MRI evaluation of body composition changes in wrestlers undergoing rapid weight loss

Kukidome, Takeshi; Shirai, Kojo; Kubo, Junjiro; Matsushima, Yuta; Yanagisawa, Osamu; Homma, Toshiyuki; Aizawa, Katsuo

doi:10.1136/bjsm.2007.044081

Cited by 42 publications

(34 citation statements)

References 26 publications

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“…The degree of change in the amount of fat resulting from weight changes differs among specific regions of the body [6] and it is important to understand if changes in different body regions affects the accuracy of the equipment. In our sample we did not verify a relation between %FM, FM and FFM in trunk, arms or legs with the differences of the methods.…”

Section: Discussionmentioning

confidence: 99%

“…Differences related to body mass, stature, and body composition may significantly influence fighting strategies (including technical and tactical skills) and consequently the physiologic profile of these athletes [4,5]. Thus, the ability of researchers and coaches to accurately estimate minimal changes in fat mass (FM) and fat-free-mass (FFM) is crucial in sports with weight categories (i.e., martial arts, wrestling, weight lifting, and combat sports) [6]. …”

Section: Introductionmentioning

confidence: 99%

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Accuracy of DXA in estimating body composition changes in elite athletes using a four compartment model as the reference method

et al. 2010

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BackgroundDual-energy x-ray absorptiometry (DXA) provides an affordable and practical assessment of multiple whole body and regional body composition. However, little information is available on the assessment of changes in body composition in top-level athletes using DXA. The present study aimed to assess the accuracy of DXA in tracking body composition changes (relative fat mass [%FM], absolute fat mass [FM], and fat-free mass [FFM]) of elite male judo athletes from a period of weight stability to prior to a competition, compared to a four compartment model (4C model), as the criterion method.MethodsA total of 27 elite male judo athletes (age, 22.2 ± 2.8 yrs) athletes were evaluated. Measures of body volume by air displacement plethysmography, bone mineral content assessed by DXA, and total-body water assessed by deuterium dilution were used in a 4C model. Statistical analyses included examination of the coefficient of determinant (r2), standard error of estimation (SEE), slope, intercept, and agreement between models.ResultsAt a group level analysis, changes in %FM, FM, and FFM estimates by DXA were not significantly different from those by the 4C model. Though the regression between DXA and the 4C model did not differ from the line of identity DXA %FM, FM, and FFM changes only explained 29%, 36%, and 38% of the 4C reference values, respectively. Individual results showed that the 95% limits of agreement were -3.7 to 5.3 for %FM, -2.6 to 3.7 for FM, and -3.7 to 2.7 for FFM. The relation between the difference and the mean of the methods indicated a significant trend for %FM and FM changes with DXA overestimating at the lower ends and underestimating at the upper ends of FM changes.ConclusionsOur data indicate that both at group and individual levels DXA did not present an expected accuracy in tracking changes in adiposity in elite male judo athletes.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Accuracy of DXA in estimating body composition changes in elite athletes using a four compartment model as the reference method

et al. 2010

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“…Drastic weight fluctuations over short periods of time may commonly occur in these athletes throughout the year. 3,30 It is possible, however, that the abnormal behaviors occur only in pre-competitive periods and thus, do not reflect the athletes' regular eating patterns. 10 This is not the case for athletes competing in sports in which leanness is thought to improve performance.…”

Section: Figure 1 Association Between Disordered Eating Behaviors Andmentioning

confidence: 99%

Disordered eating behaviors and body image in male athletes

Goltz

Stenzel

Schneider

2013

Rev. Bras. Psiquiatr.

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Objective: To identify disordered eating behaviors and body image dissatisfaction, as well as their relationship to body fat (BF), among male athletes in high risk sports for eating disorders. Methods: One hundred and fifty-six male athletes were divided into the following categories: weightclass sports, sports where leanness improves performance, and sports with aesthetic ideals. BF was assessed and three questionnaires were used: the Eating Attitudes Test; the Bulimic Investigatory Test, Edinburgh; the Body Shape Questionnaire. Results: Disordered eating behaviors and body image dissatisfaction were found in 43 (27.6%) and 23 athletes (14.7%), respectively, and an association was detected between the two variables (p , 0.001). Athletes with and without disordered eating behaviors did not differ in %BF (11.065.2% and 9.864.0%, respectively; p = 0.106). However, athletes with body image dissatisfaction had higher %BF than those who were satisfied (12.665.9% and 9.763.9%, respectively; p = 0.034). There were no differences in BF, frequency of disordered eating behaviors, and body image dissatisfaction between sports categories. Conclusion: Nearly one-quarter of athletes showed disordered eating behaviors, which was associated with body image dissatisfaction. Athletes with higher %BF were more likely to be dissatisfied with body image. There was no difference in eating behavior and body image between athletes from different sports categories.

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“…Hereby, since weight losses are mostly achieved by performing the methods of food and fluid intake limitations in short time periods, this case especially leads to decreases in body fluid amount and muscle mass. Because of this, it is significant for assessing body composition to determine an athlete's physical situation during weight loss (Kukidome et al, 2008). This type of quick weight loss applied by the wrestlers bring significant objections and anxiety in terms of health (Alderman et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Acute Weight Loss on Body Composition, Self-esteem and Appearance Esteem before Competitions

Baştuğ¹,

Özdemir²,

Tanır³

et al. 2016

Journal of Education and Training Studies

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Weight loss in human body accompanies physical and psychological differences. In this study, it was aimed to see whether acute weight loss (dehydration) affected self-esteem and appearance esteem in the elite wrestlers before competitions. 38 professional wrestlers who had international competition experiences and were required to be in a lower weight class because of having more than the competition weight, participated in the research voluntarily. 1 st measurement 1 week before the competition, 2 nd measurement during the competition morning when class determination was done in accordance with body weight were performed in the participant wrestlers prior to acute weight loss. In addition to the athletes' body weight, body mass index (BMI), "the Rosenberg Self-Esteem Scale" for the determination of their self-esteem levels and "the Appearance Esteem Scale" for the determination of self-esteem associated with appearance were used. The participant wrestlers were professional, they often lost weight before competitions and reached their goal, that's why they had positive feelings, which gave rise to increases in self-esteem and appearance esteem values after weight loss.In conclusion, significant differences were found in body weight, BMI, self-esteem and appearance esteem values before and after weight loss (dehydration) of the wrestlers. A positive uprising was determined in the self-esteem and appearance esteem values after the wrestlers' weight loss. The participant wrestlers were professional, often experienced weight loss before competitions and had targeted weights, that's why they had positively emotional situations, which led to increases in their self-esteem and appearance esteem values.

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MRI evaluation of body composition changes in wrestlers undergoing rapid weight loss

Abstract: Rapid weight reduction reduced the wrestlers' cross-sectional areas of muscle and fat tissues, which tended to recover through rehydration after the weigh-in. These results suggest that rapid weight reduction of wrestlers induced changes in different regions of the body.

Cited by 42 publications

References 26 publications

Accuracy of DXA in estimating body composition changes in elite athletes using a four compartment model as the reference method

Accuracy of DXA in estimating body composition changes in elite athletes using a four compartment model as the reference method

Disordered eating behaviors and body image in male athletes

The Effect of Acute Weight Loss on Body Composition, Self-esteem and Appearance Esteem before Competitions

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