New Equations for Prediction of Minimal Weight in High School Wrestlers.

Thorland, W.; Bowers, Richard; Housh, Terry J.; Johnson, Gregory E.; Kelly, J.; Lohman, T. G.; Oppliger, Robert A.; Tcheng, K.; Tipton, Charles M.

doi:10.1249/00005768-198904001-00430

Cited by 7 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Produced on 860 wrestlers across five universities, the study tested the validity of 16 equations, the best of which estimated the densitometry-derived minimum weight with an SEE of 2.4 kg based on the sum of three skinfolds [64] .…”

Section: Field Methodsmentioning

confidence: 99%

Current Status of Body Composition Assessment in Sport

et al. 2012

View full text Add to dashboard Cite

Dette er siste tekst-versjon av artikkelen, og den kan inneholde små forskjeller fra forlagets pdf-versjon. Forlagets pdf-versjon finner du på link.springer.com: http://dx.doi.org/10.2165/11597140-000000000-00000 This is the final text version of the article, and it may contain minor differences from the journal's pdf version. The original publication is available at link.springer.com: http://dx.doi.org/10.2165/11597140-000000000-00000 . Figure 3. Semi-automatic image evaluation: The edge detection algorithm for subcutaneous adipose tissue (SAT) thickness determination enables selecting areas of interest, distances (d US ) measurement series, color-coding of distance values, and statistical evaluations [48] . In this example of a SAT-layer above the triceps muscle, with the transducer held parallel to the humerus, 119 d US values ranging from 2.3 mm to 4.3 mm were automatically detected by the algorithm; the median was 3.4 mm (c = 1470 m/s). Layers and interfaces: A: gel, B: gel-epidermis, C: dermis, D: dermis-SAT, E: SAT, F: SAT-fascia of muscle, G: muscle. [77] . Abbreviations: mid dist = middle distance track runners; long dist = long distance runners; Scot long dist = Scottish long distance runners; SASI mid dist = South Australian Sports Institute middle distance track runners; SASI sprint = sprint runners; SASI jump = jumpers. Figure 6. Selected skinfold ratios in extremely lean male and female endurance athletes, and mean values from 106 male and 33 female athletes [80] . 4 ABSTRACTQuantifying human body composition has played an important role in monitoring all athlete performance and training regimens, but especially so in gravitational, weight class and aesthetic sports wherein the tissue composition of the body profoundly affects performance or adjudication. Over the past century, a myriad of techniques and equations have been proposed, but all have some inherent problems, whether in measurement methodology or in the assumptions they make. To date, there is no universally applicable criterion or "gold standard" methodology for body composition assessment.Having considered issues of accuracy, repeatability and utility, the multi-component model might be employed as a performance or selection criterion, provided the selected model accounts for variability in the density of FFM in its computation. However, when profiling change in interventions, single methods whose raw data are surrogates for body composition (with the notable exception of the BMI) remain useful.

show abstract

Section: Field Methodsmentioning

confidence: 99%

Current Status of Body Composition Assessment in Sport

et al. 2012

View full text Add to dashboard Cite

show abstract

“…Body mass was measured on a scale (Soehnle, Sao Paulo, Brazil) with maximum capacity of 200 kg and precision of 100 g. Height was measured using a stadiometer coupled to the scale (accuracy of 1 cm). Body density was estimated indirectly (Lange Skinfold Caliper; Beta Technology, Santa Cruz, CA) using the equation of Thorland et al 22 for wrestlers:…”

Section: Pretesting Proceduresmentioning

confidence: 99%

Use of Cold-Water Immersion to Reduce Muscle Damage and Delayed-Onset Muscle Soreness and Preserve Muscle Power in Jiu-Jitsu Athletes

Fonseca

Brito

Silva

et al. 2016

Journal of Athletic Training

View full text Add to dashboard Cite

Context: Cold-water immersion (CWI) has been applied widely as a recovery method, but little evidence is available to support its effectiveness.Objective: To investigate the effects of CWI on muscle damage, perceived muscle soreness, and muscle power recovery of the upper and lower limbs after jiu-jitsu training.Design: Crossover study. Setting: Laboratory and field. Patients or Other Participants: A total of 8 highly trained male athletes (age ¼ 24.0 6 3.6 years, mass ¼ 78.4 6 2.4 kg, percentage of body fat ¼ 13.1% 6 3.6%) completed all study phases.Intervention(s): We randomly selected half of the sample for recovery using CWI (6.08C 6 0.58C) for 19 minutes; the other participants were allocated to the control condition (passive recovery). Treatments were reversed in the second session (after 1 week).Main Outcome Measure(s): We measured serum levels of creatine phosphokinase, lactate dehydrogenase (LDH), aspartate aminotransferase, and alanine aminotransferase enzymes; perceived muscle soreness; and recovery through visual analogue scales and muscle power of the upper and lower limbs at pretraining, postrecovery, 24 hours, and 48 hours.Results: Athletes who underwent CWI showed better posttraining recovery measures because circulating LDH levels were lower at 24 hours postrecovery in the CWI condition (441.9 6 81.4 IU/L) than in the control condition (493.6 6 97.4 IU/L; P ¼ .03). Estimated muscle power was higher in the CWI than in the control condition for both upper limbs (757.9 6 125.1 W versus 695.9 6 56.1 W) and lower limbs (53.7 6 3.7 cm versus 35.5 6 8.2 cm; both P values ¼ .001). In addition, we observed less perceived muscle soreness (1.5 6 1.1 arbitrary units [au] versus 3.1 6 1.0 au; P ¼ .004) and higher perceived recovery (8.8 6 1.9 au versus 6.9 6 1.7 au; P ¼ .005) in the CWI than in the control condition at 24 hours postrecovery.Conclusions: Use of CWI can be beneficial to jiu-jitsu athletes because it reduces circulating LDH levels, results in less perceived muscle soreness, and helps muscle power recovery at 24 hours postrecovery.Key Words: creatine kinase, cryotherapy, L-lactate dehydrogenase, martial arts, muscle power Key PointsCold-water immersion may be beneficial to jiu-jitsu athletes because it decreased markers of muscle damage. Cold-water immersion reduced the perception of muscle pain. Cold-water immersion assisted in the recovery of the upper and lower limbs. Jiu-jitsu athletes could use cold-water immersion to improve performance and physiologic status, especially during training phases in which more intensive sessions are conducted and at the beginning of the season.

show abstract

“…Cable dynamometers are only used to measure isometric strength, since they are unable to allow joint movement 45 . This system may be efficient for individuals with osteoarticular abnormalities or movement difficulties, or for bedridden patients.…”

Section: Cable Dynamometry: Isometric Strengthmentioning

confidence: 99%