Diagnosis clinical criteria of sport related concussion: Toward an operational criteria definition in France.

OBJECTIVE: An expert working group was set up at the initiative of the French Ministry of Sports with the objective of harmonising the management of sport related concussion (SRC) in France, starting with its definition and diagnosis criteria. RESULTS: Definition: A clinical definition in 4 points have been established as follows: Concussion is a brain injury: 1) caused by a direct or indirect transmission of kinetic energy to the head; 2) resulting in an immediate and transient dysfunction of the brain characterised by at least one of the following disorders: a) Loss of consciousness, b) loss of memory, c) altered mental status, d) neurological signs; 3) possibly followed by one or more functional complaints (concussion syndrome); 4) the signs and symptoms are not explained by another cause. Diagnosis criteria: In the context of the direct or indirect transmission of kinetic energy to the head, the diagnosis of concussion may be asserted if at least one of the following signs or symptoms, observed or reported, is present within the first 24hours and not explained by another cause: 1) loss of consciousness; 2) convulsions, tonic posturing; 3) ataxia; 4) visual trouble; 5) neurological deficit; 6) confusion; 7) disorientation; 8) unusual behaviour; 9) amnesia; 10) headaches; 11) dizziness; 12) fatigue, low energy; 13) feeling slowed down, drowsiness; 14) nausea; 15) sensitivity to light/noise; 16) not feeling right, in a fog; 17) difficulty concentrating. CONCLUSION: Sharing the same definition and the same clinical diagnostic criteria for concussion is the prerequisite for common rules of management for all sports and should allow the pooling of results to improve our knowledge of this pathology.

Post-stroke pathway analysis and link with one year sequelae in a French cohort of stroke patients: the PAPASePA protocol study.

BACKGROUND: Stroke is a health problem with serious consequences, both in terms of mortality, and after-effects affecting patient quality of life. Stroke requires both urgent and chronic management involving the entire health care system. Although large variability in the management of stroke patients have been noticed, knowledge of the diversity and the scalability of post-stroke pathways, whether it is the care pathway or the life pathway, is currently not sufficient. Moreover the link between post-stroke pathways and patients sequelae have not been yet clearly defined. All this information would be useful to better target the needs to improve stroke patient management. The purposes are to identify the post-stroke life pathways components associated with sequelae (activity limitations - main purpose, cognitive disorders, anxio-depressive disorders, fatigue, participation restrictions) at 3 months and 1 year post-stroke, to define a typology of life pathways of patients during the post-stroke year and to analyze the social and geographical inequalities in the management of stroke. METHODS: Design: a prospective multicenter comparative cohort study with a follow up to 1 year after the acute episode. Participant centers: 13 hospitals in the Aquitaine region (France). STUDY POPULATION: patients diagnosed with a confirmed ischemic or hemorrhagic stroke included in the Aquitaine Observatory of Stroke (ObA2) cohort and voluntary to participate. Data sources are existing databases (ObA2 database and the French National Health Data System - SNDS) to collect information about care pathways, patient characteristics and stroke characteristics and Ad hoc surveys to collect information about life pathways and post-stroke sequelae. The endpoints of the study are post-stroke activity limitations evaluated by the modified Rankin score, other post-stroke sequelae (Cognitive disorders, anxio-depressive disorders, fatigue, restriction of participation) assessed by standardized and validated scales and Clusters of patients responding to pathways with common or similar characteristics.; DISCUSSION: By integrating a longitudinal dimension and relying on a large cohort, the project will make it possible to identify the sources of disturbances and the factors favorable to the outcome of the life pathways, important for the planning of the offer and the management of the public policies concerning stroke pathways. TRIAL REGISTRATION: ClinicalTrials.gov ID: NCT03865173 , March 6th, 2019.

[Analysis of the discrimination of the final marks after the first computerized national ranking exam in Medicine in June 2016 in France]. / Analyse de la discrimination des notes aux ECN informatisées de 2016.

