bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rate of Force Development as an Adjunctive Outcome Measure for Return-to-Sport Decisions After Anterior Cruciate Ligament Reconstruction
Authors: Angelozzi Massimo , Madama Marco , Corsica Cristiana , Calvisi Vittorio , Properzi Gianfranco , McCaw Steven T. , Cacchio Angelo 
Published: October 2012

Study Design Descriptive, prospective, longitudinal single-cohort study. Objective To investigate the rate of force development to 30% (RFD30), 50% (RFD50), and 90% (RFD90) of maximal voluntary isometric contraction (MVIC) as an adjunct outcome measure for determining readiness for return to sport following an anterior cruciate ligament (ACL) reconstruction. Background One criterion of full recovery following an ACL reconstruction is the ability to achieve 85% or 90% of the maximal strength of the contralateral limb. However, the time required to develop muscular strength in many types of daily and sports activities is considerably shorter than that required to achieve maximal strength. Therefore, in addition to maximal strength, neuromuscular functions such as RFD should also be considered in the definition of recovery. Methods Forty-five male professional soccer players who underwent an ACL reconstruction were recruited. Assessment with the International Knee Documentation Committee (IKDC) Subjective Knee Evaluation Form, Tegner score, and KT1000 instrumented arthrometer was performed postinjury/prereconstruction and at 6 and 12 months after ACL reconstruction. MVIC, RFD30, RFD50, and RFD90 testing was performed preinjury, as part of standard preseason assessment, and at 6 and 12 months post-ACL reconstruction. Results The average MVIC value 6 months postreconstruction was 97% of the preinjury average value. In contrast, at 6 months, the RFD30, RFD50, and RFD90 values were 80% (P = .04), 77% (P = .03), and 63% (P = .007), respectively, of the preinjury values. The mean RFD values for the reconstructed knee attained or exceeded 90% of the preinjury mean values only at the 12-month post-ACL reconstruction assessment (RFD30, P = .86; RFD50, P = .51; RFD90, P = .56). Conclusion Despite the near recovery of MVIC strength to preinjury levels, there were still significant deficits in RFD at 6 months post-ACL reconstruction. An RFD similar to the preinjury RFD was achieved at 12 months post-ACL reconstruction, following a rehabilitation program focusing on muscle power. These results suggest that, following an ACL reconstruction, RFD criteria may be a useful adjunct outcome measure for the decision to return athletes to sports. J Orthop Sports Phys Ther 2012;42(9):772–780, Epub 19 July 2012. doi:10.2519/jospt.2012.3780
The Effects of Group Cycling on Gait and Pain-Related Disability in Individuals With Mild-to-Moderate Knee Osteoarthritis: A Randomized Controlled Trial
Authors: Salacinski Amanda J. , Krohn Kelly , Lewis Scott F. , Holland Megan L. , Ireland Kathryn , Marchetti Gregory 
Published: October 2012

Study Design Randomized controlled trial. Objective To determine the effectiveness of a community-based program of stationary group cycling on gait, pain, and physical function in individuals with mild-to-moderate knee osteoarthritis (OA). Background Knee pain and disability are common symptoms in individuals with knee OA. Though exercise for knee OA has acknowledged benefits, it has the potential to aggravate symptoms in some instances. Methods Thirty-seven subjects (27 women, 10 men) with a mean ± SD age of 57.7 ± 9.8 years were randomly assigned to a cycling (n = 19) or control (n = 18) group for a 12-week intervention study. Outcome variables, measured at baseline and 12 weeks, included preferred and maximal gait velocity, a visual analog pain scale at rest and following a 6-minute walk test, muscle strength, and functional-outcome questionnaires. Data were analyzed using mixed-model analyses of variance for group and time differences. Results After 12 weeks, the individuals receiving the cycling intervention showed significantly greater improvements (P<.05) for preferred gait velocity (mean difference between groups, 8.7 cm/s; 95% confidence interval [CI]: 2.2, 15.1), visual analog pain scale on the 6-minute walk test (mean difference, 16.5 mm; 95% CI: 2.1, 31.0), the Western Ontario and McMaster Universities Osteoarthritis Index pain subscale (mean difference, 14.9 points; 95% CI: 2.6, 27.0) and stiffness subscale (mean difference, 10.8 points; 95% CI: 0.7, 21.3), the Knee injury and Osteoarthritis Outcome Score pain subscale (mean difference, 13.3 points; 95% CI: 3.4, 23.3), and the Knee Outcome Survey activities of daily living subscale (mean difference, 13.9 points; 95% CI: 2.0, 25.9) compared to controls. Conclusion Stationary group cycling may be an effective exercise option for individuals with mild-to-moderate knee OA and may reduce pain with walking. US trial registration NCT00917618. Level of Evidence Therapy, level 1b-. J Orthop Sports Phys Ther 2012;42(12):985–995. Epub 2 August 2012, doi:10.2519/jospt.2012.3813
Therapeutic Effects of Short-Term Monochromatic Infrared Energy Therapy on Patients With Knee Osteoarthritis: A Double-Blind, Randomized, Placebo-Controlled Study
Authors: Hsieh Ru-Lan , Lo Min-Tzu , Lee Wen-Chung , Liao Wei-Cheng 
Published: October 2012

