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Pelletier R, Higgins J, Bourbonnais D. Laterality recognition of images, motor performance, and aspects related to pain in participants with and without wrist/hand disorders: An observational cross-sectional study. Musculoskelet Sci Pract 2018; 35:18-24. [PMID: 29427866 DOI: 10.1016/j.msksp.2018.01.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 01/15/2018] [Accepted: 01/24/2018] [Indexed: 01/30/2023]
Abstract
OBJECTIVE Musculoskeletal disorders are associated with altered sensory, proprioceptive and cognitive processes. Sensory processes affect the internal cortical representation of the body in space, the body schema, which in turn influences motor control. The purpose of this study was to determine if participants with wrist/hand disorders had impaired performance on a task associated with the body schema, the Left/Right Judgement Task (LRJT) and secondly how LRJT performance, motor performance, disability, pain and related aspects are associated. METHODS Fifteen healthy control participants and 15 participants with hand/wrist pain were asked to determine the laterality of images of hands. Measures of motor performance (Purdue Pegboard test), self-reported disability (Australian Canadian Hand Index), and pain related aspects (pain intensity, symptom duration, pain interference and affective distress) were recorded. RESULTS Participants with wrist/hand pain scored lower on all segments of the Purdue Pegboard test. There were differences in LRJT performance between groups for both Accuracy (p = 0.03) and Reaction Time (RT) (p < 0.01). There was no correlation between RT and Accuracy with pain intensity, pain duration, and disability. Both motor performance (r = 0.58-0.64) and LRJT performance Accuracy (r = 0.59) and RT (r = -0.56) were correlated with affective distress. A significant correlation was observed between RT and motor performance in healthy control participants (r = -0.56, p = 0.03) but not in participants with wrist/hand pain (r = -0.26, p = 0.44). CONCLUSIONS LRJT and motor performance was correlated with affective distress in participants with wrist/hand pain suggestive of complex interactions between cognitive-affective processes and sensorimotor integration.
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Efanov JI, Papanastasiou C, Arsenault J, Moreau M, Pomey MP, Higgins J, Danino MA. Contribution of patient-advisors during rehabilitation for replantation of digits improves patient-reported functional outcomes: A presentation of concept. HAND SURGERY & REHABILITATION 2018; 37:S2468-1229(18)30060-4. [PMID: 29793756 DOI: 10.1016/j.hansur.2018.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 04/13/2018] [Accepted: 04/25/2018] [Indexed: 12/15/2022]
Abstract
Clinical approach to surgical patients has evolved to include previous patients as part of the treating team in the role of "patient-advisors". Knowing that compliance to rehabilitation protocols is significant for a successful functional hand replantation, we set out to quantify functional patient-reported outcomes in individuals enrolled in a Patient-Advisor Program (PAP). We performed a prospective cohort pilot study of all patients admitted for a finger replantation between July 2015 to January 2016. All patients were offered to partake in the PAP, or else they would constitute the control group. Primary endpoints were functional outcomes as reported by patients at 6-8weeks and 4-6months of follow-up. Secondary endpoints were patient-reported pain and quality of life questionnaires. In total, 62 patients were admitted for finger replantation in the studied period, in which 50 agreed to participate in the study, including 7 in the patient-advisors group and 43 in the control group. Patients from the patient-advisors group fared better on mean scores of the Disabilities of the Arm, Shoulder and Hand than controls (29.6 vs 34.8 respectively at 4-6months). Improvements in the McGill Pain Questionnaire were also greater in the studied group (19.9 vs 33.3 at 4-6months). Replantation patients benefiting from the PAP demonstrated superior functional outcomes on self-reported questionnaires, which could be explained by a better understanding of rehabilitation protocols and compliance when previous patients are active members of the treating team.
