The Impact of Preconditioning Strategies Designed to Improve 2000-m Rowing Ergometer Performance in Trained Rowers: A Systematic Review and Meta-Analysis

2019 ◽  
Vol 14 (7) ◽  
pp. 871-879 ◽  
Author(s):  
Tiago Turnes ◽  
Rogério S.O. Cruz ◽  
Fabrizio Caputo ◽  
Rafael A. De Aguiar
Keyword(s):  
Meta Analysis ◽  
Percentage Change ◽  
Mean Power ◽  
Caffeine Consumption ◽  
Beta Alanine ◽  
Performance Improvements ◽  
Rowing Performance ◽  
Rowing Ergometer ◽  
Superior Effect ◽  
The Impact

Purpose: The 2000-m rowing-ergometer test is the most common measure of rowing performance. Because athletes use different intervention strategies for enhancing performance, investigating the effect of preconditioning strategies on the 2000-m test is of great relevance. This study evaluated the effects of different preconditioning strategies on 2000-m rowing-ergometer performance in trained rowers. Methods: A search of electronic databases (PubMed, Google Scholar, and Web of Science) identified 27 effects of different preconditioning strategies from 17 studies. Outcomes were calculated as percentage differences between control and experimental interventions, and data were presented as mean ± 90% confidence interval. Performance data were converted to the same metrics, that is, mean power. Meta-regression analyses were conducted to assess whether performance level or caffeine dose could affect the percentage change. Results: The overall beneficial effect on 2000-m mean power was 2.1% (90% confidence limit [CL] ±0.6%). Training status affected the percentage change with interventions, with a −1.1% (90% CL ±1.2%) possible small decrease for 1.0-W·kg−1 increment in performance baseline. Caffeine consumption most likely improves performance, with superior effect in higher doses (≥6 mg·kg−1). Sodium bicarbonate and beta-alanine consumption resulted in likely (2.6% [90% CL ±1.5%]) and very likely (1.4% [90% CL ±1.2%]) performance improvements, respectively. However, some preconditioning strategies such as heat acclimation, rehydration, and creatine resulted in small to moderate enhancements in 2000-m performance. Conclusions: Supplementation of caffeine and beta-alanine is a popular and effective strategy to improve 2000-m ergometer performance in trained rowers. Additional research is warranted to confirm the benefit of other strategies to 2000-m rowing-ergometer performance.

Reliability and Effect of Sodium Bicarbonate: Buffering and 2000-m Rowing Performance

2012 ◽  
Vol 7 (2) ◽  
pp. 152-160 ◽  
Author(s):  
Amelia J. Carr ◽  
Gary J. Slater ◽  
Christopher J. Gore ◽  
Brian Dawson ◽  
Louise M. Burke
Keyword(s):  
Calcium Carbonate ◽  
Confidence Interval ◽  
Sodium Bicarbonate ◽  
Pairwise Comparisons ◽  
Bicarbonate Concentration ◽  
Mean Power ◽  
Typical Error ◽  
Rowing Performance ◽  
Rowing Ergometer ◽  
Double Blinded

Purpose:The aim of this study was to determine the effect and reliability of acute and chronic sodium bicarbonate ingestion for 2000-m rowing ergometer performance (watts) and blood bicarbonate concentration [HCO3−].Methods:In a crossover study, 7 well-trained rowers performed paired 2000-m rowing ergometer trials under 3 double-blinded conditions: (1) 0.3 grams per kilogram of body mass (g/kg BM) acute bicarbonate; (2) 0.5 g/kg BM daily chronic bicarbonate for 3 d; and (3) calcium carbonate placebo, in semi-counterbalanced order. For 2000-m performance and [HCO3−], we examined differences in effects between conditions via pairwise comparisons, with differences interpreted in relation to the likelihood of exceeding smallest worthwhile change thresholds for each variable. We also calculated the within-subject variation (percent typical error).Results:There were only trivial differences in 2000-m performance between placebo (277 ± 60 W), acute bicarbonate (280 ± 65 W) and chronic bicarbonate (282 ± 65 W); however, [HCO3−] was substantially greater after acute bicarbonate, than with chronic loading and placebo. Typical error for 2000-m mean power was 2.1% (90% confidence interval 1.4 to 4.0%) for acute bicarbonate, 3.6% (2.5 to 7.0%) for chronic bicarbonate, and 1.6% (1.1 to 3.0%) for placebo. Postsupplementation [HCO3−] typical error was 7.3% (5.0 to 14.5%) for acute bicarbonate, 2.9% (2.0 to 5.7%) for chronic bicarbonate and 6.0% (1.4 to 11.9%) for placebo.Conclusion:Performance in 2000-m rowing ergometer trials may not substantially improve after acute or chronic bicarbonate loading. However, performances will be reliable with both acute and chronic bicarbonate loading protocols.

