Diacutaneous fibrolysis is a physiotherapeutic instrumental technique, used to treat musculoskeletal conditions causing pain and/or movement restriction . It is applied by means of metallic hooks, ending in a spatula with beveled edges, that seems to allow a better pressure distribution on the skin and a deeper and more precise application, compared to the manual approach. Recent studies indicate positive responses regrading pain intensity decrease in sports people suffering anterior knee pain, improving range of motion in subacromial impingement syndrome, improving sensory conductivity in symptomatic patients with carpal tunnel syndrome, decreased pain in patients with chronic epicondialgia or improveing function athletes with anterior knee pain. However, the specific action mechanism, have not been investigated in depth yet. Clinical studies show improvements in strength, pain intensity, range of motion, or function. But whether if this effect is produced by changes in tissue tension or by reflexes effects, as has been suggested before, still unclear. There are no studies evaluating its effects on posterior muscular chain of lower extremity in athletes, where FD effects on neuromuscular response could be more evident due to the overload involved on this area. Thus, the aim of this study is to evaluate the immediate, and after 30 minutes, effects of a single diacutaneous fibrolysis session on contractile and viscoelastic muscle properties and mechanosensitibity by means of tensiomyography, myotonometry and algometry on posterior muscular chain of lower limb in athletes.
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Contraction time changes
Timeframe: at baseline, after diacutaneous fibrolysis intervention and 30 minutes later.
Relaxation time changes
Timeframe: at baseline, after diacutaneous fibrolysis intervention and 30 minutes later.
Maximal Displacement changes
Timeframe: at baseline, after diacutaneous fibrolysis intervention and 30 minutes later.
Contraction velocity changes
Timeframe: at baseline, after diacutaneous fibrolysis intervention and 30 minutes later.
Muscle tone changes
Timeframe: at baseline, after diacutaneous fibrolysis intervention and 30 minutes later.
Muscle Stiffness changes
Timeframe: at baseline, after diacutaneous fibrolysis intervention and 30 minutes later.
Mechanosensibility changes
Timeframe: at baseline, after diacutaneous fibrolysis intervention and 30 minutes later.