INTRODUCTION: The first computerised national ranking exam (cNRE) in Medicine was introduced in June 2016 for 8214 students. It was made of 18 progressive clinical cases (PCCs) with multiple choice questions (MCQs), 120 independent MCQs and 2 scientific articles to criticize. A lack of mark discrimination grounded the cNRE reform. We aimed to assess the discrimination of the final marks after this first cNRE. METHODS: A national Excel® file gathering overall statistics and marks were transmitted to the medical faculties after the cNRE. The mean points deviation between two papers and the percentage of points ranking 75% of students allowed us to analyse marks' discrimination. RESULTS: The national distribution sigmoid curve of the marks is superimposable with previous NRE in 2015. In PCCs, 72% of students were ranked in 1090 points out of 7560 (14%). In independents MCQs, 73% of students were ranked in 434 points out of 2160 (20%). In critical analysis of articles, 75% of students were ranked in 225 points out of 1080 (21%). The above percentages of students are on the plateau of each discrimination curve for PCCs, independent MCQs and critical analysis of scientific articles. CONCLUSION: The cNRE reduced equally-ranked students compared to 2015, with a mean deviation between two papers of 0.28 in 2016 vs 0.04 in 2015. Despite the new format introduced by the cNRE, 75% of students are still ranked in a low proportion of points that is equivalent to previous NRE in 2015 (between 15 et 20% of points).

[Educational assessment of the first computerized national ranking exam in France in 2016: Opportunities for improvement]. / Analyse docimologique des premières Épreuves classantes nationales informatisées (ECNi) de 2016 : propositions d'amélioration.

In June 2016, 8124 medical students in their sixth year of graduation passed the first computerized national ranking exam (CNRE) in France after which they will have to choose what medical specialty they will be practicing all their life. We conducted the first educational assessment of this CNRE according to two criteria: the relevance of the questions and the cognitive domain mainly required to answer these questions. We propose two improvements for the future CNRE: promote student reasoning in the multiple choices questions, reduce to 10 the number of multiple choice questions in the progressive clinical cases and increase by 9 their total number (from 18 to 27), and use a majority of mini-clinical cases for isolated multiple choice questions in order to focus students on reasoning instead of simple knowledge restitution.

Five-year follow-up of persons with brain injury entering the French vocational and social rehabilitation programme UEROS: Return-to-work, life satisfaction, psychosocial and community integration.

BACKGROUND: Social and vocational reintegration of persons with brain injury is an important element in their rehabilitation. AIMS: To evaluate the 5-year outcome of persons with brain injury included in 2008 in the Aquitaine Unit for Evaluation, Training and Social and Vocational Counselling programme (UEROS). METHOD: 57 persons with brain injury were recruited from those who completed the 2008 UEROS programme. Five years later, an interview was done to assess family and vocational status, autonomy and life satisfaction. These results were compared with those from persons completing the 1997-1999 programme. RESULTS: The typical person entered the 2008 UEROS programme 6 years after a severe brain injury (42%) and was male, single and 35 years. At the 5-year follow-up, more persons lived with a partner (+23%) and lived in their own home (+21%). 47% were working vs 11% on entering the programme. Approximately half were satisfied or very satisfied with their quality of life. Having a job in 2013 was associated with a high education level, less cognitive sequelae, having a job in 2008 and no health condition. CONCLUSIONS: The UEROS programme is effective with regard to return-to-work and improvement of autonomy in persons with brain injury, irrespective of length of time from injury.

No beneficial effect of bracing after anterior cruciate ligament reconstruction in a cohort of 969 athletes followed in rehabilitation.

OBJECTIVE: Compare the clinical outcomes of different knee braces in the early phase of rehabilitation after anterior cruciate ligament reconstruction (ACLR) in athletes. MATERIALS AND METHODS: We conducted a retrospective database study of athletes during early rehabilitation in a tertiary referral hospital between 1 February 2008 and 30 October 2010 after ACLR using bone patellar tendon bone (BPTB) or hamstring autograft. Differences in mid-patellar knee circumference, pain, and range of motion were assessed at admission. All patients followed the same rehabilitation protocol. Patients who had complications preventing them from following the assigned rehabilitation program were analyzed separately. Patients who completed their rehabilitation program were also assessed for thigh muscle atrophy, extension deficit≥2°, quality of walking, PPLP1 and subjective IKDC scores. The type and frequency of complications and their frequency was documented. The above-mentioned parameters were analyzed in 3 different groups: rigid brace in full extension, articulated brace (0°-90° for first 3 weeks then 0-120°) or no brace. RESULTS: The analysis included 969 patients. Rehabilitation started at 4.5±2.9 days after surgery and ended at 32.4±3.0 days postoperative. At the beginning, flexion was lower in patients with a rigid brace (P<0.01). There was no difference in the frequency or severity of complications between the three study groups, nor was there a significant difference in the clinical outcomes listed above. CONCLUSION: Postoperative bracing after ACLR has not beneficial effect on clinical outcomes and the complication rate. Patients who wore the rigid brace had limited flexion early on.

