Effect of Caffeine on Fatigue During Submaximal Isometric Contractions at Different Knee Angles

Willems, Mark E. T.; Madigan, Daniel J.

doi:10.2478/v10036-011-0027-8

Cited by 3 publications

(13 citation statements)

References 43 publications

(89 reference statements)

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“…However, these results are incongruent with recent research by Madigan and Willems who also assessed the effect of acute caffeine ingestion on isokinetic strength and muscle activity. In their study, they noted that isometric strength at 2 different knee angles was not significantly different following ingestion of caffeine or placebo.…”

Section: Discussioncontrasting

confidence: 92%

“…There was also no difference in RMS EMG of the rectus femoris and vastus lateralis. In some ways the discrepancy between our findings and those of Madigan and Willems is to be expected, as we investigated dynamic contractions, and Madigan and Willems studied isometric contractions. One criticism of the extant literature in this area is that by far the majority of studies assessing this issue have used isometric contractions, and the effect of caffeine ingestion on dynamic muscle contractions has been studied rarely .…”

Section: Discussioncontrasting

confidence: 90%

“…Also, although anthropometrical analysis was not undertaken in this study, given the level of sport‐specialization of the participant group, all had a demonstrable mesomorphic physique visually. The caffeine load used in this study was the same as that used previously by Bazzucchi et al and Madigan and Willems, and the age ranges were comparable. However, such a bolus of caffeine can result in a large absolute dose (e.g., 600 mg in a 100 kg man) and could cause other health complications if taken by a population that is already primed for strength‐based activity.…”

Section: Discussionmentioning

confidence: 97%

“…One study reported increased electromyographic (EMG) activity and enhanced muscle performance of elbow flexors during short‐duration maximal dynamic contractions . In contrast, the results reported by Madigan and Willems found no significant difference in muscle activity of the vastus lateralis and biceps femoris between caffeine (6 mg ⋅ kg −1 ) and placebo conditions following intermittent isometric contractions (15 s contraction, 5 s rest) at 50% maximal voluntary isometric torque until failure. Thus, prior research on this topic is equivocal.…”

mentioning

confidence: 94%

“…Furthermore, the majority of studies on this topic have focused on maximal isometric strength, and the effect of caffeine on neuromuscular function during dynamic contractions at different speeds has only been investigated in 1 prior study and only to a speed of 250°s −1 . Given that only 2 prior studies appear to have investigated this area and have produced conflicting findings, we sought to confirm the effect of caffeine ingestion on muscle torque production and muscle activity by comparing its effect at different contraction speeds in trained men.…”

mentioning

confidence: 99%

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Effect of caffeine ingestion on torque and muscle activity during resistance exercise in men

2014

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Section: Discussioncontrasting

confidence: 92%

Section: Discussioncontrasting

confidence: 90%

Section: Discussionmentioning

confidence: 97%

mentioning

confidence: 94%

mentioning

confidence: 99%

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Effect of caffeine ingestion on torque and muscle activity during resistance exercise in men

2014

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Effects of Gender Difference and Caffeine Supplementation on Anaerobic Muscle Performance

et al. 2015

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The primary purpose of this study was to investigate the effects of gender difference and caffeine supplementation to maximal voluntary isometric contractions (MVIC) and submaximal voluntary isometric contractions (T(lim)). 10 male (age: 20.10 ± 2.18 years, BMI: 22.23±1.96 kg/m(2)) and 10 female (age: 19.90±0.99 years, BMI: 21.76±2.65 kg/m(2)) elite collegiate athletes were recruited. Subjects ingested caffeine (6 mg/kg) or a placebo in a randomized, double-blind, placebo-control, and counter-balanced fashion. MVIC and T(lim) were measured after supplementations. T(lim) result was calculated based on the time to exhaustion of isometric contraction with 50% MVIC. Fatigue index (FI%) referred to the MVIC tested 20 s after the cessation of T(lim) test, and was indexed by the percentage of MVIC decline. No significant interaction effect was found between the gender factor and the supplementation factor for all dependent variables. Compared to the placebo, caffeine supplementation significantly increased MVIC (5.9%) and T(lim) (15.5%) (p<0.05) whereas it had no significant effect on FI%. This study demonstrates that caffeine supplementation at a 6 mg/kg dosage facilitates performances in MVIC and T(lim). The ergogenic effect of caffeine on muscle power and muscle endurance does not show a gender bias.

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Effects of caffeine and sex on muscle performance and delayed-onset muscle soreness after exercise-induced muscle damage: a double-blind randomized trial

Chen¹,

Chen

Tung

et al. 2019

Journal of Applied Physiology

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The present study aims to investigate effects of caffeine ingestion and sex difference on muscle performance, delayed-onset muscle soreness (DOMS), and various biomarkers under exercise-induced muscle damage (EIMD). Twenty (10 male and 10 female) healthy elite college athletes were recruited. Participants ingested either caffeine (6 mg/kg) or a placebo in a randomized, double-blind, and counterbalanced fashion at 24 and 48 h following EIMD. Muscle performance, DOMS, and blood samples were taken an hour before and an hour after supplementation. Caffeine ingestion restored impaired maximal voluntary isometric contractions (MVIC: 10.2%; MVICpost: 7.2%, both P < 0.05) during EIMD across both sexes. Following caffeine ingestion during MVIC, while affected by EIMD, an interaction was found in DOMS and serum K+ (both P < 0.05), with males showing greater attenuation (21.5 and 16.9%, respectively) compared with females (4.6 and 1.3%, respectively). DOMS demonstrated an inverse correlation with MVIC after caffeine ingestion both overall and among male athletes ( r = −0.34 and −0.54, respectively; P < 0.05) but not among female athletes ( r = −0.11; P > 0.05) under EIMD. In addition, caffeine ingestion increased postexercise serum glucose and lactate concentrations across both sexes (both P < 0.05). This is the first study to show that male athletes, compared with female athletes, experience a greater reduction in DOMS during enhanced MVIC when caffeine was consumed, suggesting men might receive greater ergogenic effects from caffeine when affected by EIMD. Furthermore, caffeine ingestion was able to restore impaired muscle power among elite collegiate athletes across both sexes. NEW & NOTEWORTHY Exercise-induced muscle damage (EIMD) reduces anaerobic/aerobic performance and increases delayed-onset muscle soreness (DOMS) during exercise. We show that acute caffeine supplementation at a dosage of 6 mg/kg seems to facilitate recovery of anaerobic muscle power and attenuate DOMS after EIMD across both sexes. Furthermore, male athletes, compared with female athletes, when caffeine was prescribed, experience a greater reduction in DOMS with better restoration of impaired maximal voluntary isometric contractions. This suggests that male athletes might benefit from the ergogenic effect of acute caffeine supplementation after the onset of EIMD.

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Effect of Caffeine on Fatigue During Submaximal Isometric Contractions at Different Knee Angles

Cited by 3 publications

References 43 publications

Effect of caffeine ingestion on torque and muscle activity during resistance exercise in men

Effect of caffeine ingestion on torque and muscle activity during resistance exercise in men

Effects of Gender Difference and Caffeine Supplementation on Anaerobic Muscle Performance

Effects of caffeine and sex on muscle performance and delayed-onset muscle soreness after exercise-induced muscle damage: a double-blind randomized trial

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