Study Design Randomized, double-blind, placebo-controlled study. Objectives To examine the short-term therapeutic effects of monochromatic infrared energy (MIRE) on participants with knee osteoarthritis (OA). Patients were assessed according to the International Classification of Functioning, Disability and Health. Background MIRE is commonly used in therapy for patients with peripheral neuropathies. However, research has not focused intensively on the therapeutic effects of MIRE in patients with knee OA. Methods This study enrolled 73 participants with knee OA. Participants received six 40-minute sessions of active or placebo MIRE treatment (890-nm wavelength; power, 6.24 W; energy density, 2.08 J/cm2/min; total energy, 83.2 J/cm2) over the knee joints for 2 weeks. International Classification of Functioning, Disability and Health-related outcomes were collected weekly over 4 weeks using the Knee injury and Osteoarthritis Outcome Score, Lysholm Knee Scale, Hospital Anxiety and Depression Scale, Multidimensional Fatigue Inventory, Chronic Pain Grade questionnaire, World Health Organization Quality of Life-brief version, and OA Quality of Life Questionnaire. Data were analyzed by repeated-measures analysis of variance. Results No statistically significant differences were found for the interaction of group by time for Knee injury and Osteoarthritis Outcome Score scores, including pain, other symptoms, function in daily living, function in sport and recreation, and knee-related quality of life. Scores on the Lysholm Knee Scale, Hospital Anxiety and Depression Scale, Multidimensional Fatigue Inventory, Chronic Pain Grade questionnaire, World Health Organization Quality of Life-brief version, and OA Quality of Life Questionnaire also showed no significant differences between the 2 groups at any of the 4 follow-up assessments. Conclusion Short-term MIRE therapy provided no beneficial effects to body functions, activities, participation, and quality of life in patients with knee OA. Level of Evidence Therapy, level 1b-. J Orthop Sports Phys Ther 2012;42(11):947–956, Epub 5 September 2012. doi:10.2519/jospt.2012.3881
A Web-Based Intervention to Improve and Prevent Low Back Pain Among Office Workers: A Randomized Controlled Trial
Authors: del Pozo-Cruz Borja , Adsuar Jose C. , Parraca Jose , del Pozo-Cruz Jesús , Moreno Antonio , Gusi Narcis 
Published: October 2012