Post-acute referral of stroke victims in a French urban area: Results of a specific program.

OBJECTIVE: The main objective of this study was to describe the distribution of referrals offered to patients assessed in the "Post-Acute Stroke program" of Bordeaux University Hospital (France). This program was developed in 2008 to organize the dispensation of care in rehabilitation units specialized in neurological diseases. MATERIAL AND METHODS: This was a single-centre observational study. Between July 2008 and December 2012, data on the number of stroke patients hospitalized at the Bordeaux University Hospital and their post-acute referral were collected from the local hospital discharge database. Some of these patients were assessed by Physical Rehabilitation and Medicine physicians participating in the program. Proposed and actual referrals, time from admission to assessment and functional status were also collected. RESULTS: Among 4189 stroke patients, 1465 (35%) survivors were assessed, of whom 932 (22.2%) were discharged to inpatient rehabilitation facilities. There were no patients discharged to this type of unit without an assessment. Among the 1465 patients who were assessed, 57.2% were referred to specialized rehabilitation units, 6.3% were discharged to non-specialized rehabilitation units and 26% returned home directly. The median total length of stay in acute units varied from 10 to 15days depending on referral orientation. CONCLUSION: Patients that were assessed were more likely to be transferred to specialized rehabilitation units than to non-specialized rehabilitation units. The Post-Acute Stroke program has the particularity of combining private and public specialized rehabilitation units in a common collaborative referral system while retaining the control and flexibility of personalised referral for each patient in the light of local care availability.

Acquired deforming hypertonia and contractures in elderly subjects: definition and prevalence in geriatric institutions (ADH survey).

OBJECTIVE: By proposing a new terminology (acquired deforming hypertonia or ADH) and a new definition for contractures, the main objective of this study was to establish their prevalence among institutionalized elderly patients. Secondary objectives were to analyze the negative impact of ADH and collect the opinions of clinicians on the possible treatments available. METHODOLOGY: A multicenter cross-sectional study was conducted among residents of 39 geriatric institutions (29 EHPAD and 10 USLD). All subjects presenting at least one ADH were surveyed over a one-week period. RESULTS: Among 3145 observed patients (mean age 88.9±9.7 years) 22% (n=692) presented at least one ADH. In average, each patient presented 4.4±3.2 ADHs. Negative consequences on self-care, nursing and difficulties in getting dressed were most frequently observed. Only 25.4% of clinicians considered the ADH to be potentially reversible. Physical therapy was the therapeutic option most frequently chosen over medication and surgery. CONCLUSION: This study confirms the important prevalence of ADH among elderly institutionalized patients. Consequences on the level of dependence were significant. It seems relevant to elaborate hierarchical therapeutic strategies in order to counter these disorders and the fatalism that ensues.

Complications arising after thoracic aortic surgery: a case report on an unusual spinal cord infarction. Physiopathological and clinical considerations.

Even though new prevention techniques have been developed and are being used during thoraco-abdominal aortic repairs, spinal cord infarction remains a severe and relatively frequent complication of aortic surgery. Infarctions in the territory of the anterior spinal artery are considered the most common. Different clinical pictures related to spinal cord transverse extension wounds are drawn up. In this paper, we present a case report of a subject having presented an isolated motor deficit of the lower limbs and a favorable prognosis, suggesting selective involvement of the anterior horns of the spinal cord subsequent to surgical repair of an aortic dissection. We wish to review the relevant anatomical, clinical and diagnostic characteristics along with current techniques of spinal cord ischemia prevention during and after surgery.

Center of pressure path during Sit-to-walk tasks in young and elderly humans.

OBJECTIVE: This study aimed to investigate differences in total center of pressure (TCOP) paths during a Sit-to-Walk task in young and elderly subjects. METHOD: Nine young and 19 elderly subjects were asked to repeat five Sit-to-Walk tasks. The COP paths were computed during the rising from vertical forces. RESULTS: For 4 young and 17 elderly subjects, the TCOP moved on the anterior-posterior axis during the 1st period (from the beginning of the rising to maximal force under the swing leg) and then joined the stance foot during the 2nd period (from maximal force to the toe off). For the two other paths observed in young subjects, the duration of the 2nd period was increased (33% of total duration vs. 18%, P = 0.02) or the area of TCOP displacement during the 1st period was decreased. CONCLUSION: During the Sit-to-Walk task, different TCOP paths can be described in relation to age. These profiles are influenced by the level of postural stability required before initiating the first step. After further validation, the analysis of TCOP paths could be used to estimate the level of postural ability, especially in the elderly.

