scholarly journals The Effect of NeuroMuscular Electrical Stimulation on Quadriceps Strength and Knee Function in Professional Soccer Players: Return to Sport after ACL Reconstruction

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
J. Taradaj ◽  
T. Halski ◽  
M. Kucharzewski ◽  
K. Walewicz ◽  
A. Smykla ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Acl Reconstruction ◽  
Neuromuscular Electrical Stimulation ◽  
Exercise Program ◽  
Return To Sport ◽  
Quadriceps Muscle ◽  
Quadriceps Strength ◽  
Knee Function ◽  
Soccer Players ◽  
Professional Soccer

The aim of this study was to assess the clinical efficacy and safety of NMES program applied in male soccer players (after ACL reconstruction) on the quadriceps muscle. The 80 participants (NMES = 40, control = 40) received an exercise program, including three sessions weekly. The individuals in NMES group additionally received neuromuscular electrical stimulation procedures on both right and left quadriceps (biphasic symmetric rectangular pulses, frequency of impulses: 2500 Hz, and train of pulses frequency: 50 Hz) three times daily (3 hours of break between treatments), 3 days a week, for one month. The tensometry, muscle circumference, and goniometry pendulum test (follow-up after 1 and 3 months) were applied. The results of this study show that NMES (in presented parameters in experiment) is useful for strengthening the quadriceps muscle in soccer athletes. There is an evidence of the benefit of the NMES in restoring quadriceps muscle mass and strength of soccer players. In our study the neuromuscular electrical stimulation appeared to be safe for biomechanics of knee joint. The pathological changes in knee function were not observed. This trial is registered with Australian and New Zealand Clinical Trials RegistryACTRN12613001168741.

Young athletes after ACL reconstruction with quadriceps strength asymmetry at the time of return-to-sport demonstrate decreased knee function 1 year later

2017 ◽  
Vol 26 (2) ◽  
pp. 426-433 ◽  
Author(s):  
Matthew P. Ithurburn ◽  
Alex R. Altenburger ◽  
Staci Thomas ◽  
Timothy E. Hewett ◽  
Mark V. Paterno ◽  
...  
Keyword(s):  
Acl Reconstruction ◽  
Return To Sport ◽  
Quadriceps Strength ◽  
Knee Function ◽  
Young Athletes ◽  
Strength Asymmetry

Current Evidence in Anterior Cruciate Ligament Rehabilitation: Neuromuscular Electrical Stimulation Combined With a Strengthening Program: A Critically Appraised Topic

2017 ◽  
Vol 22 (6) ◽  
pp. 5-11
Author(s):  
Michael E. Lynch ◽  
Christine A. Lauber
Keyword(s):  
Anterior Cruciate Ligament ◽  
Electrical Stimulation ◽  
Acl Reconstruction ◽  
Cruciate Ligament ◽  
Neuromuscular Electrical Stimulation ◽  
Quadriceps Strength ◽  
Sufficient Evidence ◽  
Clinical Question ◽  
Bottom Line ◽  
Anterior Cruciate

Clinical Question:Is it beneficial to add neuromuscular electrical stimulation (NMES) to a strengthening program after anterior cruciate ligament (ACL) reconstruction surgery?Clinical Bottom Line:There is sufficient evidence to support the inclusion of NMES in a rehabilitation strengthening program post ACL reconstruction. All three included studies reported significant quadriceps strength gains (p < .05) in favor of the group that completed both NMES and strengthening exercises compared with a strength-only group. Two studies initiated NMES within 4 days of surgery. One study found significant quadriceps strength increases when NMES was implemented 6 months after surgery.

scholarly journals The knee function of the soccer players after ACLR is comparable with non-injured controls: A case-control study

2021 ◽  
Vol 29 (3) ◽  
pp. 230949902110361
Author(s):  
Marcin E Domzalski ◽  
Filip Pieta ◽  
Katarzyna Przybylak
Keyword(s):  
Acl Reconstruction ◽  
Case Control Study ◽  
Case Control ◽  
Knee Function ◽  
Soccer Players ◽  
Control Group ◽  
Professional Soccer ◽  
Sf 36 ◽  
Control Study

Purpose: Many studies report a high primary success rate of ACL reconstruction (ACLR), with an increased risk of decline in knee performance correlating with the time passed since surgery. Only one study has compared male soccer players after ACLR to a matched control group of uninjured players in terms of their return to sport and performance. The purpose of this cross-sectional case-control study was to determine the knee performance between soccer players after ACLR and control group matched by age, sex, and professional experience. Methods: All the male professional soccer players aged 18–36 years at the time of injury, who sustained an ACL tear while playing league soccer in Poland between January 2008 and December 2011 were contacted and compared with age and experience-matched healthy control group selected from professional football players. KOOS, IKDC-2000, Lysholm and SF-36 scales were used for comparison. Results: The average follow-up was 7.9 years (range 6–9 years). The ACL-injured soccer players scored significantly lower in IKDC and Lysholm scores compared with the reference group but still were classified as normal knee function in both scales. In all five dimensions of the KOOS and subscales of SF-36 no apparent differences were noted. In all scales in the study group, no correlation was observed between the player’s age and follow-up time after ACLR. Conclusion: After ACL reconstruction and successful return to professional sport, knee function is as good as uninjured team members in the midterm follow-up. Level of evidence: III

