The Authors Comment: Conference on “The Influence of Lower-Extremity Muscle Force on Gait Characteristics…”

Abstract Background and Purpose.Measures of postural control may be useful for determining fall risk in older people and for determining the outcomes of treatments aimed at improving balance. Commonly used tools measure the output of the postural control system. The purpose of this study was to determine the degree to which one component of postural control (muscle force) contributes to scores on 3 functional balance measures. Subjects. Fifty community-dwelling volunteers between 65 and 91 years of age (X̄=74.82, SD=6.11) participated. Based on their histories, 11 subjects were classified as being at risk for falling. Methods. Measures were the Berg Balance Scale (BBS), the Functional Reach Test (FRT), and the Timed Get Up & Go Test (GUG). The force generated by 12 lower-extremity muscle groups was measured using a handheld dynamometer. Results. In the group reporting no falls, dorsiflexor and subtalar evertor force accounted for 58% of the score on the BBS, ankle plantar-flexor and subtalar invertor force accounted for 48.4% of the score on the GUG, and ankle plantar-flexor force accounted for 13% of the score on the FRT. Ankle dorsiflexor and hip extensor forces were lower in subjects reporting falls, and force of the ankle dorsiflexors predicted fall status. Conclusion and Discussion. Distal muscle force measures may be able to contribute to the prediction of functional balance scores; however, the muscles involved in the prediction differ depending on the measure of balance.

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Influence of Lower-extremity Muscle Force, Muscle Mass and Asymmetry in Knee Extension Force on Gait Ability in Community-dwelling Elderly Women

Journal of Physical Therapy Science ◽

10.1589/jpts.18.73 ◽

2006 ◽

Vol 18 (1) ◽

pp. 73-79 ◽

Cited By ~ 13

Author(s):

Hayato Nakao ◽

Takahiro Yoshikawa ◽

Tatsuya Mimura ◽

Taketaka Hara ◽

Katsuo Nishimoto ◽

...

Keyword(s):

Lower Extremity ◽

Muscle Mass ◽

Muscle Force ◽

Elderly Women ◽

Knee Extension ◽

Community Dwelling ◽

Lower Extremity Muscle ◽

Extension Force

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Clinical Rehabilitation Effect of Postoperative Lower-Limb Training on the Patients Undergoing OLIF Surgery: A Retrospective Study

Pain Research and Management ◽

10.1155/2020/1065202 ◽

2020 ◽

Vol 2020 ◽

pp. 1-6

Author(s):

Haoming Wang ◽

Yachong Huo ◽

Yachao Zhao ◽

Botong Zhang ◽

Dalong Yang ◽

...

Keyword(s):

Lower Extremity ◽

Lower Limb ◽

Muscle Force ◽

Statistical Significance ◽

Intervention Group ◽

Control Group ◽

Postoperative Rehabilitation ◽

Lower Extremity Muscle ◽

Rehabilitation Exercise

Background. In this study, it was aimed to investigate the clinical rehabilitation effect of lower-limb training on the patients that undergo oblique lumbar interbody fusion (OLIF) procedures. Methods. The eligible participants undergoing OLIF procedures between 01/2017 and 07/2019 were identified. All the patients underwent one-segment fusion operation (L3-4 or L4-5). Based on whether the participants received postoperative rehabilitation training, they were divided into two groups: intervention group and control group. Postoperatively, the participants in the intervention group were trained with lower-extremity rehabilitation exercise and maintained for three months. All participants got reexamined at the first postoperative week, the second postoperative week, the first postoperative month, and the third postoperative month (last follow-up). Comparisons were made in terms of the lower-extremity muscle force, visual analogue scale (VAS) score, lumbar JOA score, Oswestry disability index (ODI), the incidence of deep venous thrombosis (DVT), and patient satisfaction. Results. Seventy-seven participants in the intervention group (32 males and 45 females) and 82 in the control group (39 males and 43 females) were incorporated in this study. The median age of the participants was 57 years (39∼73) in the intervention group and 54 years (35∼71) in the control group. No statistical significance between the two groups was found (P>0.05). ODI score was less in the intervention group as compared to the control group in the first week after surgery (P=0.029). VAS and JOA scores were better in the intervention group in the first two weeks after surgery (P<0.05). DVT incidence in the intervention group was lower than the control group at final follow-up (P=0.037). Both group participants have achieved good grading in muscle force rehabilitation but no significant differences between the two groups. Additionally, satisfaction was higher in the intervention group than the control group. Conclusions. In summary, postoperative lower-extremity rehabilitation exercise can effectively accelerate patients’ health recovery from the OLIF surgery and increase their satisfaction.

