Gender differences in ground reaction force following perturbations in subjects with low back pain

2009 ◽  
Vol 29 (2) ◽  
pp. 290-295 ◽  
Author(s):  
Paul S. Sung ◽  
Hyung-Soon Park
Keyword(s):  
Gender Differences ◽  
Low Back Pain ◽  
Back Pain ◽  
Ground Reaction Force ◽  
Reaction Force ◽  
Low Back

Gait ground reaction force characteristics of low back pain patients with pronated foot and able-bodied individuals with and without foot pronation

2016 ◽  
Vol 49 (9) ◽  
pp. 1705-1710 ◽  
Author(s):  
Nader Farahpour ◽  
AmirAli Jafarnezhad ◽  
Mohsen Damavandi ◽  
Abbas Bakhtiari ◽  
Paul Allard
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Ground Reaction Force ◽  
Reaction Force ◽  
Low Back ◽  
Foot Pronation ◽  
Pain Patients ◽  
Force Characteristics

Effect of Lower Limb Muscle Fatigue on Ground Reaction Force Components During Landing in People With Nonspecific Chronic Low Back Pain

2019 ◽  
Vol 28 (8) ◽  
pp. 847-853
Author(s):  
Ali Jalalvand ◽  
Mehrdad Anbarian
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Muscle Fatigue ◽  
Ground Reaction Force ◽  
Lower Limb ◽  
Healthy Subjects ◽  
Reaction Force ◽  
Low Back ◽  
Force Development ◽  
Force Components

Context: The link between landing parameters and lower limb muscle fatigue in association with chronic low back pain (CLBP) is not well understood. Objective: To examine the effects of fatigue on the ground reaction force components during landing in people with nonspecific CLBP. Design: Quasi-experimental study. Setting: Clinical biomechanics laboratory. Participants: A total of 44 subjects were equally divided into a healthy group and a group with CLBP. Main Outcome Measures: The ground reaction force along anterior–posterior (y) and medial–lateral (x) and vertical (z) axes, time to peak (TTP), the rate of force development, and impulses for all axes were calculated. A repeated-measures analysis of variance (group × fatigue) was used to compare the data among groups. Results: In the unfatigued conditions, the amplitudes of Fy3, Fz2, and TTP of Fy1, Fy2, Fz1, Fz2, Fz3, Fz4, rate of force development in Y in the CLBP subjects are significantly different than those in the healthy subjects (P < .05). In the fatigued conditions, the amplitudes of Fz2, Fz3, Fz4, and TTP of Fy2, Fy3, Fy4, Fz2, impulses of X2, Z in the CLBP group were significantly different than those in the healthy subjects (P < .05). Within-group comparisons of measured Fx1, Fy1, Fy2, Fz2, Fz4 and TTP of Fx1, Fy1, Fy2, Fz2, Fz3, Fz4, impulses of X2, z were significantly different from prefatigue to postfatigue in the healthy group (P < .05). Within-group comparisons of measured Fx1, Fy1, Fz1, Fz2 and TTP of Fx5, Fz1, impulses of X2 were significantly differed from prefatigue to postfatigue in the CLBP group (P < .05). Conclusions: It seems that TTP of ground reaction force variables in CLBP may have clinical values for rehabilitation. Muscle fatigue altered landing performance. However, patients with CLBP will respond differently to lower-extremity fatigue. These altered variables in patients with low back pain are the cause of future injuries or lower-extremity injuries that need to be addressed in further studies.

scholarly journals Lower Extremity Fatigue, Sex, and Landing Performance in a Population With Recurrent Low Back Pain

2015 ◽  
Vol 50 (4) ◽  
pp. 378-384 ◽  
Author(s):  
Ram Haddas ◽  
C. Roger James ◽  
Troy L. Hooper
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Lower Extremity ◽  
Ground Reaction Force ◽  
Knee Flexion ◽  
Reaction Force ◽  
Initial Contact ◽  
Low Back ◽  
Lower Extremity Injuries ◽  
Extremity Injuries