Effects of quadriceps muscle neuromuscular electrical stimulation in living donor liver transplant recipients: phase-II single-blinded randomized controlled trial

2019 ◽  
Vol 33 (5) ◽  
pp. 875-884 ◽  
Author(s):  
Masatoshi Hanada ◽  
Akihiko Soyama ◽  
Masaaki Hidaka ◽  
Hiroki Nagura ◽  
Masato Oikawa ◽  
...  
Keyword(s):  
Liver Transplantation ◽  
Electrical Stimulation ◽  
Tibialis Anterior ◽  
Controlled Trial ◽  
Neuromuscular Electrical Stimulation ◽  
Muscle Thickness ◽  
Quadriceps Muscle ◽  
Quadriceps Strength ◽  
Walking Distance ◽  
Donor Liver

Objective: To evaluate the efficacy of neuromuscular electrical stimulation on quadriceps muscle strength and thickness in liver transplantation patients. Design: Phase-II, randomized, parallel-group, allocation-concealed, assessor-blinded, single-center controlled trial. Setting: Inpatient rehabilitation sector. Subjects: Patients following living donor liver transplantation. Interventions: The quadriceps muscle stimulation and the control groups received bilateral muscle electrical stimulation on the quadriceps and tibialis anterior muscles, respectively. Neuromuscular electrical stimulation sessions in both groups were conducted for 30 minutes per session, once per day for five weekdays over four weeks by a physical therapist. Main measures: Quadriceps muscle strength and quadriceps muscle thickness. Results: Neuromuscular electrical stimulation was applied to the quadriceps muscles group ( n = 23) or the tibialis anterior muscle in the control group ( n = 22). The decrease in quadriceps muscle thickness differed significantly between both groups on postoperative day 30 (median −3 vs −8, P < 0.01). The changes in predicted quadriceps strength and 6 minutes walking distance were not significantly different between groups (quadriceps strength median −12% vs −5%, P = 0.40; 6 minutes walking distance median −18 vs −21 m, P = 0.74). Conclusion: Neuromuscular electrical stimulation of the quadriceps muscle for liver transplantation recipients was able to maintain the quadriceps muscle thickness after surgery. Future larger scale studies are needed to consider the effectiveness of neuromuscular electrical stimulation and how to incorporate this intervention in the overall strategy of the physical therapy program.

scholarly journals The Effectiveness Of Quadriceps Strengthening Exercises Combined With Neuromuscular Electrical Stimulation on Patellofemoral Pain Syndrome

2017 ◽  
Vol 5 (2_suppl2) ◽  
pp. 2325967117S0010
Author(s):  
Sezen Karabörklü Argut ◽  
Nilgün Türker ◽  
Derya Çelik ◽  
Önder İsmet Kılıçoğlu
Keyword(s):  
Electrical Stimulation ◽  
Muscle Strength ◽  
Neuromuscular Electrical Stimulation ◽  
Pain Syndrome ◽  
Quadriceps Strength ◽  
Patellofemoral Pain ◽  
Group I ◽  
Strengthening Exercises ◽  
Group Ii ◽  
And Function

Objective: The weakness of the quadriceps strength in patellofemoral pain syndrome (PFPS) is very evident. Therefore, quadriceps strengthening exercises are very important part of the rehabilitation program. Neuromuscular Electrical Stimulation (NMES) is considered one of the methods for increasing quadriceps muscle strength. To evaluate the effectiveness of combined NMES and strengthening exercises to improve the recovery of quadriceps strength and function in patients with PFPS. Methods: This study was planned as a randomized controlled pilot study. A total of 27 patients (mean age=38.9±10.8 years, range=20-60 years; 16 females) with PFPS were assessed and randomly assigned into 2 groups. Group I received a standard program (quadriceps strengthening, hip strengthening and hamstring stretching) and NMES combined with quadriceps strengthening exercises simultaneously. Group II received the same standard program without NMES. Both groups were enrolled 3 times per week for 40 minutes per day in 6 weeks. Patients were assessed at the baseline, 3 rd, 6th, and 12th weeks of treatment. Quadriceps strength was evaluated by isokinetic dynamometer. The range of motion at testing was set between 0 for extension to 90 for flexion. The test was performed at 60 degrees/sn and concentric maximum peak torque value was recorded. Kujala and Lysholm scores were used for functional assessments. The data were analyzed using the SPSS 20.0. Shapiro-Wilk test was used to assess the distribution of data. The changes in dependent variables before treatment, 3 rd, 6th, and 12th weeks were analyzed using a 2 by 4 mixed-model analysis of variance (ANOVA). Pairwise comparisons with paired t test were used to determine whether the Group I or Group II, has changed over time. An intention- to- treat analysis was performed to impute values for missing data. An alpha level of 0.05 was established. Results: The study was completed with 20 patients. Group I (n=10; mean age=39.4±8.5 years; 7 females) and group II (n=10; mean age=43.2±11.7 years; 5 females) had no differences in pre-operative measures (p>.05). There was significant improvements in within groups statistics of all parameters for both groups (p<.05). No differences in quadriceps strength, Kujala and Lysholm scores between groups were found at the different time points (F= 0.86; p = 0.12, F=0,001; p =0.97, F=0.12; p=0.73, respectively) Conclusion: NMES combined with quadriceps strengthening exercises has no additional effect on PFPS patients’ on muscle strength and function. When considering these results, we believe that there is no need to continue the study in progress. [Table: see text]

