Body composition among long distance runners

Abstract

SUMMARY OBJECTIVE The current study aimed to examine the body composition of adult male ultra-trail runners (UTR) according to their level of participation (regional UTR-R, vs. national UTR-N). METHODS The sample was composed of 44 adult male UTR (aged 36.5±7.2 years; UTR-R: n=25; UTR-N: n=19). Body composition was assessed by air displacement plethysmography, bioelectrical impedance, and dual-energy X-ray absorptiometry. In addition, the Food Frequency Questionnaire (FFQ) was applied. A comparison between the groups was performed using independent samples t-test. RESULTS Significant differences between groups contrasting in the competitive level were found for chronological age (in years; UTR-R: 38.8±8.2 vs. UTR-N: 33.5±4.1); body density (in L.kg-1; UTR-R: 1.062±0.015 vs. UTR-N: 1.074±0.009); and fat mass (in kg; UTR-R: 12.7±6.8 vs. UTR-N: 7.6±2.7). CONCLUSION UTR-N were younger, presented higher values for body density, and had less fat mass, although no significant differences were found for fat-free mass. The current study evidenced the profile of long-distance runners and the need for weight management programs to regulate body composition.

Vo2max in Runners: With/Without the Use of Disposable Masks

“…Therefore, in relation to the %F, it is suggested that runners seek help from a qualified health professional to reach their ideal weight, as there was a correlation between the %F ratings (above average) with the BMI, showing that overweight is related to a high percentage of fat mass, and offering a risk to the runner's health, and affecting performance. Reinforcing with the sample by Rosado et al (2020), composed of 44 adult male runners (36.5±7.2 years). Body composition revealed significant differences (higher body density and lower fat mass), reinforcing the existence of weight control programs to regulate body composition.…”