Context Low back pain and lower extremity injuries affect athletes of all ages. Previous authors have linked a history of low back pain with lower extremity injuries. Fatigue is a risk factor for lower extremity injuries, some of which are known to affect female athletes more often than their male counterparts. Objective To determine the effects of lower extremity fatigue and sex on knee mechanics, neuromuscular control, and ground reaction force during landing in people with recurrent low back pain (LBP). Design Cross-sectional study. Setting A clinical biomechanics laboratory. Patients or Other Participants Thirty-three young adults with recurrent LBP but without current symptoms. Intervention(s) Fatigue was induced using a submaximal free-weight squat protocol with 15% body weight until task failure was achieved. Main Outcome Measure(s) Three-dimensional knee motion, knee and ankle moments, ground reaction force, and trunk and lower extremity muscle-activity measurements were collected during 0.30-m drop vertical-jump landings. Results Fatigue altered landing mechanics, with differences in landing performance between sexes. Women tended to have greater knee-flexion angle at initial contact, greater maximum knee internal-rotation angle, greater maximum knee-flexion moment, smaller knee-adduction moment, smaller ankle-inversion moment, smaller ground reaction force impact, and earlier multifidus activation. In men and women, fatigue produced a smaller knee-abduction angle at initial contact, greater maximum knee-flexion moment, and delays in semitendinosus, multifidus, gluteus maximus, and rectus femoris activation. Conclusions Our results provide evidence that during a fatigued 0.30-m landing sequence, women who suffered from recurrent LBP landed differently than did men with recurrent LBP, which may increase women's exposure to biomechanical factors that can contribute to lower extremity injury.

scholarly journals The Effects of Muscle Energy on Low Back Pain: A 3D Analysis of running biomechanics

2021 ◽  
Vol 9 (1) ◽  
pp. 51
Author(s):  
Alisa Drapeaux ◽  
Jon Hurdelbrink
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Reaction Force ◽  
Low Back ◽  
Ground Contact ◽  
Peak Acceleration ◽  
Clinical Exam ◽  
Ground Contact Time ◽  
Muscle Energy ◽  
Initial Peak

Background: Muscle energy technique (MET) is asn osteopathic treatment technique that is utilized frequently in the clinical setting, yet the overall effectiveness is minimally supported within literature. MET is an osteopathic technique that involves an isometric contract relax technique intended to improve alignment and enhance neuromuscular education. Objective: The purpose of this study was to determine the effectiveness of MET on running kinetics on subjects with low back pain. Method: A quasi-experimental research design was implemented and subjects, all of whom either had a history of or currently experience low back pain, underwent pre-intervention data collection of: anthropometric measurements, medical history, dorsaVi 3D running analysis, and a musculoskeletal and neurological clinical exam. Subjects underwent 6 weeks of isolated lumbo-pelvic MET at a frequency of twice a week, and were instructed to avoid all other treatment. Post-intervention data collected included a clinical exam and another dorsaVI running analysis. Results: Data was analyzed including: pre and post-treatment initial peak acceleration, ground contact time, and ground reaction force. A paired t-test comparing pre and post mean kinetic changes demonstrated the following p values: initial peak acceleration p = .80, ground contact time p = .96, and ground reaction force p = .68. Conclusion: This study demonstrated that isolated MET treatment is not statistically significant for changing 3D kinetic running variable in subjects with low back pain. Clinical Implications: Recommend healthcare providers to use a multi-treatment approach for low back pain. Future research should include a control group and larger sample size.

scholarly journals Biomechanics of Lower Limbs during Walking among Candidates for Total Knee Arthroplasty with and without Low Back Pain

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
David R. Burnett ◽  
Naira H. Campbell-Kyureghyan ◽  
Robert V. Topp ◽  
Peter M. Quesada
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Reaction Force ◽  
Lower Limbs ◽  
Low Back ◽  
Vertical Ground Reaction Force ◽  
Gait Patterns ◽  
Gait Symmetry ◽  
Group I ◽  
Group Ii

The effect of joint pathologies, such as unilateral knee osteoarthritis (UKOA) or low back pain (LBP), on bilateral gait symmetry has gained increased attention during the past decade. This study is the first to compare gait patterns between patients with UKOA and LBP in combination and with UKOA only. Temporal, kinematic, and kinetic variables were measured bilaterally during gait stance phase in 31 subjects with UKOA and LBP (Group I) and 11 subjects with only UKOA (Group II). Group I patients exhibited less hip rotation in the affected limb (A) than in the nonaffected (NA) limb during walking in contrast to Group II patients. Group I patients had minimal bilateral differences in hip abduction and flexion, but Group II patients displayed significantly larger values in the NA limb compared to the A limb for both parameters. Hip flexion patterns were significantly different between Groups I and II. Subjects in both groups adapted gait patterns that minimized vertical ground reaction force, knee flexion motion, and stance time on the UKOA affected limb. The distinct kinematic gait patterns that were revealed in this study may provide clinical value for assessment of patients with UKOA in conjunction with LBP.