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Morser J, Shao Z, Nishimura T, Zhou Q, Zhao L, Higgins J, Leung LLK. Carboxypeptidase B2 and N play different roles in regulation of activated complements C3a and C5a in mice. J Thromb Haemost 2018; 16:991-1002. [PMID: 29383821 PMCID: PMC8491566 DOI: 10.1111/jth.13964] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Indexed: 12/24/2022]
Abstract
Essentials Two basic carboxypeptidases are present in plasma, B2 (CPB2) and N (CPN). Cpb2-/- and Cpn-/- mice were challenged in a hemolytic uremic syndrome (HUS) model vs. wild type. Cpb2-/- exacerbates HUS while Cpn-/- exacerbates cobra venom factor challenge vs. wild type mice. CPB2 and CPN have overlapping but non-redundant roles. SUMMARY Background There are two basic carboxypeptidases in plasma. Carboxypeptidase B2 (CPB2) is activated from a circulating zymogen, proCPB2, and carboxypeptidase N (CPN) is constitutively active with both inactivating complement C3a and C5a. Aims To test the roles of CPB2 and CPN in complement-driven mouse models of cobra venom factor (CVF) challenge and hemolytic-uremic syndrome (HUS). Methods Cpb2-/- , Cpn-/- and wild-type (WT) mice were compared in an HUS model induced by Shiga toxin and lipopolysaccharide administration and following CVF administration. Results HUS was exacerbated in Cpb2-/- mice more than in Cpn-/- mice, compared with WT mice. Cpb2-/- mice developed the HUS clinical triad of microangiopathic hemolytic anemia, uremia and thrombocytopenia. Treatment with anti-C5 antibody improved survival of both Cpb2-/- and Cpn-/- mice. In contrast, when challenged acutely with CVF, the reverse phenotype was observed. Cpn-/- mice had markedly worse disease than Cpb2-/- mice, whereas the WT mice were resistant. Conclusions CPN and CPB2 play overlapping but non-redundant roles in regulating complement activation in vivo. The constitutively active CPN is key for inactivation of systemic C5a, whereas CPB2 functions as an on-demand supplementary anaphylatoxin inhibitor in inactivating excessive C5a formed locally.
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Broussard JL, Morton SJ, McHill AW, Higgins J, Melanson EK, Wright KP. 0040 Elevated 24-hour Free Fatty Acids During Circadian Misalignment. Sleep 2018. [DOI: 10.1093/sleep/zsy061.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Pelletier R, Bourbonnais D, Higgins J. Nociception, pain, neuroplasticity and the practice of Osteopathic Manipulative Medicine. INT J OSTEOPATH MED 2018. [DOI: 10.1016/j.ijosm.2017.08.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Paquette P, El Khamlichi Y, Lamontagne M, Higgins J, Gagnon DH. Comparison of longitudinal excursion of a nerve-phantom model using quantitative ultrasound imaging and motion analysis system methods: A convergent validity study. ULTRASOUND : JOURNAL OF THE BRITISH MEDICAL ULTRASOUND SOCIETY 2018; 25:143-149. [PMID: 29410689 DOI: 10.1177/1742271x17700452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 02/10/2017] [Indexed: 11/16/2022]
Abstract
Background Quantitative ultrasound imaging is gaining popularity in research and clinical settings to measure the neuromechanical properties of the peripheral nerves such as their capability to glide in response to body segment movement. Increasing evidence suggests that impaired median nerve longitudinal excursion is associated with carpal tunnel syndrome. To date, psychometric properties of longitudinal nerve excursion measurements using quantitative ultrasound imaging have not been extensively investigated. Methods This study investigates the convergent validity of the longitudinal nerve excursion by comparing measures obtained using quantitative ultrasound imaging with those determined with a motion analysis system. A 38-cm long rigid nerve-phantom model was used to assess the longitudinal excursion in a laboratory environment. The nerve-phantom model, immersed in a 20-cm deep container filled with a gelatin-based solution, was moved 20 times using a linear forward and backward motion. Three light-emitting diodes were used to record nerve-phantom excursion with a motion analysis system, while a 5-cm linear transducer allowed simultaneous recording via ultrasound imaging. Results Both measurement techniques yielded excellent association (r = 0.99) and agreement (mean absolute difference between methods = 0.85 mm; mean relative difference between methods = 7.48 %). Small discrepancies were largely found when larger excursions (i.e. > 10 mm) were performed, revealing slight underestimation of the excursion by the ultrasound imaging analysis software. Conclusion Quantitative ultrasound imaging is an accurate method to assess the longitudinal excursion of an in vitro nerve-phantom model and appears relevant for future research protocols investigating the neuromechanical properties of the peripheral nerves.