Study Design Randomized controlled trial. Objectives To test the feasibility, safety, and efficacy of a web-based multidisciplinary intervention for office workers with subacute, nonspecific low back pain. Background Low back pain is one of the most frequent ailments seen in primary care consultations. Methods The trial included 100 office workers with subacute low back pain. The intervention group had access to both the study intervention and standard care. The control group had access to standard care only. Standard care was defined as all existing non- web-based interventions offered by the University of Extremadura's Preventive Medicine Service. The web-based program was offered via the Preventive Medicine Service website. The participants in the intervention group were asked to engage in the web-based program at their work site for 11 minutes each day, 5 days a week. Primary outcomes were functional disability, as measured by the Roland-Morris Disability Questionnaire, and health-related quality of life, as measured by the European Quality of Life-5 Dimensions-3 Levels. Secondary outcomes were the number of episodes of low back pain and trunk muscle endurance. Outcomes were measured before and after the 9-month intervention period. Results Over the 9-month study, the score on the Roland-Morris Disability Questionnaire for the participants in the web-based intervention group improved by a mean of −7.36 points (95% confidence interval [CI]: −8.41, −6.31) compared to a worsening of 1.89 points (95% CI: 0.71, 2.65) in the control group. The between-group difference in change on the Roland-Morris Disability Questionnaire over the study period was −9.25 points (95% CI: −10.57, −7.89). Similarly, over the 9-month study, the intervention group had a significant improvement in quality of life of 0.24 points (95% CI: 0.20, 0.29) compared to the control group. Conclusion A 9-month web-based intervention is feasible and effective to improve function and health-related quality of life and to decrease episodes of low back pain among office workers with a history of subacute, nonspecific low back pain. Level of Evidence Therapy, level 1a. J Orthop Sports Phys Ther 2012;42(10):831–841, Epub 2 August 2012. doi:10.2519/jospt.2012.3980
Loading of the Knee Joint During Ergometer Cycling: Telemetric In Vivo Data
Authors: Kutzner Ines , Heinlein Bernd , Graichen Friedmar , Rohlmann Antonius , Halder Andreas M. , Beier Alexander , Bergmann Georg 
Published: October 2012

Study Design Within-subject, repeated-measures design. Objectives To measure tibiofemoral contact forces during cycling in vivo and to quantify the influences of power, pedaling cadence, and seat height on tibiofemoral contact forces. Background Cycling is usually classified as a low-demand activity for the knee joint and is therefore recommended for persons with osteoarthritis and rehabilitation programs following knee surgery. However, there are limited data regarding actual joint loading. Methods Instrumented knee implants with telemetric data transmission were used to measure the tibiofemoral contact forces. Data were obtained in 9 subjects, during ergometer cycling and walking, 15 ± 7 months after total knee arthroplasty. Tibiofemoral forces during cycling at power levels between 25 and 120 W, cadences of 40 and 60 rpm, and 2 seat heights were investigated. Results Within the examined power range, tibiofemoral forces during cycling were smaller than those during walking. At the moderate condition of 60 W and 40 rpm, peak resultant forces of 119% of body weight were measured during the pedal downstroke. Shear forces ranged from 5% to 7% of body weight. Forces increased linearly with cycling power. Higher cadences led to smaller forces. A lower seat height did not increase the resultant force but caused higher posterior shear forces. Conclusion Due to the relatively small tibiofemoral forces, cycling with moderate power levels is suited for individuals with osteoarthritis and rehabilitation programs following knee surgery, such as cartilage repair or total knee replacement. The lowest forces can be expected while cycling at a low power level, a high cadence, and a high seat height. J Orthop Sports Phys Ther 2012;42(12):1032–1038, Epub 5 September 2012. doi:10.2519/jospt.2012.4001
Translation and Cross-cultural Adaptation of the Lower Extremity Functional Scale Into a Brazilian Portuguese Version and Validation on Patients With Knee Injuries
Authors: Metsavaht Leonardo , Leporace Gustavo , Riberto Marcelo , Sposito Maria Matilde M. , del Castillo Letícia N.C. , Oliveira Liszt P. , Batista Luiz Alberto 
Published: October 2012

