scholarly journals Anticipatory Electromyographic Activity and Onset Time in Selected Muscles of Lower Limb Between the Active and Inactive Old Women

2019 ◽  
Vol 11 (2) ◽  
pp. 89-96
Author(s):  
Najme Noghani Ardestani ◽  
◽  
Rahman Sheikhhoseini ◽  
Farideh Babakhani ◽  
◽  
...  
Keyword(s):  
Lower Limb ◽  
Onset Time ◽  
Rectus Femoris ◽  
Biceps Femoris ◽  
Activity Level ◽  
Lower Limbs ◽  
Electromyographic Activity ◽  
Biceps Femoris Muscle ◽  
Rectus Femoris Muscle ◽  
Femoris Muscle

Introduction: This study aimed to investigate the onset time and the electromyographic activity level of the selected lower limb muscles in the active and inactive old women. Materials and Methods: In this case-control study, 28 old women with a Mean±SD age of 61.07±0.88 years were selected in the inactive (15 people) and active (13 people) groups. The electrical activity of the selected muscles of the lower limbs was collected by the EMG device in a stair down movement. Results: The onset time of tibialis anterior, vastus lateralis, and biceps femoris muscles are faster in the active group (p <0.05). Besides, the activity level of the rectus femoris muscle in the interval of 100 ms before the initial contact and the ratio of the vastus medialis muscle to the biceps femoris muscle was significantly lower (p <0.05) in the active group. Conclusion: It seems that the muscles of the lower limbs in the group of women with regular physical activity are activated faster than the inactive group and the decrease in the activity of the rectus femoris muscle and the ratio of the vastus medialis to the biceps femoris muscle in the active women may be accompanied by fatigue and reduced intra-articular forces. Therefore, it is recommended that old women participate in regular and active exercise programs to improve their onset times of muscle activity.

scholarly journals Timing of Rectus Femoris and Biceps Femoris Muscle Activities in Both Legs at Maximal Running Speed

2020 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Gaku Kakehata ◽  
Yuta Goto ◽  
Shigeo Iso ◽  
Kazuyuki Kanosue
Keyword(s):  
Rectus Femoris ◽  
Biceps Femoris ◽  
Running Speed ◽  
Biceps Femoris Muscle ◽  
Femoris Muscle

scholarly journals Third head of biceps femoris muscle-a case report

2021 ◽  
Vol 8 (4) ◽  
pp. 1343
Author(s):  
Surajit Ghatak ◽  
Sonali Adole ◽  
Debajani Deka ◽  
Muhamed Faizal
Keyword(s):  
Insertion Site ◽  
Biceps Femoris ◽  
Lower Limbs ◽  
Medical Sciences ◽  
Medial Condyle ◽  
Muscle Belly ◽  
Biceps Femoris Muscle ◽  
Long Head ◽  
The Right ◽  
Femoris Muscle

Sometimes variations in biceps femoris may be noticed like an accessory head of biceps femoris. Here during routine cadaveric dissection in the department of anatomy. All India institute of medical sciences, Jodhpur we found a case with an accessory head of biceps femoris in both the lower limbs. The muscle belly is originating from the fibers of long head of biceps femoris and going downward medially to get inserted to the medial condyle of tibia on its medial superior aspect. On the right-side insertion site is like a sheath and on half a way it is merging with medial intermuscular septum of thigh. On the left side insertion is first like a thin sheath and then a thin muscle belly. The muscle belly is thin as compared to the long and short head of the main muscle bellies. On the left side thickness is around 3.7 mm in the upper end and thinner in the lower end while on right side also it is around 3.75 mm. On right side length of muscle belly is around 5 cm and on left side it is around 5.5 cm muscle belly, then becomes a sheath with length around 0.5 mm and then again becomes a muscle belly of around 3.5 cm length. Short head is arising high up on the left side while on right side it is as normal.

scholarly journals One plus one: Two free flaps from same donor thigh for simultaneous coverage of two different defects

