scholarly journals Detection of the electromechanical delay and its components during voluntary isometric contraction of the quadriceps femoris muscle

2014 ◽  
Vol 5 ◽  
Author(s):  
Haris Begovic ◽  
Guang-Quan Zhou ◽  
Tianjie Li ◽  
Yi Wang ◽  
Yong-Ping Zheng
Keyword(s):  
Isometric Contraction ◽  
Quadriceps Femoris ◽  
Electromechanical Delay ◽  
Quadriceps Femoris Muscle ◽  
Femoris Muscle

scholarly journals Evaluation of Gait Speed after Applying Kinesio Tape on Quadriceps Femoris Muscle in Patients with Knee Osteoarthritis

2018 ◽  
Vol 6 (8) ◽  
pp. 1394-1398 ◽  
Author(s):  
Klejda Tani ◽  
Irena Kola ◽  
Vjollca Shpata ◽  
Fregen Dhamaj
Keyword(s):  
Knee Osteoarthritis ◽  
Clinical Diagnosis ◽  
Gait Speed ◽  
Quadriceps Femoris ◽  
Walk Test ◽  
Kinesio Tape ◽  
Quadriceps Femoris Muscle ◽  
Increased Risk ◽  
Femoris Muscle ◽  
10 Meter Walk Test

BACKGROUND: Knee osteoarthritis is a chronic degenerative disease, known as the most common cause of difficulty walking in older adults and subsequently is associated with slow walking. Functional decline, increased risk of falls and the presence of pain are, in many studies, related to the muscle weakness caused by osteoarthritis especially weakness of the quadriceps muscles. Many studies have shown that the strength of the quadriceps femoris muscle can affect gait, by improving or weakening it. Kinesio Tape is a physiotherapeutic technique, which reduces pain and increases muscular strength by irritating the skin receptors.AIM: This study aimed to verify if the application of Kinesio Tape on quadriceps femoris muscle increases gait speed while decreasing the time needed to accomplish the 10-meter walk test in patients with knee osteoarthritis and also in subjects without knee osteoarthritis.METHOD: In this study, we observed the change of gait speed with the help of the 10-meter walk test before, one day and three days after the application of Kinesio Tape in quadriceps femoris muscle. We compared the results of the time needed to perform the 10-meter walk in two groups. In the first group, the Patients group, participated 102 out-patients with a clinical diagnosis of primary knee osteoarthritis, while in the second group, the Control group, participated 73 subjects with a main excluding criterion a clinical diagnosis of primary knee osteoarthritis.RESULTS: Our results indicated that there was a significant decrease of time needed to perform the 10-meter walk test in both groups three days after application of Kinesio Tape on quadriceps femoris muscle. However, there was not a significant change one day after the application of Kinesio Tape compared before its application in both groups.CONCLUSIONS: Our results indicated that there was a significant decrease in time needed to accomplish the 10-meter walk test. Kinesio Tape is a technique that can be used especially when changing walking stereotypes is a long-term goal of the treatment.

scholarly journals Effect of ingested sodium bicarbonate on muscle force, fatigue, and recovery

1997 ◽  
Vol 83 (2) ◽  
pp. 333-337 ◽  
Author(s):  
O. Verbitsky ◽  
J. Mizrahi ◽  
M. Levin ◽  
E. Isakov
Keyword(s):  
Sodium Bicarbonate ◽  
Isometric Contraction ◽  
Muscle Force ◽  
Enhanced Recovery ◽  
Maximal Oxygen Consumption ◽  
Bicycle Ergometer ◽  
Quadriceps Femoris ◽  
Acute Ingestion ◽  
Male Subjects ◽  
Femoris Muscle

Verbitsky, O., J. Mizrahi, M. Levin, and E. Isakov.Effect of ingested sodium bicarbonate on muscle force, fatigue, and recovery. J. Appl. Physiol. 83(2): 333–337, 1997.—The influence of acute ingestion of NaHCO3 on fatigue and recovery of the quadriceps femoris muscle after exercise was studied in six healthy male subjects. A bicycle ergometer was used for exercising under three loading conditions: test A, load corresponding to maximal oxygen consumption; test B, load in test A + 17%; test C, load in test B but performed 1 h after acute ingestion of NaHCO3. Functional electrical stimulation (FES) was applied to provoke isometric contraction of the quadriceps femoris. The resulting knee torque was monitored during fatigue (2-min chronic FES) and recovery (10-s FES every 10 min, for 40 min). Quadriceps torques were higher in the presence of NaHCO3( P < 0.05): with NaHCO3 the peak, residual, and recovery (after 40 min) normalized torques were, respectively, 0.68 ± 0.05 (SD), 0.58 ± 0.05, and 0.73 ± 0.05; without NaHCO3 the values were 0.45 ± 0.04, 0.30 ± 0.06, and 0.63 ± 0.06. The increased torques obtained after acute ingestion of NaHCO3 indicate the possible existence of improved nonoxidative glycolysis in isometric contraction, resulting in reduced fatigue and enhanced recovery.