The 1,500-m Rowing Performance is Highly Dependent on Modified Wingate Anaerobic Test Performance in National-Level Adolescent Rowers

2016 ◽  
Vol 28 (4) ◽  
pp. 572-579 ◽  
Author(s):  
Hugo Maciejewski ◽  
Abderrahmane Rahmani ◽  
Frédéric Chorin ◽  
Julien Lardy ◽  
Caroline Giroux ◽  
...  
Keyword(s):  
Muscle Mass ◽  
Test Performance ◽  
National Level ◽  
Performance Criterion ◽  
Wingate Test ◽  
Mean Power ◽  
Wingate Anaerobic Test ◽  
Rowing Performance ◽  
Rowing Ergometer ◽  
Total Muscle

Purpose:The aim of the current study was to determine whether the anaerobic performance assessed by a modified Wingate test could account for the 1,500-m rowing ergometer performance in young competitive rowers.Methods:Fourteen national-level adolescent rowers performed on a rowing ergometer i) a 30-s allout exercise (i.e., modified Wingate test) and ii) a 1,500-m all-out exercise (i.e., rowing performance). For each of these two exercises, the mean power output was considered as the main performance criterion (PWIN and P1500, respectively).Results:PWIN was correlated to P1500 (r2 = .83, p < .0001, β = 100%). Furthermore, the estimated total muscle mass was correlated to PWIN and P1500 (r2 = .72 and r2 = .83, p < .0001, β = 100%, respectively). The allometric scaling also indicated that total muscle mass accounts 62% for the relationship between PWIN and P1500.Conclusion:Our results highlight the importance of considering the contribution of total muscle mass and anaerobic energy pathways to 1,500-m rowing performance in competitive adolescent rowers. Therefore, the modified Wingate test could be used by rowing coaches to potentially identify talented young rowers.

scholarly journals Predicting the 2000‐m Rowing Ergometer Performance from Anthropometric, Maximal Oxygen Uptake and 60‐s Mean Power Variables in National Level Young Rowers

2020 ◽  
Vol 75 (1) ◽  
pp. 77-83
Author(s):  
Dario Cerasola ◽  
Marianna Bellafiore ◽  
Angelo Cataldo ◽  
Daniele Zangla ◽  
Antonino Bianco ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Body Mass ◽  
Maximal Oxygen Uptake ◽  
National Level ◽  
Body Height ◽  
Mean Power ◽  
Long Duration ◽  
Rowing Performance ◽  
Rowing Ergometer ◽  
Fast Start

Abstract Many studies reported various relationships between 2000-m rowing performance and anthropometric as well as metabolic variables, however, little is known about 60-s mean power in elite youth athletes. The aim of this study was to develop different regression models to predict 2000-m rowing indoor performance time (t2000) using anthropometric variables, maximal oxygen uptake (VO2max) and mean power established during a 60-s all-out test (W60) in national elite youth rowers. Fifteen youth male Italian rowers (age: 15.7 ± 2.0 years; body height: 176.0 ± 8.0 cm; body mass: 71.2 ± 10.0 kg) performed an incremental maximal test, a 60-s all-out test and a 2000-m race simulation using a Concept2 rowing ergometer to assess VO2max, W60 and t2000, respectively. The relationships of all variables with t2000 were investigated through Pearson’s correlation. Multiple regression analyses were used to verify the best prediction model of 2000-m indoor rowing performance. The reliability of these models was expressed by R2 and the standard error of estimate. The results showed that t2000 was significantly correlated with all the examined variables, except for VO2max/body mass and age, and exhibited the significantly highest relationship with W60 (r = -0.943). The combination of anthropometric, VO2max and W60 variables was found to be the most reliable equation to predict t2000 (R2 = 0.94, SEE = 6.4). W60 measure should be considered when monitoring the rower’s capability to perform high-intensity phases, important during the race’s fast start and end. Not requiring expensive equipment and long duration, a 60-s all-out test could be considered a valuable tool for predicting 2000-m performance of elite youth rowers.

scholarly journals The impact of supplementary short rest breaks on task performance – A meta-analysis