scholarly journals Effects of Neuromuscular Electrical Stimulation Combined with Exercises versus an Exercise Program on the Physical Characteristics and Functions of the Elderly: A Randomized Controlled Trial

2021 ◽  
Vol 18 (5) ◽  
pp. 2463
Author(s):  
Eun Mi Jang ◽  
So Hyun Park
Keyword(s):  
Electrical Stimulation ◽  
Muscle Mass ◽  
Lower Limb ◽  
Neuromuscular Electrical Stimulation ◽  
Exercise Program ◽  
The Elderly ◽  
Exercise Group ◽  
Low Intensity ◽  
Strengthening Exercise ◽  
Low Intensity Exercise

(1) Background—The application of neuromuscular electrical stimulation (NMES) combined with low-intensity exercise to the elderly can be more efficient than low-intensity exercise only in terms of delaying the loss of muscle mass. We aimed to assess the adjunct of NMES to low-intensity lower limb strengthening exercise to prevent falls in frail elderly for a relatively short period of 4 weeks. (2) Methods—Thirty elderly women aged 65 or above were randomly categorized into three groups: control group (CON, n = 8), exercise group (EX, n = 10), and NMES with exercise group (EX + NMES, n = 9). The exercise group took part in a lower limb strengthening exercise program for one hour three times a week for four weeks. Furthermore, the NMES with exercise group had added NMES stimulation when exercising. The limbs’ muscle mass, body fat mass, calf circumference, grip force, five times sit-to-stand test, timed up-and-go test (TUG), one-leg stand test, and Y-balance test (YBT) were evaluated at baseline and 4 weeks after. (3) Results—Comparisons between the three groups showed that the TUG was significantly decreased and the YB was significantly increased in NMES with exercise group (p < 0.05). (4) Conclusions—These results suggested that a combination of NMES stimulation and exercises was more helpful in strengthening balance than exercises alone in the short term.

scholarly journals Quadriceps Strength Symmetry Does Not Modify Gait Mechanics After Anterior Cruciate Ligament Reconstruction, Rehabilitation, and Return-to-Sport Training

2020 ◽  
pp. 036354652098007
Author(s):  
Elanna K. Arhos ◽  
Jacob J. Capin ◽  
Thomas S. Buchanan ◽  
Lynn Snyder-Mackler
Keyword(s):  
Knee Flexion ◽  
Cruciate Ligament ◽  
Return To Sport ◽  
Quadriceps Muscle ◽  
Quadriceps Strength ◽  
Flexion Angle ◽  
Knee Flexion Angle ◽  
Sport Training ◽  
Gait Biomechanics ◽  
Peak Knee