scholarly journals Muscle wasting in intensive care patients: Ultrasound observation of the M. quadriceps femoris muscle layer

2008 ◽  
Vol 40 (3) ◽  
pp. 185-189 ◽  
Author(s):  
W Gruther ◽  
T Benesch ◽  
C Zorn ◽  
T Paternostro-Sluga ◽  
M Quittan ◽  
...  
Keyword(s):  
Intensive Care ◽  
Muscle Wasting ◽  
Muscle Layer ◽  
Quadriceps Femoris ◽  
Quadriceps Femoris Muscle ◽  
Intensive Care Patients ◽  
Femoris Muscle

scholarly journals Estimation of quadriceps femoris muscle dysfunction in the early period after surgery of the knee joint using shear-wave elastography

2018 ◽  
Vol 4 (1) ◽  
pp. e000381 ◽  
Author(s):  
Makoto Kawai ◽  
Keigo Taniguchi ◽  
Tomoyuki Suzuki ◽  
Masaki Katayose
Keyword(s):  
Shear Modulus ◽  
Knee Joint ◽  
Patient Group ◽  
Quadriceps Femoris ◽  
Control Group ◽  
Muscle Dysfunction ◽  
Shear Moduli ◽  
Quadriceps Femoris Muscle ◽  
Contraction Ratio ◽  
Femoris Muscle

ObjectivesOrthopaedic surgery of the knee joint results in functional deterioration of the quadriceps femoris muscle. However, little is known about quadriceps femoris muscle dysfunction in the early postsurgical period. Therefore, we examined the stiffness of the quadriceps femoris muscle in the early postsurgical period.MethodsSeven patients and seven healthy controls performed quadriceps contraction exercises. In resting and contraction conditions, the shear modulus, muscle thickness and pennation angle were measured for the vastus medialis (VM), vastus lateralis (VL) and the rectus femoris (RF) using ultrasound elastography.ResultsThe shear moduli of the VM, VL and RF in the control group did not significantly interact, while the shear moduli in the patient group did show a significant interaction. In the resting condition, there was no difference between the unaffected and affected sides in the patient group, but the shear moduli of the VM and VL in the contraction condition was significantly lower on the affected side than the unaffected side.The contraction ratios between muscles by limbs did not significantly interact. However, there were main effects due to muscle and limb factors. The VM and VL had a significantly higher contraction ratio than the RF, and the control and unaffected limbs had a higher contraction ratio than the affected limb.ConclusionThe results demonstrated a decrease in muscle stiffness during contraction in patients with quadriceps femoris dysfunction. Measurement of the shear modulus has potential as a new evaluation index and with high sensitivity to decreases in muscle contraction.

Effects of magnetic stimulation compared to electrical stimulation on muscle contraction in quadriceps femoris muscle of healthy subjects: A pilot study

2021 ◽  
Vol 2 (5) ◽  
Author(s):  
Ryosuke Nakanishi ◽  
◽  
Minoru Tanaka ◽  
Noriaki Maeshige ◽  
Hidemi Fujino ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Muscle Contraction ◽  
Healthy Subjects ◽  
Magnetic Stimulation ◽  
Muscle Thickness ◽  
Rectus Femoris ◽  
Superficial Layer ◽  
Quadriceps Femoris ◽  
Quadriceps Femoris Muscle ◽  
Femoris Muscle

Background/Aims: This study investigated whether pulsed magnetic stimulation contracts superficial and/or deep muscles compared with those induced by electrical stimulations, i.e., low- and kilohertzfrequency currents. Methods: Eight healthy subjects were recruited and measured the quadriceps femoris muscle thickness using ultrasound imaging, and Visual Analog Scale (VAS) for stimulation-induced pain during the same stimulation intensity. Results: Pulsed magnetic stimulation increased the thickness of rectus femoris muscle similar to other electrical stimulations, but not the vastus intermedius muscle. Meanwhile, the pain score of VAS caused by pulsed magnetic stimulation was lower than that by those electrical stimulations. Conclusions: These results suggest that pulsed magnetic stimulation is effective for the contraction of superficial layer muscles without stimulation-induced pain but not for contraction of deep layer muscles. Keywords: pulsed magnetic stimulation; electrical stimulation; stimulation-induced pain; muscle contraction.

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