Psychotherapeutic follow up of out patients with traumatic brain injury: preliminary results of an individual neurosystemic approach.

UNLABELLED: Psychotherapy for affective/behaviour disorders after traumatic brain injury (TBI) remains complex and controversial. The neuro-systemic approach aims at broadening the scope in order to look at behaviour impairments in context of both patient's cognitive impairments and family dysfunctioning. OBJECTIVE: To report a preliminary report of a neuro-systemic psychotherapy for patients with TBI. PATIENTS AND METHODS: All patients with affective/behaviour disorders referred to the same physician experienced in the neuro-systemic approach were consecutively included from 2003 to 2007. We performed a retrospective analysis of an at least 1-year psychotherapy regarding the evolution of the following symptoms: depressive mood, anxiety, bipolar impairment, psychosis, hostility, apathy, loss of control, and addictive behaviours as defined by the DSM IV. Results were considered very good when all impairments resolved, good when at least one symptom resolved, medium when at least one symptom improved, and bad when no improvement occurred, or the patient stopped the therapy by himself. RESULTS: Forty-seven patients, 35 men and 12 women, with a mean age of 33.4 years, were included. Most suffered a severe TBI (mean Glasgow coma score: 6.4) 11 years on average before the inclusion. At the date of the study, 11 patients (23%) had a poor outcome, 23 (48%) suffered Moderate disability and 13 (27%) had a Good recovery on the GOS scale. All therapy sessions were performed by the same physician, with 10 sessions on average during 13.5 months. Results were classified very good in six cases (13%), good in 18 others (38%), medium in 10 patients (21%) and bad in 13 cases (27%). We observed a significant improvement of affective disorders, namely anxiety (P<0.001) depressive mood (P<0.001) and hostility (P<0.01). However, bipolar symptomatology, apathy, loss of control and addictive disorders did not improve. DISCUSSION/CONCLUSION: From our best knowledge, this is the first clinical report of neuro-systemic psychotherapy for affective/behaviour disturbances in TBI patients. This kind of therapy was shown to be feasible, with a high rate of compliance (72%). Psycho-affective disorders and hostility were shown to be more sensitive to therapy than other behaviour impairments. These preliminary findings have to be confirmed by prospective trials on broader samples of patients.

Physical and rehabilitation medicine (PRM) care pathways: "stroke patients".

This document is part of a series of documents designed by the French Physical and Rehabilitation Medicine Society (SOFMER) and the French Federation of PRM (FEDMER). These documents describe the needs for a specific type of patients; PRM care objectives, human and material resources to be implemented, chronology as well as expected outcomes. "Care pathways in PRM" is a short document designed to enable the reader (physicians, decision-maker, administrator, lawyer or finance manager) to quickly apprehend the needs of these patients and the available therapeutic care structures for proper organization and pricing of these activities. Stroke patients are divided into four categories according to the severity of the impairments, each one being treated according to the same six parameters according to the International Classification of Functioning, Disability and Health (WHO), while taking into account personal and environmental factors that could influence the needs of these patients.

Assessment of quality of life in stroke patients with hemiplegia.

UNLABELLED: Stroke is a major public health issue. Even though most hemiplegic stroke patients may obtain a good functional outcome, many remain dissatisfied with their lives. Indeed, quality of life and subjective well-being should be taken into account in any assessment of stroke survival. OBJECTIVE: To assess long-term quality of life in stroke patients (compared with healthy controls) and the corresponding determinants and predictive factors. METHOD: The patient population consisted of 80 of the 217 first-stroke survivors treated between January and June 2005 in the Clinical Neurosciences Department at Bordeaux University Hospital. After a mean follow-up period of 2 years, 24 patients were interviewed in their homes and data from the 56 others were obtained in a telephone interview. Demographic information, clinical status on admission and functional status (as assessed by Barthel Index) and depression (on the ADRS) at the time of the study visit were recorded. Quality of life was assessed by using the Sickness Impact Profile (SIP-65) and Bränholm and Fugl-Meyer's Satisfaction with Life Scale (LiSat 11). The patients' data were compared with those from 149 healthy controls. RESULTS: Life satisfaction and quality of life were significantly impaired in stroke patients, compared with controls. All life domains were impaired. The worst scores were observed for independence and health-related items in the LiSat 11 and the physical and communication items in the SIP-65. Quality of life was strongly correlated with functional independence, the persistence of hemiplegia and depressive mood, which is in agreement with literature findings. Neither gender nor the initial Rankin score had a significant impact on these parameters. DISCUSSION-CONCLUSION: Quality of life at 2 years is significantly impaired in stroke survivors and seems more difficult to predict than functional independence. However, in addition to these objective results, our interviews suggest that receiving adequate social support might be as important to patients as recovering independence.