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da Silva RL, Labrecque D, Caromano FA, Higgins J, Frak V. Manual action verbs modulate the grip force of each hand in unimanual or symmetrical bimanual tasks. PLoS One 2018; 13:e0192320. [PMID: 29401468 PMCID: PMC5798821 DOI: 10.1371/journal.pone.0192320] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 01/22/2018] [Indexed: 11/18/2022] Open
Abstract
Manual action verbs modulate the right-hand grip force in right-handed subjects. However, to our knowledge, no studies demonstrate the ability to accomplish this modulation during bimanual tasks nor describe their effect on left-hand behavior in unimanual and bimanual tasks. Using load cells and word playlists, we evaluated the occurrence of grip force modulation by manual action verbs in unimanual and symmetrical bimanual tasks across the three auditory processing phases. We found a significant grip force increase for all conditions compared to baseline, indicating the occurrence of modulation. When compared to each other, the grip force variation from baseline for the three phases of both hands in the symmetrical bimanual task was not different from the right-hand in the unimanual task. The left-hand grip force showed a lower amplitude for auditory phases 1 and 2 when compared to the other conditions. The right-hand grip force modulation became significant from baseline at 220 ms after the word onset in the unimanual task. This moment occurred earlier for both hands in bimanual task (160 ms for the right-hand and 180 for the left-hand). It occurred later for the left-hand in unimanual task (320 ms). We discuss the hypothesis that Broca's area and Broca's homologue area likely control the left-hand modulation in a unilateral or a bilateral fashion. These results provide new evidence for understanding the linguistic function processing in both hemispheres.
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Thaventhiran A, Higgins J, Lindsell C. The Perceived Benefits That a Laparoscopic Simulated Box Trainer Gives to Core Surgical Trainees. Int J Surg 2017. [DOI: 10.1016/j.ijsu.2017.08.359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Higgins J, Bashir J, Abel J, Daniele P, Lee M, Humphries K. DOES DUAL-ANTIPLATELET THERAPY DECREASE THE RISK OF STROKE FOLLOWING CORONARY ARTERY BYPASS GRAFTING? Can J Cardiol 2017. [DOI: 10.1016/j.cjca.2017.07.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Fan J, Voisin J, Milot MH, Higgins J, Boudrias MH. Transcranial direct current stimulation over multiple days enhances motor performance of a grip task. Ann Phys Rehabil Med 2017; 60:329-333. [PMID: 28797624 DOI: 10.1016/j.rehab.2017.07.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 07/07/2017] [Accepted: 07/07/2017] [Indexed: 10/19/2022]
Abstract
BACKGROUND Recovery of handgrip is critical after stroke since it is positively related to upper limb function. To boost motor recovery, transcranial direct current stimulation (tDCS) is a promising, non-invasive brain stimulation technique for the rehabilitation of persons with stroke. When applied over the primary motor cortex (M1), tDCS has been shown to modulate neural processes involved in motor learning. However, no studies have looked at the impact of tDCS on the learning of a grip task in both stroke and healthy individuals. OBJECTIVE To assess the use of tDCS over multiple days to promote motor learning of a grip task using a learning paradigm involving a speed-accuracy tradeoff in healthy individuals. METHODS In a double-blinded experiment, 30 right-handed subjects (mean age: 22.1±3.3 years) participated in the study and were randomly assigned to an anodal (n=15) or sham (n=15) stimulation group. First, subjects performed the grip task with their dominant hand while following the pace of a metronome. Afterwards, subjects trained on the task, at their own pace, over 5 consecutive days while receiving sham or anodal tDCS over M1. After training, subjects performed de novo the metronome-assisted task. The change in performance between the pre and post metronome-assisted task was used to assess the impact of the grip task and tDCS on learning. RESULTS Anodal tDCS over M1 had a significant effect on the speed-accuracy tradeoff function. The anodal tDCS group showed significantly greater improvement in performance (39.28±15.92%) than the sham tDCS group (24.06±16.35%) on the metronome-assisted task, t(28)=2.583, P=0.015 (effect size d=0.94). CONCLUSIONS Anodal tDCS is effective in promoting grip motor learning in healthy individuals. Further studies are warranted to test its potential use for the rehabilitation of fine motor skills in stroke patients.