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Faculty Opinions recommendation of Effect of Sexual Intercourse on Lower Extremity Muscle Force in Strength-Trained Men.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.733230892.793545907 ◽

2018 ◽

Author(s):

R Taylor Segraves

Keyword(s):

Lower Extremity ◽

Sexual Intercourse ◽

Muscle Force ◽

Lower Extremity Muscle

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Predictive Neuromuscular Fatigue of the Lower Extremity Utilizing Computer Modeling

Journal of Biomechanical Engineering ◽

10.1115/1.4032071 ◽

2015 ◽

Vol 138 (1) ◽

Cited By ~ 3

Author(s):

Michael A. Samaan ◽

Joshua T. Weinhandl ◽

Steven A. Hans ◽

Sebastian Y. Bawab ◽

Stacie I. Ringleb

Keyword(s):

Lower Extremity ◽

Muscle Force ◽

Cruciate Ligament ◽

Force Production ◽

Neuromuscular Fatigue ◽

Lower Extremity Injury ◽

Muscle Forces ◽

Flexor Muscle ◽

Lower Extremity Muscle ◽

Muscle Force Production

This paper studies the modeling of lower extremity muscle forces and their correlation to neuromuscular fatigue. Two analytical fatigue models were combined with a musculoskeletal model to estimate the effects of hamstrings fatigue on lower extremity muscle forces during a side step cut. One of the fatigue models (Tang) used subject-specific knee flexor muscle fatigue and recovery data while the second model (Xia) used previously established fatigue and recovery parameters. Both fatigue models were able to predict hamstrings fatigue within 20% of the experimental data, with the semimembranosus and semitendinosus muscles demonstrating the largest (11%) and smallest (1%) differences, respectively. In addition, various hamstrings fatigue levels (10–90%) on lower extremity muscle force production were assessed using one of the analytical fatigue models. As hamstrings fatigue levels increased, the quadriceps muscle forces decreased by 21% (p < 0.01), while gastrocnemius muscle forces increased by 36% (p < 0.01). The results of this study validate the use of two analytical fatigue models in determining the effects of neuromuscular fatigue during a side step cut, and therefore, this model can be used to assess fatigue effects on risk of lower extremity injury during athletic maneuvers. Understanding the effects of fatigue on muscle force production may provide insight on muscle group compensations that may lead to altered lower extremity motion patterns as seen in noncontact anterior cruciate ligament (ACL) injuries.

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The effects of wearing high heeled shoes on the muscles and joints of lower limb

Biomedical Human Kinetics ◽

10.2478/bhk-2021-0011 ◽

2021 ◽

Vol 13 (1) ◽

pp. 81-96

Author(s):

Sema Polat ◽

Ayşe Gül Kabakcı

Keyword(s):

Lower Extremity ◽

Range Of Motion ◽

Tibialis Anterior ◽

Muscle Force ◽

Plantar Flexion ◽

Tibialis Anterior Muscle ◽

Metatarsophalangeal Joint ◽

Heel Height ◽

Lower Extremity Muscle ◽

Significant Difference

Abstract Study aim: The aim of this study is to investigate whether the lower extremity muscles’ force/torque/strength and range of motion may be affected in females wearing high heeled shoes and not wearing high heeled shoes. Material and methods: The study was carried out with 136 females aged between 18 and 45 years. The first group consisted of 66 females wearing 5 cm or higher high heeled shoes. The second group consisted of 70 females wearing shoes having heel height less than 5 cm. The Nicholas Manual Muscle Tester was used to evaluate lower extremity muscle force/torque/strength, while range of motion was assessed with an electronic goniometer. The SPSS 21.0 program was used for statistical analysis. Results: A significant difference was found in the lower extremity muscles’ force (except for hip adduction, dorsiflexion, metatarsophalangeal joint and interphalangeal joint extension), and muscles’ torque (except for hip adduction, dorsiflexion and left tibialis anterior muscle) and muscles’ strength values (except for hip adduction, dorsiflexion and tibialis anterior muscle). Also, as heel height increased, the range of motion of hip joint flexion, internal rotation and plantar flexion increased significantly. Conclusions: Excessive use of high heeled shoes can cause changes in muscle force/torque/strength and joint range of motion.

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