Stroke in under-75-year-olds: expectations, concerns and needs.

UNLABELLED: Most studies of functional outcomes in hemiplegic stroke patients use standard disability rating scales (such as the Barthel Index). However, planning the allocation of assistance and resources requires additional information about these patients' expectations and needs. AIMS OF THE STUDY: To assess functional independence in daily living and house holding, changes in home settings, type of technical aid and human helps, and expectations in hemiplegic patients 1 to 2 years after the stroke. METHODS: Sixty-one out of 94 patients admitted to the neurovascular unit of French university hospital for a first-ever documented stroke were consecutively enrolled. The study was restricted to patients under 75, since patients over 75 do not follow the same care network. Patients were examined at their homes or interviewed by phone 17 months (on average) after the stroke. Standard functional assessment tools (such as the Barthel Index and the instrumental activities of daily living [IADL] score) were recorded, along with descriptions of home settings and instrumental and human help. Lastly, patients and caregivers were asked to state their expectations and needs. RESULTS: Although only one person was living in a nursing home after the stroke, 23 (34%) of the other interviewees had needed to make home adjustments or move home. Seven patients (11%) were dependent in terms of the activities of daily living (a Barthel Index below 60) and 11 (18%) had difficulty in maintaining domestic activities and community living (an IADL score over 10). Although the remaining patients had made a good functional recovery, 23 were using technical aids and 28 needed family or caregiver assistance, including 23 patients with full functional independence scores. Twenty-five patients (42%) were suffering from depression as defined by the diagnosis and statistical manual of mental disorders (4th edition, text revision, DSM IV-R). The patients' prime concerns were related to recovery of independence, leisure activities and financial resources. Family members' expectations related to the complexity of administrative matters, lack of information and the delay in service delivery. DISCUSSION AND CONCLUSION: In under-75 hemiplegic stroke patients, high scores on standard disability rating scales do not always mean that no help is required.

Electrical stimulation and muscle strengthening.

OBJECTIVES: To identify the effects of application methods and indications of direct muscle electrostimulation on strength gain. METHODS: Literature review and analysis of articles from Medline database with the following entries: muscular or neuromuscular, electromyostimulation, electrical stimulation, strengthening, strength training, immobilization, muscle dystrophy, bed-rest, bed-bound, knee or hip surgery, postoperative phase, cachexia, sarcopenia, and their French equivalent. RESULTS: Because of its specific muscle recruitment order, different from that of voluntary contraction, direct muscle electrostimulation is theoretically a complementary tool for muscle strengthening. It can be used in healthy subjects and in several affections associated with muscle function loss. Its interest seems well-established for post-traumatic or postsurgery lower-limb immobilizations but too few controlled studies have clearly shown the overall benefits of its application in other indications. Whatever the indication, superimposed or combined electrostimulation techniques are generally more efficient than electrostimulation alone. CONCLUSION: Even though widely used, the level of evidence for the efficiency of electromyostimulation is still low. For strength gains, it yielded no higher benefits than traditional strengthening methods. Its interest should be tested in medical affections leading to major muscle deconditioning or in sarcopenia.

A randomized controlled trial on early physiotherapy intervention versus usual care in acute care unit for elderly: potential benefits in light of dietary intakes.

