Leg extensor muscle characteristics, running speed and serum testosterone were studied in sixteen males and twelve female sprinters. The rise of center of gravity was measured during squat jumps executed without (SJ) and with extra loads (SJbm), counter movement jump (CMJ) and continuous jumping (CJ) for 5 s. Nine females and nine males performed also half-squat exercises with extra loads ranging from 50% to 200% of the subject's body mass (bm). Average mechanical power (P), force (F) and velocity (v) were calculated and measured during half-squat exercises using the Ergopower®. Total serum testosterone (TT) was determined in venous blood. In women, 60 m dash, SJ, CMJ and CJ performances were significantly lower (P<0.001) than men. Gender differences were not found in F during half-squat exercises and in SJbm. Women demonstrated significantly higher ratios CMJ:SJ and CJ:SJ than men. With loads 50-100 % of bm men demonstrated greater v and P than women. It was suggested that high testosterone level in men might be a factor ensured superiority in explosive power and speed, but not in muscle strength adjusted to body mass.

Bosco, C., Tsarpela, O., Foti, C., Cardinale, M., Tihanyi, J., Bonifazi, M., et al. (2002). Mechanical behaviour of leg extensor muscles in male and female sprinters. BIOLOGY OF SPORT, 19(3), 189-202.

Mechanical behaviour of leg extensor muscles in male and female sprinters

FOTI, CALOGERO;
2002-01-01

Abstract

Leg extensor muscle characteristics, running speed and serum testosterone were studied in sixteen males and twelve female sprinters. The rise of center of gravity was measured during squat jumps executed without (SJ) and with extra loads (SJbm), counter movement jump (CMJ) and continuous jumping (CJ) for 5 s. Nine females and nine males performed also half-squat exercises with extra loads ranging from 50% to 200% of the subject's body mass (bm). Average mechanical power (P), force (F) and velocity (v) were calculated and measured during half-squat exercises using the Ergopower®. Total serum testosterone (TT) was determined in venous blood. In women, 60 m dash, SJ, CMJ and CJ performances were significantly lower (P<0.001) than men. Gender differences were not found in F during half-squat exercises and in SJbm. Women demonstrated significantly higher ratios CMJ:SJ and CJ:SJ than men. With loads 50-100 % of bm men demonstrated greater v and P than women. It was suggested that high testosterone level in men might be a factor ensured superiority in explosive power and speed, but not in muscle strength adjusted to body mass.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore MED/34 - Medicina Fisica e Riabilitativa
English
Muscle power; Serum testosterone; Sex difference; Stretch-shortening cycle
Bosco, C., Tsarpela, O., Foti, C., Cardinale, M., Tihanyi, J., Bonifazi, M., et al. (2002). Mechanical behaviour of leg extensor muscles in male and female sprinters. BIOLOGY OF SPORT, 19(3), 189-202.
Bosco, C; Tsarpela, O; Foti, C; Cardinale, M; Tihanyi, J; Bonifazi, M; Viru, M; Viru, A
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/51127
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact