102,107–114].”

    From International Society of Sports Nutrition position stand: diets for body weight reduction (2026) · cites this paper as [112]

    The Introduction and Discussion say that protein supplementation alongside resistance training can improve muscle hypertrophy, and Methods Table 1 reports mean intakes of 1.9 and 1.6 g/kg in the two groups. The paper does not identify 1.6–2.2 g/kg as an optimal range or establish that range for muscle anabolism; 2.2 g/kg is not reported as a target. (LLM, conf=0.88)

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Metadata

Authors
Yapici, H., Gülü, M., Yagin, F. H., Ugurlu, D., Comertpay, E., Eroglu, O., Kocoğlu, M., Aldhahi, M. I., Karayigit, R., & Badri AL-Mhanna, S.
Venue
Frontiers in Physiology
Publisher
Frontiers Media SA
Published
2023-03-15
Volume
14
ISSN
1664-042X
DOI
10.3389/fphys.2023.1148494
PMC
PMC10064218
Cited by
13
References
14
Licence
creativecommons.org/licenses/by/4.0/ (vor)

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