2016 ◽  
Vol 49 (02) ◽  
pp. 191-197
Author(s):  
Susmitha Bandi ◽  
Rayidi Venkata Koteswara Rao ◽  
Damalacheruvu Mukunda Reddy
Keyword(s):  
Femoral Artery ◽  
Lower Limb ◽  
Muscle Flap ◽  
Rectus Femoris ◽  
Free Flaps ◽  
Limb Defects ◽  
Circumflex Femoral Artery ◽  
Rectus Femoris Muscle ◽  
Alt Flap ◽  
Femoris Muscle

ABSTRACT Introduction: Primary microvascular reconstruction of multiple defects is challenging particularly if it has to be simultaneous. In trauma cases, harvesting two independent free flaps from different sites is very time-consuming and adds to morbidity. To eliminate these disadvantages, we sought to find out a reliable alternative method of harvesting two independent free flaps based on the descending branch of circumflex femoral artery, i.e., one anterolateral thigh (ALT) flap and one rectus femoris muscle flap. Aim: To study the feasibility of transferring two free flaps, i.e., ALT and rectus femoris muscle flap simultaneously from the same thigh for coverage of two different limb defects. Materials and Methods: From 2003 to 2012, five patients with two defects each were managed with a total of ten flaps harvested from five donor sites based on independent pedicles of descending branch of lateral circumflex femoral artery and used to cover severe injuries of extremities. Three cases had both lower limb defects and two cases had one upper limb and one lower limb defect. In each case, one ALT flap and one rectus femoris muscle flap were used for coverage. Results: All reconstructive procedures were completed without any major complications. All flaps survived well. There were no re-explorations and no complications related to donor sites. Conclusion: We conclude that our approach of simultaneous harvest of ALT and rectus femoris muscle from the same thigh offers two flaps for two different defects in terms of economy of donor site and operating time.

scholarly journals Modificación de patrones cinemáticos y electromiográficos en extremidad inferior por el uso de celular (Modification of kinematic and electromyographic patterns in the lower limb by the use of cell phones)

Retos ◽  
2020 ◽  
pp. 354-358
Author(s):  
Oscar David Valencia Cayupán ◽  
María José Hudson ◽  
Felipe Carpes ◽  
Marcos Kunzler ◽  
Fernanda Gándara ◽  
...  
Keyword(s):  
Lower Limb ◽  
Cell Phone ◽  
Sagittal Plane ◽  
Biomechanical Model ◽  
Rectus Femoris ◽  
Biceps Femoris ◽  
Lower Limbs ◽  
Emg Activity ◽  
Protective Strategy ◽  
Hip Flexion