scholarly journals The effect of eight-week elastic walking exercise on the pattern of plantar pressure distribution in women with chronic low back pain during walking

2021 ◽  
Vol 42 (6) ◽  
pp. 713-721
Author(s):  
Farnaz Seify ◽  
Elahe Mamashli ◽  
AmirAli Jafarnejadgero ◽  
Mahrokh Dehghani ◽  
Mohsen Katanchi ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Distribution Pattern ◽  
Plantar Pressure ◽  
Reaction Force ◽  
Ground Reaction Forces ◽  
Low Back ◽  
Main Effect ◽  
Reaction Forces ◽  
Experimental Group

Background: Training of elastic walking is a new method for elasticity in gait and correction of the distribution pattern of plantar pressure in patients with low back pain during gait. This study aimed to investigate the distribution pattern of plantar pressure during gait in women with low back pain following 8 weeks-training of elastic walking. Methods: The present study was quasi-experimental. In this research, 20 women with low back pain were divided into control (n=11) and experimental (n=9) groups. Subjects from the experimental group performed elastic gait training for 3 sessions per week for 8 weeks while the control group didn’t have any exercise program. The plantar pressure variables included the peak of vertical ground reaction forces, the time to peak of ground reaction forces, loading rate, the peak of plantar pressure on the ten foot regions, the peak of ground reaction forces on the ten foot regions, and displacement of the pressure center in two internal-external (copx) and anterior-posterior (copy) lines. The distribution pattern of plantar pressure during gait was recorded by a foot scan system (Sampling rate 300 Hz) in pre-training and post-training. Two-way ANOVA was used to analyze the data. The significance level was set at P < 0.05. Results: In the experimental group, the results of this study demonstrated lower peak vertical reaction force (FzMS component) during post-test compared with pre-test (P = 0.002). Moreover, findings showed that the main effect of group on peak pressure in the mid-foot region was significant (P = 0.011). The results showed no significant difference concerning the main effect of group, the main effect of time and effect, interaction time and group on peak vertical reaction force, displacement of pressure center, vertical loading rate, and walking stance time (P > 0.05). Conclusion: The findings of this study showed that training of elastic walking does not have a significant effect on stance time. Also, training of elastic walking in the experimental group reduced the peak vertical ground reaction force (FzMS component) during the post-test compared with the pre-test that can correct the walking pattern and improve the chronic low back pain.

Gender differences in postural control in people with nonspecific chronic low back pain

2018 ◽  
Vol 64 ◽  
pp. 147-151 ◽  
Author(s):  
Buse Ozcan Kahraman ◽  
Turhan Kahraman ◽  
Orhan Kalemci ◽  
Yesim Salik Sengul
Keyword(s):  
Gender Differences ◽  
Low Back Pain ◽  
Back Pain ◽  
Postural Control ◽  
Chronic Low Back Pain ◽  
Low Back

Laboratory Gait Analysis in Patients with Low Back Pain before and after a Pilates Intervention

2009 ◽  
Vol 18 (2) ◽  
pp. 269-282 ◽  
Author(s):  
Juliana Limba da Fonseca ◽  
Marcio Magini ◽  
Thais Helena de Freitas
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Outcome Measures ◽  
Lower Limb ◽  
Controlled Trial ◽  
Reaction Force ◽  
Control Group ◽  
Low Back ◽  
Before And After ◽  
Pilates Method

Objective:To evaluate the influence of pain on vertical ground-reaction force (VGRF) in patients with low back problems and the effect of the Pilates method on the gait of these patients.Design:A single-blind randomized controlled trial.Participants:28 individuals assigned to a control group (n = 11) and a low-back group (n = 17), the latter of which was subdivided into a Pilates group (n = 8) and a no-Pilates group (n = 9).Intervention:The Pilates group undertook 15 sessions of Pilates.Main Outcome Measures:The VGRF parameters were recorded during preferred and faster walking speeds. The data were collected before and after the intervention.Results:The weight-acceptance rate and push-off rate were significantly less in the right lower limb of low-back group than of the control group at preferred speed. Improvements were seen in the Pilates group postintervention, with increased middle-support force for the left lower limb at faster walking speed and decreased pain; this did not occur in the no-Pilates group.Conclusions:These results suggest that patients with low back pain use strategies to attenuate the amount of force imposed on their body. The Pilates method can improve weight discharge in gait and reduce pain compared with no intervention.

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