scholarly journals Rapid Weight Loss Adversely Affects Muscle Damage Markers In Elite Judo Athletes

2020 ◽  
Vol 52 (7S) ◽  
pp. 1070-1070
Author(s):  
Tatjana Trivic ◽  
Nemanja Lakicevic ◽  
Roberto Roklicer ◽  
Nebojsa Maksimovic ◽  
Ambra Gentile ◽  
...  
Keyword(s):  
Weight Loss ◽  
Muscle Damage ◽  
Rapid Weight Loss ◽  
Judo Athletes ◽  
Muscle Damage Markers

Effects of Rapid Weight Loss on Balance and Reaction Time in Elite Judo Athletes

2018 ◽  
Vol 13 (10) ◽  
pp. 1371-1377 ◽  
Author(s):  
Jose Morales ◽  
Carla Ubasart ◽  
Mónica Solana-Tramunt ◽  
Israel Villarrasa-Sapiña ◽  
Luis-Millán González ◽  
...  
Keyword(s):  
Weight Loss ◽  
Reaction Time ◽  
Body Mass ◽  
Eating Habits ◽  
Control Group ◽  
Rapid Weight Loss ◽  
Balance Performance ◽  
Eyes Closed ◽  
Judo Athletes ◽  
Experimental Group

Balance, reaction time, and strength are key factors affecting judo performance. Although ample research has been done examining potential strength changes caused by weight loss prior to competition, changes in balance and reaction time have been overlooked. Purpose: To examine the effects of rapid and progressive weight loss (RWL and PWL) on balance, reaction time, and strength in a group of elite judo athletes. Methods: A total of 38 female and male judo athletes (age = 20.6 [2.6] y) completed balance, reaction-time, and strength assessments 1 wk prior to an official weigh-in (pretest) and immediately after the weigh-in (posttest). The athletes were divided into 3 groups, 1 control group who maintained regular training and eating habits, 1 experimental group who engaged in PWL (<3% reductions in body mass), and a second experimental group who used RWL techniques (>3% reductions in body mass). Results: The RWL group showed significant decreases (P < .05) in balance performance (ellipse area: 4.83 [0.87] vs 6.31 [1.39] mm2 with eyes closed; mean mediolateral velocity: 2.07 [0.2] vs 2.52 [0.45] mm·s−1 with eyes closed; and mean anteroposterior velocity: 2.25 [0.20] vs 2.51 [0.32] mm·s−1 with eyes open and 2.44 [0.26] vs 3.06 [0.56] mm·s−1 with eyes closed) and reaction time (0.38 [0.04] vs 0.42 [0.06] s) with no changes in strength from pretesting to posttesting. The athletes in the PWL and control groups maintained performance in all variables. Conclusion: These findings demonstrate negative effects on perceptual motor-skill performance in judo athletes engaging in RWL strategies prior to competition.

scholarly journals The effects of rapid weight loss on skeletal muscle in judo athletes

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Roberto Roklicer ◽  
Nemanja Lakicevic ◽  
Valdemar Stajer ◽  
Tatjana Trivic ◽  
Antonino Bianco ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Weight Loss ◽  
Rapid Weight Loss ◽  
Judo Athletes

Effect of rapid weight loss on physical performance in judo athletes: is rapid weight loss a help for judokas with weight problems?

2017 ◽  
Vol 17 (5) ◽  
pp. 763-773 ◽  
Author(s):  
Leonardo S. Fortes ◽  
Bruna D. V. Costa ◽  
Pedro P. Paes ◽  
Edilson S. Cyrino ◽  
Jeferson M. Vianna ◽  
...  
Keyword(s):  
Weight Loss ◽  
Physical Performance ◽  
Rapid Weight Loss ◽  
Weight Problems ◽  
Judo Athletes

Rapid weight loss in visually impaired judo athletes: Prevalence, magnitude, and methods

2020 ◽  
pp. 026461962096769
Author(s):  
Rafael L Kons ◽  
Rodrigo G Gheller ◽  
Filipe E Costa ◽  
Daniele Detanico
Keyword(s):  
Weight Loss ◽  
Level Set ◽  
Visually Impaired ◽  
T Test ◽  
Rapid Weight Loss ◽  
Significance Level ◽  
Validated Questionnaire ◽  
Judo Athletes ◽  
Males And Females

The aim of this study was to determine the prevalence, magnitude, and methods of rapid weight loss (RWL) in visually impaired (VI) judo athletes, and compare these aspects between males and females. Thirty VI judo athletes (20 men and 10 women) completed a validated questionnaire to assess information about the magnitude and methods of RWL. Simple frequency was used to describe the influence and methods in all athletes and according to sex. Moreover, the t test was used to compare the variables between the sexes with the significance level set at p < .05. The main results showed that most VI judo athletes (67%) lost weight to compete. Most methods included gradual dieting (40%) and increased exercise volume (33%). The judo coach/ sensei was the person who most influenced the athletes in RWL (45%). There were no significant differences between the sexes regarding the RWL magnitude and methods used. As concluded, most VI judo athletes lost weight to compete, but the interval to reduce weight seemed slightly longer than it usually occurs in RWL. Gradual dieting and increased exercise volume were the most frequently used methods to lose weight, without any differences between males and females.

