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Cited by 55Coffee research and impactsSports Performance and TrainingMuscle metabolism and nutrition

Acute Enhancement of Jump Performance, Muscle Strength, and Power in Resistance-Trained Men After Consumption of Caffeinated Chewing Gum

Venier, Sandro, Grgic, Jozo, Mikulic, Pavle·2019·International Journal of Sports Physiology and Performance
DOI 10.1123/ijspp.2019-0098
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Abstract

PURPOSE: To explore the acute effects of caffeinated chewing gum on vertical-jump performance, isokinetic knee-extension/flexion strength and power, barbell velocity in resistance exercise, and whole-body power. METHODS: Nineteen resistance-trained men consumed, in randomized counterbalanced order, either caffeinated chewing gum (300 mg of caffeine) or placebo and completed exercise testing that included squat jump; countermovement jump; isokinetic knee extension and knee flexion at angular velocities of 60 and 180°·s-1; bench-press exercise with loads corresponding to 50%, 75%, and 90% of 1-repetition maximum (1RM); and an "all-out" rowing-ergometer test. RESULTS: Compared with placebo, caffeinated chewing gum enhanced (all Ps < .05) (1) vertical-jump height in the squat jump (effect size [ES] = 0.21; +3.7%) and countermovement jump (ES = 0.27; +4.6%); (2) knee-extension peak torque (ES = 0.21; +3.6%) and average power (ES = 0.25; +4.5%) at 60°·s-1 and knee-extension average power (ES = 0.30; +5.2%) at 180°·s-1, and knee-flexion peak torque at 60°·s-1 (ES = 0.22; +4.1%) and 180°·s-1 (ES = 0.31; +5.9%); (3) barbell velocity at 50% of 1RM (ES = 0.30; +3.2%), 75% of 1RM (ES = 0.44; +5.7%), and 90% of 1RM (ES = 0.43; +9.1%); and (4) whole-body peak power on the rowing-ergometer test (ES = 0.41; +5.0%). Average power of the knee flexors did not change at either angular velocity with caffeine consumption. CONCLUSIONS: Caffeinated chewing gum with a dose of caffeine of 300 mg consumed 10 min preexercise may acutely enhance vertical-jump height, isokinetic strength and power of the lower-body musculature, barbell velocity in the bench-press exercise with moderate to high loads, and whole-body power.

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  • Muscle velocity and muscle power assessment require optimal neuromuscular conditions, and studies analyzing supplement effects on muscular velocity and power selected a maximum of two repetitions with a submaximal load, with recovery periods of 2−5 min.

    “Muscle velocity and muscle power assessment require optimal neuromuscular conditions and, as such, studies analyzing the effect of different supplements on muscular velocity and power selected a maximum of two repetitions with a submaximal load, with recovery periods of 2−5 min [117,118,119,120,121,122].”

    From Effects of Dietary Nitrate Supplementation on Weightlifting Exercise Performance in Healthy Adults: A Systematic Review (2020) · cites this paper as [121]

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Authors
Venier, S., Grgic, J., & Mikulic, P.
Venue
International Journal of Sports Physiology and Performance
Publisher
Human Kinetics
Published
2019-11-01
Volume
14
Issue
10
Pages
1415-1421
ISSN
  • 1555-0265 (ISSN-L)
  • 1555-0273
DOI
10.1123/ijspp.2019-0098
OpenAlex
W2940007376
Cited by
55
References
33
Citations by year
2026: 4 · 2025: 10 · 2024: 8 · 2023: 6 · 2022: 5 · 2021: 8 · 2020: 7 · 2019: 6
FWCI
4.05
Type
journal article
Language
en
Open access
closed
Locations
  • International Journal of Sports Physiology and Performance (publishedVersion)
  • PubMed (publishedVersion)
  • Victoria University Research Repository (Victoria University) (submittedVersion)
Topics
  • Health Sciences › Medicine › Pharmacology › Coffee research and impacts
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Sports Performance and Training
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
Keywords
caffeine, acute caffeine ingestion, vertical jump performance, isokinetic knee strength, barbell velocity, resistance training, rowing ergometer, squat jump, countermovement jump, resistance-trained men, knee extension, knee flexion, ergogenic aids, exercise performance enhancement

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