Journal of
the Nigeria Society of Physiotherapy

  • Abbreviation: J. Nig. Soc. Physiother.
  • Language: English
  • ISSN: 0331-3735
  • DOI: 10.5897/JNSP
  • Start Year: 2002
  • Published Articles: 55

Full Length Research Paper

Hamstring and quadriceps strength ratio: effect of age and gender

Jaiyesimi AO
  • Jaiyesimi AO
  • Department of Physiotherapy, College of Medicine, University of Ibadan, Ibadan, Nigeria.
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Jegede JA
  • Jegede JA
  • Department of Physiotherapy, College of Medicine, University of Ibadan, Ibadan, Nigeria.
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  • Article Number - 93E96E765319
  • Vol.15(2), pp. 54-58 , December 2005
  •  Received: 30 October 2005
  •  Accepted: 30 November 2005
  •  Published: 31 December 2005


This study was carried out to investigate how age and gender influence hamstring-quadriceps (knee flexor-extensor) muscle strength ratio in a Nigerian urban population. One hundred and fifty apprently healthy male and female subjects in 3 age groups (group I, 11-20 years; group II, 21-40 years and group III, 41-60 years) participated. The hamstrings and quadriceps isometric muscle strength of all the patients was measured and their ages were recorded. The hamstring-quadriceps strength ratio for each subject was also calculated. The results showed that the hamstring muscles of the subjects have a strength that is about half the strength of the ipsilateral quadricepsfemoris muscle in each of the groups. A comparison of hamstring­ quadriceps muscle strength ratio across the age groups releaved no significant difference among both male and female subjects (p>0.05). No significant gender difference was found  among the subjects in the  age  groups  11-20  years  and   41-60  years (p >0.05) but in the age group 21-40 years the male subjects  had  a  significantly   higher  Hamstring­ Quadriceps strength ratio than their female counterparts  (p <0.05). It was concluded that age has no effect on hamstring/quadriceps (kneeflexor! extensor) strength ratio, whether in female or male individuals, and that male and female variation is related to a sense of competitiveness, societal achievement expectation and propensity to display prowess.
Key words: muscular strength, hamstring/quadriceps strength ratio, age and sex.