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Higgins J, Bashir J, Abel J, Humphries K, Daniele P, Lee M. P3968Does dual-antiplatelet therapy decrease the risk of stroke following coronary artery bypass grafting? Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Higgins J, Bashir J, Abel J, Daniele P, Lee M, Humphries K. P3967Influence of peri-operative stroke on 5-year mortality following open heart surgery. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Aggarwal S, Agrawal Y, Higgins J, Pavlides G, Gupta V. P2963Impact of coronary artery disease on clinical outcomes after transcatheter aortic valve replacement. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p2963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kušar D, Zajc U, Jenčič V, Ocepek M, Higgins J, Žolnir-Dovč M, Pate M. Mycobacteria in aquarium fish: results of a 3-year survey indicate caution required in handling pet-shop fish. JOURNAL OF FISH DISEASES 2017; 40:773-784. [PMID: 27747884 DOI: 10.1111/jfd.12558] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 07/29/2016] [Accepted: 07/29/2016] [Indexed: 06/06/2023]
Abstract
Fish are commonly infected with non-tuberculous mycobacteria (NTM), which should be regarded as potential pathogens when handling aquarium fish and equipment. This study examined 107 aquarium fish from pet shops. Cultivation of the fish samples using different selective media was conducted for identification of NTM. Isolates were identified using the GenoType Mycobacterium common mycobacteria and additional species assays, sequencing of the 16S rRNA and rpoB genes, and real-time PCR assay for identification of Mycobacterium (M.) marinum. Among the investigated fish, 79.4% (85/107) were positive for mycobacteria, with 8.2% (7 of 85) having two mycobacterial species present. Among the positive fish, the common pathogens M. marinum, Mycobacterium fortuitum (M. fortuitum group) and Mycobacterium chelonae were identified in approx. 90% of fish and other NTM species in 10%, including Mycobacterium peregrinum/septicum, Mycobacterium gordonae, Mycobacterium arupense, Mycobacterium kansasii, Mycobacterium ulcerans and Mycobacterium setense. The well-known human pathogen M. marinum was present in 10.6% of the positive fish (9 of 85). The species of mycobacteria identified in the study are not only recognized as aquarium fish pathogens, but can also cause pathology in humans. Microbiological and clinical communities should therefore be sensitized to the role of NTM in infections associated with exposure to aquarium fish.
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Ritchie HK, Dear TB, Catenacci V, Shea K, Connick E, Moehlman TM, Stothard ER, Higgins J, Wright KP, Melanson EL. 0237 IMPACT OF DAYTIME BLUE-ENRICHED LIGHT EXPOSURE ON COGNITION DURING THE WORKDAY. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Stothard ER, McHill AW, Eckel RH, Higgins J, Melanson EL, Wright KP. 0081 FOOD INTAKE DURING EARLY MORNING SHIFTWORK AS A NOVEL RISK FACTOR FOR METABOLIC DYSREGULATION. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Pelletier R, Higgins J, Bourbonnais D. The relationship of corticospinal excitability with pain, motor performance and disability in subjects with chronic wrist/hand pain. J Electromyogr Kinesiol 2017; 34:65-71. [PMID: 28411487 DOI: 10.1016/j.jelekin.2017.04.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 03/25/2017] [Accepted: 04/05/2017] [Indexed: 10/19/2022] Open
Abstract
There is a growing body of evidence of changes in corticospinal excitability associated with musculoskeletal disorders, however there is a lack of knowledge of how these changes relate to measures of pain, motor performance and disability. An exploratory study was performed utilizing Transcranial Magnetic Stimulation to investigate differences in corticospinal excitability in the Abductor Pollicis Brevis (APB) between 15 pain-free subjects and 15 subjects with chronic wrist/hand pain and to determine how corticospinal excitability was associated with measures of pain (visual analog scale, AUSCAN™), hand motor performance (isometric and key pinch strength, Purdue Pegboard Test), disability (AUSCAN™), and spinal motoneuronal excitability. Input-output curves demonstrated increased corticospinal excitability of the APB in the affected hand of subjects with chronic pain (p<0.01). Changes in corticospinal excitability were significantly correlated with pain intensity (r=0.77), disability (r=0.58), and negatively correlated with motoneuronal excitability (r=-0.57). Corticospinal excitability in subjects with heterogeneous injuries of the wrist/hand was associated with disability and pain.
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Peters G, Cleveland B, Higgins J, Butler F, Meghen C. A Genetic Method To Evaluate the Prevalence of Unique DNA Profiles between Sequential Ground Beef Batches. J Food Prot 2017; 80:425-430. [PMID: 28199149 DOI: 10.4315/0362-028x.jfp-16-221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The delineation of ground beef batches has implications for the management of product disposition policies in the event of Shiga toxin-producing Escherichia coli contamination. Analysis of individual contributor animal-specific DNA profiles can provide valuable empirical data for understanding the dynamics of ground meat production processes and can act as a surrogate for cross-contamination. A genetic method was developed for characterizing the source raw material flow and carryover between discrete batches of ground beef in a large-scale commercial beef grinding operation. The application developed involves the introduction of a genetically distinct source raw material batch into the grinding system and comprehensive sampling of that index batch and subsequent batches followed by single nucleotide polymorphism genotyping of random subsamples. Capture-mark-recapture statistical techniques were used to estimate (i) the number of carcass contributors and (ii) the associated level of carryover between batches. Carryover, expressed as a percentage of the total weight of the batch material (in pounds), was observed between the genetically distinct index batch and the next sequential batch at approximately 1%. The nondetection of additional carryover to subsequent batches, with a detection level of approximately 0.2%, supports a serial dilution model of same source raw material carryover, consistent with the recorded weight of beef trimmings used in each batch. For ground beef manufacturers, this method is a simple approach for validating the independence of finished batches of beef in their grind systems in support of product disposition policies.
