Monitoring of immunological parameters in adolescent basketball athletes during and after a sports season

Abstract

The objective of the present study was to monitor the immunological and hormonal responses and the occurrence of upper respiratory symptoms in adolescent basketball athletes during the different stages of a sports season. Anthropometric measures, biochemical analyses (interleukin-6, interleukin-10, tumour necrosis factor-alpha, C-reactive protein, testosterone and cortisol), neuromuscular evaluations (standing vertical jumping ability, agility and estimated VO_2max) and leukocyte counts were performed at four moments: 72 h before the season (?72 h); before the season (Pre-season); after six weeks, at the end of the preparatory period (Preparatory); and after 20 weeks, at the end of the competitive period (Competitive). Also, the occurrence of upper respiratory symptoms was collected weekly during all stages of the season. There were significant increases in monocytes, cortisol, tumour necrosis factor-alpha and C-reactive protein at the Competitive moment as compared to the Pre-season. In addition, interleukin-10 decreased at the Competitive moment as compared to the Pre-season. Occurrence of upper respiratory symptoms demonstrated increases (38%) during the competitive period as compared to the preparatory. These results suggest that periods of training and competition could increase the occurrence of upper respiratory symptoms in adolescent athletes and this may be due to the unwanted effects of an inflammatory process in response to the excessive stress of training and competition.     

Values and work environment: Mapping 32 occupations

The study addresses the relationship between values and occupations. Israeli workers (N=652; mean age=47; 43% male) in 32 occupations reported their values using the Portrait Value Questionnaire (Schwartz, Melech, Lehmann, Burgess, Harris, &; Owens, 2001), and value scores were aggregated within occupations. Occupations were classified according to the Holland (1985) typology. Enterprising work environments correlated negatively with universalism values. Social environments correlated positively with benevolence and universalism values and negatively with power and achievement. The artistic environment correlated negatively with conformity values. Investigative environments correlated positively with self-direction values and negatively with tradition. A COPLOT analysis of occupational value priorities yielded meaningful clusters of occupations, each characterized by a distinct value profile, and fitting the Holland typology. The findings point to the importance of values in vocational behavior.