Effect of betaine supplementation on power performance and fatigue

Hoffman, Jay R.; Ratamess, Nicholas A.; Kang, Jie; Rashti, Stefanie L.; Faigenbaum, Avery D.

doi:10.1186/1550-2783-6-7

Cited by 91 publications

(109 citation statements)

References 23 publications

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“…However, the number of repetitions to exhaustion performed in the squat and bench press exercise was unchanged. Hoffman et al (2009) also reported improvements in muscle endurance in the squat exercise, and increase in the quality of repetitions performed (e.g., number of repetitions performed at 90% of 1-RM) following 2 weeks of betaine supplementation in physically active males. In contrast, no differences in power assessments were noticed.…”

Section: Introductionmentioning

confidence: 92%

“…The main physiological function of betaine is either as an organic osmolyte to protect cells under stress or as a catabolic source of methyl groups via transmethylation (Craig 2004). Moreover, there is an evidence indicating that the potential ergogenic value of betaine in athletic performance, especially in strength parameters (Lee et al 2010;Hoffman et al 2009;Maresh et al 2008).…”

Section: Introductionmentioning

confidence: 98%

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Creatine but not betaine supplementation increases muscle phosphorylcreatine content and strength performance

et al. 2011

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We aimed to investigate the role of betaine supplementation on muscle phosphorylcreatine (PCr) content and strength performance in untrained subjects. Additionally, we compared the ergogenic and physiological responses to betaine versus creatine supplementation. Finally, we also tested the possible additive effects of creatine and betaine supplementation. This was a double-blind, randomized, placebo-controlled study. Subjects were assigned to receive betaine (BET; 2 g/day), creatine (CR; 20 g/day), betaine plus creatine (BET+CR; 2+20 g/day, respectively) or placebo (PL). At baseline and after 10 days of supplementation, we assessed muscle strength and power, muscle PCr content, and body composition. The CR and BET+CR groups presented greater increase in muscle PCr content than PL (p=0.004 and p=0.006, respectively). PCr content was comparable between BET versus PL (p=0.78) and CR versus BET+CR (p=0.99). CR and BET+CR presented greater muscle power output than PL in the squat exercise following supplementation (p=0.003 and p=0.041, respectively). Similarly, bench press average power was significantly greater for the CR-supplemented groups. CR and BET+CR groups also showed significant pre- to post-test increase in 1-RM squat and bench press (CR: p=0.027 and p<0.0001; BET+CR: p=0.03 and p<0.0001 for upper- and lower-body assessments, respectively) No significant differences for 1-RM strength and power were observed between BET versus PL and CR versus BET+CR. Body composition did not differ between the groups. In conclusion, we reported that betaine supplementation does not augment muscle PCr content. Furthermore, we showed that betaine supplementation combined or not with creatine supplementation does not affect strength and power performance in untrained subjects.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 98%

Creatine but not betaine supplementation increases muscle phosphorylcreatine content and strength performance

et al. 2011

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“…This supports the two important factors from the current study; subjects are doing the exercise correctly by moving both sides similarly for both exercises, and the device detected the similar velocity pattern of both arms. Unlike wired devices to measure velocities [3][4][5] , the wireless inertia sensor is capable of measuring velocity and power of many DB exercises along with body weight exercises such as push-ups and jumps, or others like kettlebell swing, medicine ball throws, etc. Wired devices are only capable of tracking velocity and power from the exercises that are attachable to the bar.…”

Section: Discussionmentioning

confidence: 99%

“…With competing technologies, measurements are taken using a wired device such as Tendo-unit (Tendo Sport machine, Slovak Republic) and GymAware (Kinetic Performance, Australia) in both laboratory and weight room environment. [3][4][5] While these wired devices have their importance, given a capability to provide immediate feedback, the fact that a wire or cord must run between the device and the bar may limit the exercises that can be measured. The wireless inertia sensor, transmitting via Bluetooth™, may provide useful measures in the training environment without the limitation of a connection to the bar, and without a hassle of bringing athletes to the laboratory for testing or data processing after the testing.…”

Section: Introductionmentioning

confidence: 99%

Validity of wireless device measuring velocity of resistance exercises

Sato¹,

Beckham²,

Carroll³

et al. 2015

Journal of Trainology

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Objectives:The purpose of the study was to identify the level of accuracy in velocity measurement from a newly developed inertia sensor. Design and Methods: Five subjects performed two dumbbell exercises for total of four sets of ten repetitions with a light intensity. Velocity data were taken and considered for analysis from two devices; the inertia sensor, wirelessly connected via Bluetooth™ to a smartphone, and a motion capture system. Both data were taken at the sampling frequency of 200 Hz. Identical data sets of peak and average velocity were analyzed with Pearson product-moment zero-order correlation using total 200 data points (5 subjects, 4 sets, and 10 repetitions) on both exercises with p value of 0.05. Data were also analyzed using the same statistical procedure for left and right side to ensure the device-device data consistency. Results: Results showed high correlations in both exercises between the two velocity measurement methods (0.80 -0.92), indicating the accuracy of the data from the inertia sensor is supportive. Left and right side correlations were also high from the inertia sensor (0.90 -0.93) indicating that the data were similar with relatively identical movements between the two limbs. Conclusions: With the accuracy of the velocity measurement, this would potentially replace currently used, wired devices to accommodate user-friendly, accessible to more exercises to measure velocity.

