Monitoring External and Internal Loads of Brazilian Soccer Referees during Official Matches

Autor(es)

Costa, Eduardo C. ^[1] ; Vieira, Caio M. A. ^[1] ; Moreira, Alexandre ^[2] ; Ugrinowitsch, Carlos ^[2] ; Castagna, Carlo ^[3] ; Aoki, Marcelo S. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Fed Rio Grande do Norte, Dept Phys Educ, BR-59072970 Natal, RN - Brazil

^[2] Univ Sao Paulo, Sch Phys Educ & Sport, Dept Sport, BR-05508 Sao Paulo - Brazil

^[3] Italian Football Federat FIGC, Football Training & Biomech Lab, Tech Dept, Florence - Italy

^[4] Univ Sao Paulo, Sch Arts Sci & Humanities, BR-05508 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF SPORTS SCIENCE AND MEDICINE; v. 12, n. 3, p. 559-564, SEP 2013.
• Citações Web of Science: 20

Resumo

This study aimed to assess the external and internal loads of Brazilian soccer referees during official matches. A total of 11 field referees (aged 36.2 +/- 7.5 years) were monitored during 35 matches. The external (distance covered, mean and maximal speed) and internal load parameters (session ratings of perceived exertion {[}RPE] training load {[}TL], Edwards' TL, and time spent in different heart rate {[}HR] zones) were assessed in 3-4 matches per referee. External load parameters were measured using a wrist Global Positioning System (GPS) receiver. No differences in distance covered (5.219 +/- 205 vs. 5.230 +/- 237 m) and maximal speed (19.3 +/- 1.0 vs. 19.4 +/- 1.4 km.h(-1)) were observed between the halves of the matches (p > 0.05). However, the mean speed was higher in the first half of the matches (6.6 +/- 0.4 vs. 6.4 +/- 0.3 km.h(-1)) (p < 0.05) than in the second half. The mean HR during the matches was similar to 89% of HRmax. In similar to 95% of the matches, the referees demonstrated a HR >= 80% of HRmax. Nonetheless, the time spent at 90-100% of HRmax was higher in the first half (59.9 vs. 52.3%) (p < 0.05). Significant correlations between session RPE TL and distance covered at 90-100% of HRmax (r = 0.62) and session RPE TL and maximal speed (r = 0.54) (p < 0.05) were noted. Furthermore, there was a positive correlation between session RPE TL and Edwards' TL (r = 0.61) (p < 0.05). Brazilian soccer referees demonstrated high external and internal load demands during official matches. The portable GPS/HR monitors and session RPE method can provide relevant information regarding the magnitude of the physiological strain during official matches. (AU)

• Processo FAPESP: 12/20309-3 - Influência da maturação biológica sobre o processo de seleção de jovens atletas
• Beneficiário: Marcelo Saldanha Aoki
• Modalidade de apoio: Auxílio à Pesquisa - Regular