The objective of the current study was to compare the changes in a fitness trait when selection is performed for 5, 10, and 20 generations on a production trait that influenced its expression. Responses to single-trait selection for growth based on phenotype or animal model predictions were compared by computer simulation. Two-trait index selection was performed when a trait, related to the fit...

OBJECTIVES To examine the association between physical fitness, cardiac parasympathetic control, and inflammatory cytokine responses to mental stress. Exercise and physical fitness may act as a buffer to the detrimental effects of psychosocial stress exposure. METHODS Participants were 207 men and women (52 +/- 3 years) drawn from the Whitehall II epidemiological cohort. Participants complete...

We consider the evolution of an asexually reproducing population in an uncorrelated random fitness landscape in the limit of infinite genome size, which implies that each mutation generates a new fitness value drawn from a probability distribution g(w). This is the finite population version of Kingman’s house of cards model [J.F.C. Kingman, J. Appl. Probab. 15, 1 (1978)]. In contrast to Kingman...

BACKGROUND Back pain and related disability seem to be increasing among older adults. Health-related fitness tests have been developed to identify individuals at risk for mobility difficulties. However, poor fitness as a risk factor for back problems has seldom been studied. The purpose of the current study was to investigate whether performance in fitness tests predicts back pain and related d...

Introduction Motor competence (MC) is an important factor in the development of health and fitness in adolescence. Aims This cross-sectional study aims to explore the distribution of MC across school students aged 13-14 years old and the extent of the relationship of MC to measures of health and fitness across genders. Methods A total of 718 participants were tested from three different sch...

Reproductive fitness of bacteria is a major factor in the evolution and persistence antimicrobial resistance may play an important role as pathogen severe infections. With computational approach to quantify growing competitively on agar plates, our high-throughput method has been designed obtain additional phenotypic data for analysis at low cost.