OBJECTIVE: To evaluate effects of early intensive physiotherapy during acute illness on post hospitalization activity daily living autonomy (ADL). DESIGN: Prospective randomized controlled trial of intensive physiotherapy rehabilitation on day 1 to 2 after admission until clinical stability or usual care. SETTING: acute care geriatric medicine ward. PATIENTS: A total of 76 acutely ill patients, acutely bedridden or with reduced mobility but who were autonomous for mobility within the previous 3 months. Patients in palliative care or with limiting mobility pathology were excluded. Mean age was 85.4 (SD 6.6) years. MEASUREMENTS: At admission, at clinical stability and one month later: anthropometry, energy and protein intakes, hand grip strength, ADL scores, and baseline inflammatory parameters. An exploratory principal axis analysis was performed on the baseline characteristics and general linear models were used to explore the course of ADL and nutritional variables. RESULTS: A 4-factor solution was found explaining 71.7% of variance with a factor "nutrition", a factor "function" (18.8% of variance) for ADL, handgrip strength, bedridden state, energy and protein intakes, serum albumin and C-reactive protein concentrations; a factor "strength" and a fourth factor . During follow-up, dietary intakes, handgrip strength, and ADL scores improved but no changes occurred for anthropometric variables. Intervention was associated only with an increase in protein intake. Better improvement in ADL was found in intervention group when model was adjusted on "function" factor items. CONCLUSION: Physical intervention programs should be proposed according to nutritional intakes with the aim of preventing illness induced disability.

Assessment of agonist-antagonist shoulder torque ratios in individuals with paraplegia: a new interpretative approach.

STUDY DESIGN: Cross-sectional study. OBJECTIVE: To evaluate isokinetic shoulder flexor-extensor (F/E) and abductor-adductor (Ab/Ad) torque ratios in individuals with paraplegia using a new interpretative approach. We proposed to study torque ratios according to joint angle sections (15 degrees angle subgroups) over a selected range of motion. SETTING: Pathokinesiology Laboratory, Montreal, Canada. METHOD: Sixteen individuals with complete motor paraplegia, without shoulder pain or impairment, were included in this study. After a preloading period of 1 s, maximum isokinetic concentric contractions of all muscle groups were completed at 30, 60 and 120 degrees s(-1) over the entire tested ranges of motion (70 to -35 degrees for the flexion-extension and 15 to 60 degrees for the abduction-adduction). After the continuous torque curves were rebuilt, the mean F/E and Ab/Ad torque ratios were calculated and analyzed every 15 degrees. RESULTS: A significant modification of the F/E (F=66.3; P<0.001) and Ab/Ad (F=100.6; P<0.001) torque ratios was observed according to the 15 degrees angle subgroup evaluated. More precisely, a progressive decline of both the F/E and Ab/Ad ratios was noted as the shoulder flexion or abduction progressed. Angular velocity did not have any influence on torque ratio values. CONCLUSION: Angle subgroup torque ratio analysis leads to a better estimation of the balance between the agonist and antagonist muscle groups than does traditional peak torque ratio analysis. In individuals with paraplegia, this precise estimation of torque ratios may lead to the development of specific shoulder strengthening programs to prevent muscle imbalance and its consequences.

Kinematic and electromyographic analysis of rising from a chair during a "Sit-to-Walk" task in elderly subjects: role of strength.

BACKGROUND: With aging, the deterioration of the ability to rise from a chair constitutes a major source of disability and a factor contributing to the loss of autonomy. The aim of this study was to describe kinematic and electromyographic characteristics of rising from a chair during a Sit-to-Walk task and to investigate the relationships between lower limb muscle strength and Sit-to-Walk characteristics. METHODS: Twenty-four healthy elderly subjects (mean age: 73.8 (6.4) years) were included. The task analyzed consisted in standing up and taking a step. Kinematic data were obtained using a 3D motion analysis software. Surface electromyography of eight lower limb muscles was recorded. Isokinetic strength of ankle plantar flexor and knee flexors and extensors was evaluated. FINDINGS: The Sit-to-Walk was divided into four phases. For 19 subjects, this task can be considered as a continuum with an overlap of the phases. In comparison with the Sit-to-Stand description, the Sit-to-Walk transition phase, which combined trunk flexion and knee extension, appeared longer in order to increase the body forward transfer for gait initiation. In most cases, the tibialis anterior and peroneus longus muscles were first activated. The isokinetic strength of the knee extensors was negatively correlated with the amplitude of trunk flexion and the knee flexors/extensors torque ratio was correlated with the length of this phase. INTERPRETATION: Characterization of Sit-to-Walk movement provides information about the ability to rise from a chair. In the elderly, a better knowledge of its determinants could lead to improve strategies for rehabilitation of this critical task.