Background: After anterior cruciate ligament (ACL) reconstruction (ACLR), biomechanical asymmetries during gait are highly prevalent, persistent, and linked to posttraumatic knee osteoarthritis. Quadriceps strength is an important clinical measure associated with preoperative gait asymmetries and postoperative function and is a primary criterion for return-to-sport clearance. Evidence relating symmetry in quadriceps strength with gait biomechanics is limited to preoperative and early rehabilitation time points before return-to-sport training. Purpose/Hypothesis: The purpose was to determine the relationship between symmetry in isometric quadriceps strength and gait biomechanics after return-to-sport training in athletes after ACLR. We hypothesized that as quadriceps strength symmetry increases, athletes will demonstrate more symmetric knee joint biomechanics, including tibiofemoral joint loading during gait. Study Design: Cross-sectional study; Level of evidence, 3. Methods: Of 79 athletes enrolled in the ACL-SPORTS Trial, 76 were participants in this study after completing postoperative rehabilitation and 10 return-to-sport training sessions (mean ± SD, 7.1 ± 2.0 months after ACLR). All participants completed biomechanical walking gait analysis and isometric quadriceps strength assessment using an electromechanical dynamometer. Quadriceps strength was calculated using a limb symmetry index (involved limb value / uninvolved limb value × 100). The biomechanical variables of interest included peak knee flexion angle, peak knee internal extension moment, sagittal plane knee excursion at weight acceptance and midstance, quadriceps muscle force at peak knee flexion angle, and peak medial compartment contact force. Spearman rank correlation (ρ) coefficients were used to determine the relationship between limb symmetry indexes in quadriceps strength and each biomechanical variable; alpha was set to .05. Results: Of the 76 participants, 27 (35%) demonstrated asymmetries in quadriceps strength, defined by quadriceps strength symmetry <90% (n = 23) or >110% (n = 4) (range, 56.9%-131.7%). For the biomechanical variables of interest, 67% demonstrated asymmetry in peak knee flexion angle; 68% and 83% in knee excursion during weight acceptance and midstance, respectively; 74% in internal peak knee extension moment; 57% in medial compartment contact force; and 74% in quadriceps muscle force. There were no significant correlations between quadriceps strength index and limb symmetry indexes for any biomechanical variable after return-to-sport training ( P > .129). Conclusion: Among those who completed return-to-sport training after ACLR, subsequent quadriceps strength symmetry was not correlated with the persistent asymmetries in gait biomechanics. After a threshold of quadriceps strength is reached, restoring strength alone may not ameliorate gait asymmetries, and current clinical interventions and return-to-sport training may not adequately target gait.

scholarly journals THE EFFECT OF AGE AND CONCOMITANT SURGERY ON STRENGTH IN ADOLESCENT ATHLETES WITH PRIMARY QUADRICEPS TENDON ACL RECONSTRUCTION

2020 ◽  
Vol 8 (4_suppl3) ◽  
pp. 2325967120S0020
Author(s):  
Sarah E. Reinking ◽  
Kaitlyn A. Flynn ◽  
Alexia G. Gagliardi ◽  
Cassidy J. Hallagin ◽  
Melissa N. Randall ◽  
...  
Keyword(s):  
Acl Reconstruction ◽  
Return To Sport ◽  
Quadriceps Tendon ◽  
Peak Torque ◽  
Quadriceps Strength ◽  
Steady Increase ◽  
Isokinetic Testing ◽  
Concomitant Surgery ◽  
Effect Of Age ◽  
Meniscus Surgery

Background: Knee extensor strength deficits occur after ACL reconstruction (ACLR). Prior studies have reported that age affects quadriceps strength after ACLR, however strength deficits in relation to age have not been assessed among adolescents. Isokinetic dynamometric strength testing is a tool frequently used to assess strength post-operatively in order to identify these deficits. Purposes: 1) To examine the effect of age on isokinetic extensor and flexor deficits among adolescents who were 5-10 months post-ACLR. We hypothesized that age would be inversely related to extensor strength deficit. 2) To determine if extensor or flexor strength deficits exist between adolescents post-ACLR with and without concomitant meniscus surgery. We hypothesized that those with concomitant meniscus surgery would demonstrate greater deficits in flexor and extensor strength. Methods: Study participants completed isokinetic testing within 5-10 months after primary quadriceps tendon ACLR, but before return to sport. The protocol consisted of assessing peak torque at 60, 180, and 300 degrees/s, through a limited range of knee extension and flexion. Our primary outcome variables were peak torque percent deficit of involved leg compared to uninvolved leg for flexion and extension. To address purpose 1, we constructed a series of multivariable regression models, where age was the independent variable, peak torque flexor/extensor deficits at each testing speed was the dependent variable, and sex and weight were covariates. To address purpose 2, we compared peak torque extensor and flexor deficits between those with and without concomitant meniscus surgery using independent samples t-tests. Results: A total of 44 completed the study protocol. There were no significant demographic differences between those with and without concomitant meniscus surgery (Table 1). The relationship between age at surgery and peak torque extensor deficits at 300d/s demonstrated a linear but non-significant association (Table 2; Figure 1). For every year increase in age, the expected deficit at 300d/s increased by approximately 3%. Patients who underwent isolated ACLR demonstrated significantly greater flexor deficits than those who underwent ACLR with concomitant meniscus surgery when tested at 180d/s and 300d/s (Table 3). Conclusion: Contrary to our first hypothesis, extensor deficits at 300d/s demonstrated an apparent association with older age. We observed a steady increase in strength deficit at 300d/s associated with increasing age. Contrary to our second hypothesis, no significant differences were found in extensor strength between those with and without meniscus surgery. Additionally, those with concomitant meniscus surgery demonstrated significantly less flexor deficit than those without meniscus surgery. [Table: see text][Table: see text][Figure: see text][Table: see text]

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