2016 ◽  
Vol 2016 (2) ◽  
Author(s):  
Johannes Wendsche ◽  
Andrea Lohmann-Haislah ◽  
Jürgen Jürgen
Keyword(s):  
Task Performance ◽  
Meta Analysis ◽  
Well Being ◽  
Working Time ◽  
Future Research ◽  
Performance Improvements ◽  
Positive Effects ◽  
Underlying Mechanisms ◽  
Rest Breaks ◽  
The Impact

Within-shift rest breaks are important to prevent an accumulation of impairing short-term effects of strain over working time. In this meta-analysis (k = 11, N = 705), we investigated how supplementary, frequent short rest breaks affect task performance and strain. We found positive effects on quality (g = 0.23) and quantity (g = 0.12) measures of task performance. The mean reduction of working time due to rest breaks was 9.3%. Performance improvements occurred not at costs of higher strain. Thus, our study shows that both employees’ performance and well-being benefits from scheduled within-shift breaks. We found no further effects of potentially moderating variables. Future research should examine the boundary conditions and underlying mechanisms of these effects.

scholarly journals The Effects of Caffeine Ingestion on Measures of Rowing Performance: A Systematic Review and Meta-Analysis

Nutrients ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 434 ◽  
Author(s):  
Jozo Grgic ◽  
Francisco Javier Diaz-Lara ◽  
Juan Del Coso ◽  
Michael J. Duncan ◽  
Jason Tallis ◽  
...  
Keyword(s):  
Systematic Review ◽  
Methodological Quality ◽  
Perceived Exertion ◽  
Minute Ventilation ◽  
Meta Analysis ◽  
Mean Difference ◽  
Rating Of Perceived Exertion ◽  
Caffeine Ingestion ◽  
Rowing Performance ◽  
Rowing Ergometer

The purpose of this paper was to conduct a systematic review and a meta-analysis of studies examining the acute effects of caffeine ingestion on measures of rowing performance. Crossover and placebo-controlled experiments that investigated the effects of caffeine ingestion on measures of rowing performance were included. The PEDro checklist was used to assess the methodological quality of the included studies. Seven studies of good and excellent methodological quality were included. None of the included studies examined on-water rowing. The majority of studies that were included in the meta-analysis used a 2000m rowing distance with only one using 1000m distance. Results of the main meta-analysis indicated that caffeine enhances performance on a rowing ergometer compared to placebo with a mean difference of −4.1 s (95% confidence interval (CI): −6.4, −1.8 s). These values remained consistent in the analysis in which the study that used a 1000m distance was excluded (mean difference: −4.3 s; 95% CI: −6.9, −1.8 s). We also found a significant increase in mean power (mean difference: 5.7 W; 95% CI: 2.1, 9.3 W) and minute ventilation (mean difference: 3.4 L/min; 95% CI: 1.7, 5.1 L/min) following caffeine ingestion. No significant differences between caffeine and placebo were found for the rating of perceived exertion, oxygen consumption, respiratory exchange ratio, and heart rate. This meta-analysis found that acute caffeine ingestion improves 2000m rowing ergometer performance by ~4 s. Our results support the use of caffeine pre-exercise as an ergogenic aid for rowing performance.

The impact of weight loss on depression: A preliminary meta-analysis

2004 ◽  
Author(s):  
Bruce Blaine ◽  
Jennifer McElroy ◽  
Hilary Vidair
Keyword(s):  
Weight Loss ◽  
Meta Analysis ◽  
The Impact

The impact of adult weight management interventions on mental health: A systematic review and meta-analysis

2019 ◽  
Author(s):  
Rebecca Jones ◽  
Emma Lawlor ◽  
Simon Griffin ◽  
Sluijs Esther van ◽  
Amy Ahern
Keyword(s):  
Mental Health ◽  
Systematic Review ◽  
Weight Management ◽  
Meta Analysis ◽  
Adult Weight ◽  
Management Interventions ◽  
The Impact

On the Impact of Aptness, Conventionality and Familiarity on Metaphor Processing from a Meta-analytical Point of View

2020 ◽  
Vol 6 (1) ◽  
pp. 55-106
Author(s):  
Csilla Rákosi
Keyword(s):  
Meta Analysis ◽  
Point Of View ◽  
Psycholinguistic Research ◽  
Analytical Point ◽  
Metaphor Processing ◽  
The Impact

Psycholinguistic research into metaphor processing is burdened with empirical problems as experiments provide diverging evidence on the impact of conventionality, familiarity and aptness, and with conceptual issues as the interpretation and operationalization of the three concepts mentioned, as well as the related predictions which can be drawn from theories of metaphor processing, are controversial in the literature. This paper uses tools of statistical meta-analysis in order to bring us closer to the solution of these problems and reveal future lines of research.

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