Study Design Clinical measurement. Objective To translate and culturally adapt the Lower Extremity Functional Scale (LEFS) into a Brazilian Portuguese version, and to test the construct and content validity and reliability of this version in patients with knee injuries. Background There is no Brazilian Portuguese version of an instrument to assess the function of the lower extremity after orthopaedic injury. Methods The translation of the original English version of the LEFS into a Brazilian Portuguese version was accomplished using standard guidelines and tested in 31 patients with knee injuries. Subsequently, 87 patients with a variety of knee disorders completed the Brazilian Portuguese LEFS, the Medical Outcomes Study 36-Item Short-Form Health Survey, the Western Ontario and McMaster Universities Osteoarthritis Index, and the International Knee Documentation Committee Subjective Knee Evaluation Form and a visual analog scale for pain. All patients were retested within 2 days to determine reliability of these measures. Validation was assessed by determining the level of association between the Brazilian Portuguese LEFS and the other outcome measures. Reliability was documented by calculating internal consistency, test-retest reliability, and standard error of measurement. Results The Brazilian Portuguese LEFS had a high level of association with the physical component of the Medical Outcomes Study 36-Item Short-Form Health Survey (r = 0.82), the Western Ontario and McMaster Universities Osteoarthritis Index (r = 0.87), the International Knee Documentation Committee Subjective Knee Evaluation Form (r = 0.82), and the pain visual analog scale (r = −0.60) (all, P<.05). The Brazilian Portuguese LEFS had a low level of association with the mental component of the Medical Outcomes Study 36-Item Short-Form Health Survey (r = 0.38, P<.05). The internal consistency (Cronbach α = .952) and test-retest reliability (intraclass correlation coefficient = 0.957) of the Brazilian Portuguese version of the LEFS were high. The standard error of measurement was low (3.6) and the agreement was considered high, demonstrated by the small differences between test and retest and the narrow limit of agreement, as observed in Bland-Altman and survival-agreement plots. Conclusion The translation of the LEFS into a Brazilian Portuguese version was successful in preserving the semantic and measurement properties of the original version and was shown to be valid and reliable in a Brazilian population with knee injuries. J Orthop Sports Phys Ther 2012;42(11):932–939, Epub 9 October 2012. doi:10.2519/jospt.2012.4101
The Effects of Thoracic Spine Manipulation in Subjects With Signs of Rotator Cuff Tendinopathy
Authors: Muth Stephanie , Barbe Mary F. , Lauer Richard , McClure Philip 
Published: October 2012

Study Design Controlled laboratory study. Objectives To assess scapular kinematics and electromyographic signal amplitude of the shoulder musculature, before and after thoracic spine manipulation (TSM) in subjects with rotator cuff tendinopathy (RCT). Changes in range of motion, pain, and function were also assessed. Background There are various treatment techniques for RCT. Recent studies suggest that TSM may be a useful component in the management of pain and dysfunction associated with RCT. Methods Thirty subjects between 18 and 45 years of age, who showed signs of RCT, participated in this study. Changes in scapular kinematics and muscle activity, as well as changes in shoulder pain and function, were assessed pre-TSM and post-TSM using paired t tests and repeated-measures analyses of variance. Results TSM did not lead to changes in range of motion or scapular kinematics, with the exception of a small decrease in scapular upward rotation (P = .05). The only change in muscle activity was a small but significant increase in middle trapezius activity (P = .03). After TSM, subjects demonstrated decreased pain during performance of the Jobe empty-can (mean ± SD change, 2.6 ± 1.1), Neer (2.6 ± 1.3), and Hawkins-Kennedy (2.8 ± 1.3) tests (all, P<.001). Subjects also reported decreased pain with shoulder flexion (mean ± SD change, 2.0 ± 1.5; P<.001) and improved shoulder function (force production, 2.5 ± 1.4 kg; Penn Shoulder Score, 7.7 ± 9.4; sports/performing arts module of the Disabilities of the Arm, Shoulder and Hand questionnaire, 16.4 ± 13.2) (all, P<.001). Conclusion Immediate improvements in shoulder pain and function post-TSM are not likely explained by alterations in scapular kinematics or shoulder muscle activity. For people with pain associated with RCT, TSM may be an effective component of their treatment plan to improve pain and function. However, further randomized controlled studies are necessary to better validate this treatment approach. Level of Evidence Therapy, level 4. J Orthop Sports Phys Ther 2012;42(12):1005–1016. Epub 17 August 2012, doi:10.2519/jospt.2012.4142
A 12-Week Exercise Therapy Program in Middle-Aged Patients With Degenerative Meniscus Tears: A Case Series With 1-Year Follow-up
Authors: Stensrud Silje , Roos Ewa M. , Risberg May Arna 
Published: October 2012