Las lesiones de transeúntes relacionadas al uso de teléfono celular han aumentado en relación con el total de accidentes peatonales. El objetivo de este estudio fue comparar variables cinemáticas y electromiográficas de ambas extremidades inferiores al enfrentar un obstáculo, con (CC) y sin (SC) el uso de celular. Diez mujeres jóvenes fueron evaluadas, las cuales caminaron y enfrentaron un obstáculo CC y SC. Con un modelo biomecánico 3D se evaluó la cinemática de extremidad inferior (plano sagital de cadera, rodilla, tobillo, junto al “toe clearance”). Al mismo tiempo se registró la actividad electromiográfica (EMG) de los siguientes músculos: tibial anterior (TA), gastrocnemio medial (GM), recto anterior (RA) y bíceps femoral (BF). Se calculó la amplitud EMG promedio de cada músculo, y el porcentaje de coactivación muscular entre: TA-GM y RA-BF. Se analizó la estrategia de ambas piernas, considerando un primer (P1) y segundo paso (P2) al cruzar el obstáculo, comparando entre una marcha CC vs CS. Según los resultados, la marcha CC incrementa el toe clearance, flexión de cadera, y la amplitud del GM, observado tanto en P1 como P2 al cruzar el obstáculo. Adicionalmente, el P2 reveló un incremento en la flexión de rodilla y tobillo. Por otro lado, la amplitud del TA y coactivación muscular entre TA-GM también aumentó CC en el P2. En conclusión, las variables cinemáticas y electromiográficas en las extremidades inferiores se modifican al cruzar un obstáculo CC. Estos hallazgos podrían indicar una estrategia protectora durante la tarea dual evaluada, minimizar el riesgo de caída. Abstract. Pedestrian injuries related to the use of cell phone have increased in relation to the total number of pedestrian accidents. The aim of this study was to compare kinematic and electromyographic variables in both lower limbs at facing an obstacle, with (WC) and without (WoC) the use of a cell phone. Ten young women were evaluated, while walking and facing an obstacle WC and WoC. A 3D biomechanical model was used to evaluate the lower limb kinematics (hip, knee, ankle in the sagittal plane, together with “toe clearance”). At the same time, the electromyographic (EMG) activity was registered in the following muscles: tibialis anterior (TA), gastrocnemius medialis (GM), rectus femoris (RF) and biceps femoris (BF). The mean EMG amplitude of each muscle and the muscular coactivation percentage between: TA-GM and RA-BF were calculated. The strategy for both lower limbs considering the first (P1) and the second step (P2) were analyzed when crossing the obstacle, comparing between gait WC vs WoC. According to results, the gait WC increase the toe clearance, hip flexion, and the GM amplitude, observed both in P1 as P2 when the person crossed the obstacle. Furthermore, the P2 revealed an increase in the knee and ankle flexion. On the other hand, the TA amplitude and the muscular coactivation between TA-GM also increased WC in the P2. In conclusion, the kinematic and electromyographic variables in the lower limbs are modified when crossing an obstacle WC. These findings could indicate a protective strategy during the dual-task evaluated, minimizing the risk of falling.

Effect of Acupuncture on Gait in Parkinson—s Disease: A Case Report

2015 ◽  
Vol 33 (4) ◽  
pp. 325-328 ◽  
Author(s):  
Shimpei Fukuda ◽  
Masato Egawa
Keyword(s):  
Case Report ◽  
Biceps Femoris ◽  
Muscle Stiffness ◽  
Lower Limbs ◽  
Thigh Muscle ◽  
Repeated Treatment ◽  
Muscle Tonus ◽  
Semitendinosus Muscle ◽  
Biceps Femoris Muscle ◽  
Femoris Muscle

This case report describes the treatment of gait disturbance in a 64-year-old woman with Parkinson's disease. Needling for 10 min of areas of muscle stiffness and of muscle tonus areas in both lower limbs resulted in immediate temporary alleviation of muscle stiffness and muscle tonus of the bilateral anterior surface of the thigh muscle, the biceps femoris muscle, and the semitendinosus muscle for the duration of the treatment, with improvement in the disturbed gait of the patient. This response occurred regularly on repeated treatment, and was maintained between treatments.

Comparison of Muscle Activity Using Unstable Devices During a Forward Lunge

2020 ◽  
Vol 29 (4) ◽  
pp. 394-399
Author(s):  
Lucinda E. Bouillon ◽  
Michael Hofener ◽  
Andrew O’Donnel ◽  
Amanda Milligan ◽  
Craig Obrock
Keyword(s):  
Muscle Activity ◽  
Repeated Measures ◽  
Rectus Femoris ◽  
Random Order ◽  
Biceps Femoris ◽  
Lateral Gastrocnemius ◽  
Biceps Femoris Muscle ◽  
Repeated Measures Analysis ◽  
Closed Chain ◽  
Femoris Muscle