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“…Specifically, betaine has been linked to improving muscular endurance, strength, and power (31,55) and can be found in beetroot. Likewise, the polyphenols, quercetin and resveratrol, which are found in beetroot have, in some instances, been reported to increase aerobic capacity and stimulate mitochondrial biogenesis (20,44).…”

Section: Experimental Considerationsmentioning

confidence: 99%

Effects of short-term dietary nitrate supplementation on blood pressure, O₂uptake kinetics, and muscle and cognitive function in older adults

Kelly

Fulford

Vanhatalo

et al. 2013

American Journal of Physiology-Regulatory, Integrative and Comp

203

206

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AM. Effects of shortterm dietary nitrate supplementation on blood pressure, O 2 uptake kinetics, and muscle and cognitive function in older adults. Am J Physiol Regul Integr Comp Physiol 304: R73-R83, 2013. First published November 21, 2012 doi:10.1152/ajpregu.00406.2012 Ϫ ) supplementation has been shown to reduce resting blood pressure and alter the physiological response to exercise in young adults. We investigated whether these effects might also be evident in older adults. In a double-blind, randomized, crossover study, 12 healthy, older (60 -70 yr) adults supplemented their diet for 3 days with either nitrate-rich concentrated beetroot juice (BR; 2 ϫ 70 ml/day, ϳ9.6 mmol/day NO 3 Ϫ ) or a nitrate-depleted beetroot juice placebo (PL; 2 ϫ 70 ml/day, ϳ0.01 mmol/day NO 3 Ϫ ). Before and after the intervention periods, resting blood pressure and plasma [nitrite] were measured, and subjects completed a battery of physiological and cognitive tests. Nitrate supplementation significantly increased plasma [nitrite] and reduced resting systolic (BR: 115 Ϯ 9 vs. PL: 120 Ϯ 6 mmHg; P Ͻ 0.05) and diastolic (BR: 70 Ϯ 5 vs. PL: 73 Ϯ 5 mmHg; P Ͻ 0.05) blood pressure. Nitrate supplementation resulted in a speeding of the V O2 mean response time (BR: 25 Ϯ 7 vs. PL: 28 Ϯ 7 s; P Ͻ 0.05) in the transition from standing rest to treadmill walking, although in contrast to our hypothesis, the O 2 cost of exercise remained unchanged. Functional capacity (6-min walk test), the muscle metabolic response to low-intensity exercise, brain metabolite concentrations, and cognitive function were also not altered. Dietary nitrate supplementation reduced resting blood pressure and improved V O2 kinetics during treadmill walking in healthy older adults but did not improve walking or cognitive performance. These results may have implications for the enhancement of cardiovascular health in older age.nitrate; nitrite; nitric oxide; blood pressure; exercise performance; cognitive performance; O2 uptake kinetics THE BENEFICIAL EFFECTS OF a vegetable-rich diet upon cardiovascular health (27) and longevity (79) have been well described. These positive effects have been attributed, in part, to inorganic nitrate (NO 3 Ϫ ), which is particularly rich in leafy greens and beetroot. The NO 3 Ϫ anion itself is inert, and any biological effects are likely to be the result of its conversion to the nitrite anion (NO 2 Ϫ ) in the mouth via facultative anaerobic bacteria on the surface of the tongue (25). When swallowed, NO 2 Ϫ can be further converted into nitric oxide (NO) (9), but it is clear that some NO 2 Ϫ enters the circulation. The subsequent reduction of NO 2 Ϫ to NO and other reactive nitrogen intermediates is facilitated in hypoxia (11). The production of NO via nitric oxide synthase (NOS) is impaired in hypoxia and, thus, it has been proposed that the NO 3 Ϫ -NO 2 Ϫ -NO pathway represents a complementary system for NO generation across a wide range of redox states (53). NO is an essential physiological signaling molecule with numerous functions in...

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Effect of betaine supplementation on power performance and fatigue

Abstract: Background: The purpose of this study was to examine the efficacy of 15 days of betaine supplementation on muscle endurance, power performance and rate of fatigue in active collegeaged men.

Cited by 91 publications

References 23 publications

Creatine but not betaine supplementation increases muscle phosphorylcreatine content and strength performance

Creatine but not betaine supplementation increases muscle phosphorylcreatine content and strength performance

Validity of wireless device measuring velocity of resistance exercises

Effects of short-term dietary nitrate supplementation on blood pressure, O₂uptake kinetics, and muscle and cognitive function in older adults

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Effect of betaine supplementation on power performance and fatigue

Abstract: Background: The purpose of this study was to examine the efficacy of 15 days of betaine supplementation on muscle endurance, power performance and rate of fatigue in active collegeaged men.

Cited by 91 publications

References 23 publications

Creatine but not betaine supplementation increases muscle phosphorylcreatine content and strength performance

Creatine but not betaine supplementation increases muscle phosphorylcreatine content and strength performance

Validity of wireless device measuring velocity of resistance exercises

Effects of short-term dietary nitrate supplementation on blood pressure, O2uptake kinetics, and muscle and cognitive function in older adults

Contact Info

Product

Resources

About

Effects of short-term dietary nitrate supplementation on blood pressure, O₂uptake kinetics, and muscle and cognitive function in older adults