Search results for "Biceps"

REGIONAL DIFFERENCES IN BICEPS FEMORIS FASCICLE LENGTH AND PENNATION ANGLE AFTER A SIMULATED SOCCER MATCH

2017

Background Hamstring Strain Injuries (HSIs) represent 12% of all injuries in soccer players, and their incidence has increased in recent years. Between 53%-84% of HSIs involve the Biceps femoris muscle (BF). Recent studies have shown that soccer players with shorter BF fascicle length (FL) suffer more HSIs and exhibit regional differences in FL and pennation angle (PA) along BF. It is unclear whether there is any regional difference in the degree of change of these parameters after a soccer match. Objective Describe changes in BF muscle architecture after a simulated soccer match. Design Controlled laboratory study. Pre and Post single session. Setting Laboratory. Amateur Level. Participant…

Study of the Biceps Fatigue after Surgery on the Long Head of Biceps Tendon in Male Heavy Workers. A Prospective Randomized Clinical Trial Comparing …

2020

Neuromuscular function during prolonged pedalling exercise at different cadences

2005

Aim: The purpose of the present work was to assess the strategies set by the central nervous system in order to provide the power output required throughout a prolonged (1-h) pedalling exercise performed at different cadences (50 rpm, 110 rpm and the freely chosen cadence). Methods: Neuromuscular (NM) activity of vastus lateralis, rectus femoris, biceps femoris and gastrocnemius lateralis muscles was studied quantitatively [root-mean square (RMS) and mean power frequency (MPF)] and qualitatively (timing of onset and offset of muscle bursts during crank cycle). Results: The present results showed that increased cadence resulted in earlier muscle activation in crank cycle. The influence of ca…

Short-interval intracortical inhibition is not affected by varying visual feedback in an isometric task in biceps brachii muscle

2013

Short-interval intracortical inhibition (SICI) of the primary motor cortex (M1) appears to play a significant role in skill acquisition. Consequently, it is of interest to find out which factors cause modulation of SICI. Purpose: To establish if visual feedback and force requirements influence SICI. Methods: SICI was assessed from 10 healthy adults (5 males and 5 females aged between 21 and 35 years) in three submaximal isometric elbow flexion torque levels (5%, 20% and 40% of maximal voluntary contraction [MVC]) and with two tasks differing in terms of visual feedback. Single-pulse and paired-pulse motor evoked potentials (MEPs), supramaximal M-wave and background surface electromyogram (s…

THU0713 How the variation in the lumbopelvic patterns of movement affects the neuromotor control of the biceps femoris during trunk forward bending

2017

Background Trunk forward bending is one of the most common activities in daily living; it is a two-part movement involving the lumbar spine flexion and pelvis rotation at hip joint. The pattern of movement during forward bending was defined as the relative contribution of the lumbar spine to pelvis motion, and was expressed as the ratio between the ranges of lumbar spine motion to pelvis motion (L/P), which, calculated at certain degrees of trunk flexion during the entire movement, provides the lumbo-pelvic rhythm. This is associated with a specific pattern of activation for back and hip extensor muscles which was coined as flexion relaxation phenomenon, observed either in the erector spina…

Uz ultrasonogrāfiju balstīta augšdelma muskuļaudu morfometriska izpēte

2019

Tēmas aktualitāte. Sasniegumi attēldiagnostikas metožu attīstībā rada jaunas iespējas muskuļu morfometrijas pētīšanai in vivo. Plašas pieejamības un relatīvi nelielu izmaksu dēļ pētnieki cenšas attīstīt ultrasonogrāfijas metodes un pierādīt to augsto uzticamību muskuļu kustību pētīšanai in vivo. Dziļāka muskuļu morfometrijas izpratne ļautu labāk saprast kustību biomehānismu un muskuloskeletālās sistēmas funkcionālās norises. Diplomdarba mērķis. Izstrādāt un aprobēt metodoloģiju ultrasonogrāfiskai m. biceps brachii morfometrijai kontrakcijas laikā. Metodes un materiāli. Eksperimentāla tipa pētījumā piedalījās pieci veseli vīrieši vecumā no 25 līdz 35 gadiem. Eksperimenta laikā katram dalībni…

How does a simulated soccer match affect regional differences in biceps femoris muscle architecture?

2017

Soccer is played by thousands of athletes across the globe and its participation increases the overall risk of injury, in particular, hamstring strain injuries (HSI). Biceps femoris (BF) has been shown to be involved the in 5 out of 6 HSI cases and risk factors including fatigue and short BF fascicle length (FL) have been identified. Furthermore, previous studies suggest that different muscle regions may undergo different strains during dynamic tasks, which could contribute to injury risk. The primary aim of this study was to evaluate the effects of a soccer match on regional differences in the BF muscle architecture. A secondary aim was to assess the reliability of the extended field of vi…