scholarly journals Caffeine Ingestion after Rapid Weight Loss in Judo Athletes Reduces Perceived Effort and Increases Plasma Lactate Concentration without Improving Performance

Nutrients ◽  
2014 ◽  
Vol 6 (7) ◽  
pp. 2931-2945 ◽  
Author(s):  
Joao Lopes-Silva ◽  
Leandro Felippe ◽  
Marcos Silva-Cavalcante ◽  
Romulo Bertuzzi ◽  
Adriano Lima-Silva
Keyword(s):  
Weight Loss ◽  
Lactate Concentration ◽  
Rapid Weight Loss ◽  
Plasma Lactate ◽  
Caffeine Ingestion ◽  
Perceived Effort ◽  
Plasma Lactate Concentration ◽  
Judo Athletes

scholarly journals Methods and Magnitudes of Rapid Weight Loss in Judo Athletes Over Pre-Competition Periods

2017 ◽  
Vol 18 (2) ◽  
Author(s):  
Rafael Lima Kons ◽  
Marina Saldanha Da Silva Athayde ◽  
Bruno Follmer ◽  
Daniele Detanico
Keyword(s):  
Weight Loss ◽  
Body Weight ◽  
Body Fat ◽  
Fluid Intake ◽  
Fat Free Mass ◽  
Rapid Weight Loss ◽  
Southern Brazil ◽  
Team Members ◽  
Judo Athletes ◽  
Anthropometric Assessment

AbstractThe study aimed to analyse the methods and magnitudes of rapid weight loss (RWL) in judo team members in distinct periods before the biggest state competition in Southern Brazil.Twelve male judo athletes took part in the study. The data collection was performed in three periods: (1) three months before the biggest state competition, (2) one week before the competition, (3) the day prior to the event. Anthropometric assessment and the Rapid Weight Loss Questionnaire were performed. Student’sThe main results showed that the majority of athletes reduced 7.1 ± 6.8 kg and started to lose weight to compete 13–16 years earlier. Increasing exercises (91.7%) and restricting fluid intake (41.7%) were the most frequent methods of weight loss. The judo coach/sensei was the person who most influenced the RWL procedure (58.3%). The athletes reduced 5% of their body weight (p < 0.01), 2.4% of their body fat (We conclude that RWL was a common and premature practice in the athletes in the study. The most common methods were increasing exercise volume and restricting fluid and food intake. The coach/sensei was the most influential person in this practice. The judo athletes presented decreases in body fat and fat-free mass during the period prior to the competition.

scholarly journals Different Training Methods Cause Similar Muscle Damage in Youth Judo Athletes

2021 ◽  
Vol 78 (1) ◽  
pp. 79-87
Author(s):  
Antonijo Đerek ◽  
Hrvoje Karninčić ◽  
Emerson Franchini ◽  
Saša Krstulović ◽  
Goran Kuvačić
Keyword(s):  
Muscle Damage ◽  
Biochemical Markers ◽  
Future Research ◽  
Training Methods ◽  
Blood Samples ◽  
Practice Group ◽  
Judo Athletes ◽  
High Level ◽  
Muscular Damage ◽  
Muscle Damage Markers

Abstract It is well known that different factors can contribute to muscle damage in judo matches or training. Previous research analyzed only the effects of simulated judo combat or judo training on biochemical markers of muscle damage without determining its specific causes. Our objective was to identify possible differences in biochemical markers of muscular damage in response to different training methods in youth judo athletes. Twelve high-level male judo athletes were randomly assigned to a standing (SP, n = 6, age = 16.6 ± 1.1 years) or a groundwork (GP, n = 6, age = 17.8 ± 0.8 years) position combat practice group. Both groups had the same protocol of four 4-minute combat practice bouts separated by 1-minute rest intervals. Before and immediately after combat practice blood samples were taken to assess muscle damage markers: creatine kinase (CK), lactate dehydrogenase (LDH), aspartate aminotransferase (AST) and alanine aminotransferase (ALT). There were significant increases in AST, LDH, and CK after the standing and groundwork training sessions compared with resting values in both groups. Additionally, no significant differences in the enzyme's activity between SP and GP groups were found. These results showed that standing and groundwork randori training (free sparring or free practice) causes similar muscle damage in adolescent judo athletes. Future research should assess the effects of the same damage mechanisms over a longer period of time

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