Selected isokinetic tests in knee injury prevention
Journal Title: Biology of Sport - Year 2010, Vol 27, Issue 1
Abstract
Ensuing from isokinetic measurements, the conventional Hcon/Qcon ratio of muscle balance is used as an index for comparing proper relations between the values of strength of knee flexors and extensor muscle. Its abnormal values might indicate pathology of the musculotendinous complex. The aim of the study was to present the possibility of using this ratio as one of the objective identifiers enabling the assessment of knee injury risk in sports. All participants (n=48) were divided into 3 groups: group A (n=16, healthy competitors), group B (n=16, athletes with minor injuries), group C (n=16, competitors with serious injuries), depending on the degree of knee injury. All subjects performed an isokinetic test for knee extensors and flexors at angular velocities of 60/s and 120/s. Average peak torque (APT) value of knee flexors and extensors, and the value of Hcon/Qcon ratio was analyzed. Both values were calculated in relation to body mass (Nm/kg). Bilateral comparison of isokinetic test parameters confirmed the decrease of quadriceps muscle strength values for the injured extremity in groups B and C. Statistically significant difference was noted for Hcon/Qcon ratio between group A and C, as well as B and C. Hence, the value of conventional Hcon/Qcon ratio can be used for the prevention of sports related injuries.
Authors and Affiliations
M Grygorowicz, J Kubacki, W Pilis, K Gieremek, R Rzepka
Keywords
Related Articles
- EP ID EP58992
- DOI -
- Views 112
- Downloads 0
Metabolic effect of strength endurance exercise complex in young cross-country skiers
The aims of this study were to: 1) evaluate the metabolic changes of strength endurance exercises complex in young male cross-country skiers using heart rate (HR) and blood lactate (BLA) concentration indices; and 2) com...
The abuse of anabolic-androgenic steroids by Polish school-aged adolescents
Although anabolic-androgenic steroids (AAS) are perceived primarily as doping agents for athletes, these substances are also used by adolescents for aesthetical purposes. The aim of this study was to determine the knowle...
The effect of cumulative fatigue on activity profiles of professional soccer players during a congested fixture period
The aim of this study was to examine the effect of a succession of matches on the physical performance of elite soccer players. Forty-two players of a professional team from the Spanish Soccer League in the 2005-2006 sea...
The effect of unloading and reloading on the extracellular matrix in skeletal muscle: changes in muscle strength and motor activity
During three weeks of hindlimb suspension muscle mass decreased 36% (p<0.05) in Soleus (Sol) muscle, 17% (p<0.05) in Gastrocnemius (GM) and had tendences to decrease in plantaris (Pla) (15%) and in extensor...
Anthropometric characteristics and somatotype of young Greek rowers
This study examined selected anthropometric characteristics of young rowers and compared them with those of senior national level athletes and untrained children, in order to establish a rowing specific anthropometric pr...