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Boissinot M, King H, Adams M, Higgins J, Steele LP, Wurdak H, Bond J, Tomlinson DC, Lawler SE, Short SC. P01.01 Ectopic expression of microRNA-1300 in adult and paediatric glioma cells induces cytokinesis failure and apoptosis via ECT2. Neuro Oncol 2016. [DOI: 10.1093/neuonc/now188.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zeal C, Higgins J, Newton S. The role of patient-perceived autonomy in regard to long-acting reversible contraceptive methods. Contraception 2016. [DOI: 10.1016/j.contraception.2016.07.115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Higgins J, Popkin R, Carpenter E, Francis J, Warren W. Which measures of pregnancy ambivalence are most strongly associated with contraceptive use? Contraception 2016. [DOI: 10.1016/j.contraception.2016.07.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Lin A, Bezjak A, Lim G, Le L, Higgins J, Bissonnette J, Sun A. Does Early Tumor Regression Observed on Cone Beam Computed Tomography During Chemoradiation Therapy Predict Favorable Outcome in Locally Advanced Lung Adenocarcinoma? Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Angermeier WF, Philhour P, Higgins J. Early Experience and Social Grouping in Fear Extinction of Rats. Psychol Rep 2016. [DOI: 10.2466/pr0.1965.16.3c.1005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Rats, conditioned to escape shock in a straight 6-ft. runway, were tested for the effects which early rearing and presence of different numbers of social animals had on fear-conditioned escape responses. The most significant findings were that: (a) for animals reared apart, the presence of another animal or animals had little or no effect upon fear-conditioned escape behavior; (b) for animals reared together, the presence of other animals resulted in fear reduction; (c) this fear-reducing influence of other animals seemed to have developed during the early life in a social situation; and (d) the group had to consist of at least three animals before its effects in fear situations were apparent.
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Mayo NE, Kaur N, Barbic SP, Fiore J, Barclay R, Finch L, Kuspinar A, Asano M, Figueiredo S, Aburub AS, Alzoubi F, Arafah A, Askari S, Bakhshi B, Bouchard V, Higgins J, Hum S, Inceer M, Letellier ME, Lourenco C, Mate K, Salbach NM, Moriello C. How have research questions and methods used in clinical trials published in Clinical Rehabilitation changed over the last 30 years? Clin Rehabil 2016; 30:847-64. [PMID: 27496695 PMCID: PMC4976657 DOI: 10.1177/0269215516658939] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2016] [Accepted: 06/20/2016] [Indexed: 12/19/2022]
Abstract
Research in rehabilitation has grown from a rare phenomenon to a mature science and clinical trials are now common. The purpose of this study is to estimate the extent to which questions posed and methods applied in clinical trials published in Clinical Rehabilitation have evolved over three decades with respect to accepted standards of scientific rigour. Studies were identified by journal, database, and hand searching for the years 1986 to 2016.A total of 390 articles whose titles suggested a clinical trial of an intervention, with or without randomization to form groups, were reviewed. Questions often still focused on methods to be used (57%) rather than what knowledge was to be gained. Less than half (43%) of the studies delineated between primary and secondary outcomes; multiple outcomes were common; and sample sizes were relatively small (mean 83, range 5 to 3312). Blinding of assessors was common (72%); blinding of study subjects was rare (19%). In less than one-third of studies was intention-to-treat analysis done correctly; power was reported in 43%. There is evidence of publication bias as 83% of studies reported either a between-group or a within-group effect. Over time, there was an increase in the use of parameter estimation rather than hypothesis testing and there was evidence that methodological rigour improved.Rehabilitation trialists are answering important questions about their interventions. Outcomes need to be more patient-centred and a measurement framework needs to be explicit. More advanced statistical methods are needed as interventions are complex. Suggestions for moving forward over the next decades are given.
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