Study Design Case series. Background Exercise is a viable treatment alternative to arthroscopic partial meniscectomy in patients with degenerative meniscus tears. No study has reported in detail the type of exercises, progression, tolerance, and potential benefit from an exercise therapy program in these patients who have not had surgery. This case report describes a progressive exercise therapy program aimed at improving neuromuscular function and muscle strength in middle-aged patients with degenerative meniscus tears, the outcome over a 12-week period, and the ability to maintain improvements up to 1 year. Case Description The first 20 patients (age range, 38–58 years) included in an ongoing randomized controlled trial. Outcomes Outcomes data included the Knee injury and Osteoarthritis Outcome Score, a 7-point global rating of change scale, isokinetic knee muscle strength tests, and 3 lower extremity performance tests. Postintervention, 16 of 20 patients showed clinically meaningful changes (greater than 10 points) on the Knee injury and Osteoarthritis Outcome Score knee-related quality of life subscale, 19 of 20 patients rated themselves as “a lot better” or “better” on the global rating of change scale, all patients had increased quadriceps muscle strength, and the majority of patients improved on the lower extremity performance tests. At 1 year postintervention, the majority of patients had maintained the improvements and none of the patients had undergone surgery. Discussion The described neuromuscular- and strength-training program should be considered for rehabilitation of middle-aged individuals with degenerative meniscus tears. However, head-to-head comparison of programs in a randomized design is needed to determine if this specific program is significantly better than other interventions. US trial registration NCT01002794. Level of Evidence Therapy, level 4. J Orthop Sports Phys Ther 2012;42(11):919–931, Epub 5 September 2012. doi:10.2519/jospt.2012.4165
Magnetic Resonance Imaging Changes in the Size and Shape of the Oropharynx Following Acute Whiplash Injury
Authors: Elliott James M. , Pedler Ashley R. , Theodoros Deborah , Jull Gwendolen A. 
Published: October 2012

Study Design Prospective longitudinal. Objective To quantify the temporal development of magnetic resonance imaging changes in oropharyngeal morphometry in subjects with varying levels of disability following a whiplash injury. Background A recent cross-sectional investigation has identified reductions in the size and shape of the oropharynx in subjects with chronic whiplash-related disability when compared to healthy controls. The temporal development of such changes and their relationship to persistent disability have yet to be investigated. Methods Forty-one subjects (30 women) with acute whiplash injury were included. Repeated-measures T1-weighted magnetic resonance imaging was used to measure and compare cross-sectional area (CSA) in square millimeters and shape ratio (SR) of the oropharynx at 4 weeks, 3 months, and 6 months postinjury. Subjects were classified at 6 months by their Neck Disability Index scores into the following categories: recovered (less than 8%), mild disability (10%–28%), and moderate/severe disability (greater than 30%). The effects of time and group and the interaction effect of group by time on oropharynx morphometry (CSA, SR) were investigated using repeated-measures, linear, mixed-model analysis. Based on previous research findings, age, gender, and body mass index were entered into the analyses as covariates. Where significant main or interaction effects were detected, pairwise comparisons were performed to investigate specific differences in the dependent variable between groups and within groups over time. Results There was a significant interaction effect for group by time for both the CSA and SR values. Age significantly influenced SR (P = .024) and body mass index significantly influenced CSA (P = .001). There was no difference in CSA or SR across all groups at 4 weeks postinjury. However, at 6 months, CSA was significantly different between the recovered group and the moderate/severe group (P = .001). The recovered group demonstrated a significant increase in CSA (P = .04) over time, whereas the moderate/severe group significantly decreased (P = .01). At 6 months, the moderate/severe group had a reduced SR compared to the mild group (P = .03). No differences in CSA or SR of the oropharynx were found between the mild and recovered groups throughout the study. Conclusion Temporal reductions in CSA of the oropharynx occur following whiplash and persist to a greater extent in those with moderate/severe symptoms at 6 months postinjury. Studies are planned (1) to better investigate the underlying mechanisms of CSA reductions, (2) to determine their relevance to functional recovery and production of voice following whiplash, and (3) to evaluate multidisciplinary assessment and management of these patients. J Orthop Sports Phys Ther 2012;42(11):912–918. Epub 17 August 2012. doi:10.2519/jospt.2012.4280
MECHANICAL PULPING.Analysis method of high-consistency chip refiner forces
Authors: Fredrikson Antti , Salminen Lauri I. 
Published: October 2012

Abstract
We introduce a new method of processing irregular data rrom any rotating machine, in particular high-consistency pulp refiners. Refiner plate bar forces and rotor absolute angle are acquired synchronously, and a fuzzy gate is exploited to filter instantaneous force events from background noise. Fuzzy gate parameters are partially justified by plate geometry. The method enables the acquisition of quantified and detailed spatial information on refiner plate bar forces, thus supporting the design of more energy efficient refiner plates and bar patterns. The study identifie.s key areas of application for synchronized force analysis in high-consistency pulping research.