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Vol. 55. Issue 208.
Pages 137-142 (October - December 2020)
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Vol. 55. Issue 208.
Pages 137-142 (October - December 2020)
Original article
Neuromuscular fatigue effects on Hamstring to Quadriceps Ratio in young female players
Oriol Nevot-Casasa,b, Montse Pujol-Marzoa,c,
Corresponding author

Corresponding author.
, Berta Moreno-Planesa,b,d, Azahara Fort-Vanmeerhaeghee,f,g
a Consell Català de l’Esport, Generalitat de Catalunya, Barcelona, Spain
b Prointertial, Barcelona, Spain
c Faculty of Medicine and Health Science, Universitat Internacional de Catalunya, Barcelona, Spain
d Medical Services, Futbol Club Barcelona, Ciutat Esportiva Futbol Club Barcelona, Barcelona, Spain
e Faculty of Psychology, Education Science and Sport (FPCEE) Blanquerna, Universitat Ramon Llull, Barcelona, Spain
f School of Health Sciences (FCS) Blanquerna, Universitat Ramon Llull, Barcelona, Spain
g Segle XXI Female Basketball Team, Federació Catalana de Basquetbol, Esplugues de Llobregat, Spain
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Figures (2)
Tables (4)
Table 1. Participants’ anthropometric data (n: 30).
Table 2. Right and left leg H/Q Ratio before and after the 30–15 IFT.
Table 3. Quadriceps and hamstring muscle strength before and after the 30–15 IFT.
Table 4. RPE values pre and post 30–15 IFT.
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Additional material (1)

Two of the main modifiable risk factors for suffering an injury in the anterior cruciate ligament are known to be the Hamstring-to-Quadriceps (H/Q) Ratio and neuromuscular fatigue.

The main purpose of this research was to study the effect of neuromuscular fatigue on the H/Q Ratio and the maximum isometric strength of the quadriceps and hamstrings in teenage female basketball and handball players.

Material and methods

This is an experimental, pre-post intervention study with a sample of 19 female basketball players and 11 female handball players (17.02±1.19 yo, 177.8±7.2cm and 68.6±9.3kg). To assess muscle strength, a maximum isometric strength test was performed in a 90° hip and 60° knee position. The H/Q Ratio was then calculated. The 30–15 Intermittent Fatigue Test (30–15 IFT) was used to induce fatigue, measured using the Rating of Perceived Exertion (RPE) scale. A descriptive analysis and a Student's t-test were performed to study the differences in the H/Q Ratio, muscle strength and pre-post intervention fatigue.


Although the H/Q Ratio decreased after the 30–15 IFT, the differences were not statistically significant. Regarding strength values, the right and left quadriceps presented strength reductions of 4.52% and 5.55%, respectively. The reduction in strength was statistically significant (p0.05), especially in the right hamstring (7.3%) and in the left hamstring (7.5%).

The study conclusions suggest that leg muscular strength decreases after a fatigue test and that there is a tendency for the H/Q Ratio to decrease also.

Women's sports
H/Q Ratio
Muscle strength
muscle fatigue


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