Context: Unstable devices in various forms are used as therapeutic adjuncts for prevention or following an injury. A slip-over-the-shoe design with inflatable domes (STEPRIGHT® Stability Trainer) was developed to improve balance. It is unknown how this unstable device affects muscle activity during a closed-chain exercise such as the forward lunge. Objective: To compare muscle activity across 3 surfaces (STEPRIGHT®, Both Sides Up [BOSU®] Balance Trainer, and firm) during a forward lunge. Design: Within-subject, repeated measures. Setting: University physical therapy research laboratory. Participants: A total of 20 healthy, recreationally active subjects (23.4 [1.47] y, 172.7 [14.7] cm, 71.6 [16.8] kg). Intervention: Each subject performed 1 set of 10 repetitions of forward lunge exercise in random order with STEPRIGHT®, BOSU®, and firm surface. Main Outcome Measures: Surface electromyography data, normalized to maximum voluntary isometric contractions (%MVIC), was used to assess muscle activity on rectus femoris, vastus medialis oblique (VMO), biceps femoris, lateral gastrocnemius, fibularis longus, and tibialis anterior. Results: The repeated-measures analysis of variance determined that there was a significant effect for surface type. During the descent of the lunge, the STEPRIGHT® elicited higher rectus femoris (33% [27%] MVIC) compared with BOSU® (22% [14%] MVIC) and VMO (44% [15%] MVIC) on STEPRIGHT® compared with firm (38% [11%] MVIC) (P < .05). During the ascent of the lunge, the rectus femoris (38% [27%] MVIC) using STEPRIGHT® was higher than BOSU® (24% [16%] MVIC), and STEPRIGHT® elicited higher VMO (65% [20%] MVIC) versus BOSU® (56% [19%] MVIC) (P ≤ .01). The STEPRIGHT® for fibularis longus was higher (descent: 51% [20%] MVIC, ascent: 52% [22%] MVIC) than BOSU® (descent: 36% [15%] MVIC, ascent: 33% [16%] MVIC) or firm (descent: 33% [12%] MVIC, ascent: 35% [15%] MVIC) (P < .001). Conclusions: Clinicians may choose to use the STEPRIGHT® for strengthening VMO and fibularis longus muscles, as these were over 41% MVIC or any of the 3 surfaces for endurance training (<25% MVIC) for biceps femoris muscle. This information may be helpful in exercise dosage for forward lunges when using STEPRIGHT®, BOSU®, or a firm surface.

Kinematic and Electromyographic Analysis of the Trunk and Lower Limbs During Walking in Negative-Heeled Shoes

2007 ◽  
Vol 97 (6) ◽  
pp. 447-456 ◽  
Author(s):  
Jing Xian Li ◽  
Youlian Hong
Keyword(s):  
Tibialis Anterior ◽  
Rectus Femoris ◽  
Biceps Femoris ◽  
Mean Amplitude ◽  
Erector Spinae ◽  
Lower Limbs ◽  
Electromyographic Activity ◽  
Lateral Gastrocnemius ◽  
Electromyographic Analysis ◽  
Sports Shoes

Background: We investigate kinematic adaptation and muscle activities in the trunk and lower extremities of healthy subjects during treadmill walking in negative-heeled sports shoes versus normal sports shoes. Methods: Thirteen healthy female university students participated in the study. We analyzed sagittal-movement kinematics and electromyographic findings from the erector spinae, rectus abdominus, rectus femoris, biceps femoris, tibialis anterior, and lateral gastrocnemius muscles of the dominant side in two shod conditions. Results: Negative-heeled gait is characterized by faster cadence, shorter stride length, increased maximal extension angles in the trunk and hip, increased flexion angle in the knee, larger dorsiflexion in the stance phase, and a larger range of motion of the ankle joint. Negative-heeled gait resulted in a significantly larger integrated electromyographic value, a longer duration of electromyographic activity, and a higher mean amplitude of electromyographic activity in the tibialis anterior, lateral gastrocnemius, and biceps femoris muscles. Conclusions: Negative-heeled gait compared with normal gait places a higher physiologic demand on the tibialis anterior, lateral gastrocnemius, and biceps femoris muscles when walking on a level surface. Thus, negative-heeled shoes could be of value if used in an exercise rehabilitation or training program where inclined walking is not available owing to a flat terrain. (J Am Podiatr Med Assoc 97(6): 447–456, 2007)

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