Accelerometer-based wireless body area network to estimate intensity of therapy in post-acute rehabilitation

<p>Abstract</p> <p>Background</p> <p>It has been suggested that there is a dose-response relationship between the amount of therapy and functional recovery in post-acute rehabilitation care. To this day, only the total time of therapy has been investigated as a potential determinant of this dose-response relationship because of methodological and measurement challenges. The primary objective of this study was to compare time and motion measures during real life physical therapy with estimates of active time (i.e. the time during which a patient is active physically) obtained with a wireless body area network (WBAN) of 3D accelerometer modules positioned at the hip, wrist and ankle. The secondary objective was to assess the differences in estimates of active time when using a single accelerometer module positioned at the hip.</p> <p>Methods</p> <p>Five patients (77.4 ± 5.2 y) with 4 different admission diagnoses (stroke, lower limb fracture, amputation and immobilization syndrome) were recruited in a post-acute rehabilitation center and observed during their physical therapy sessions throughout their stay. Active time was recorded by a trained observer using a continuous time and motion analysis program running on a Tablet-PC. Two WBAN configurations were used: 1) three accelerometer modules located at the hip, wrist and ankle (M3) and 2) one accelerometer located at the hip (M1). Acceleration signals from the WBANs were synchronized with the observations. Estimates of active time were computed based on the temporal density of the acceleration signals.</p> <p>Results</p> <p>A total of 62 physical therapy sessions were observed. Strong associations were found between WBANs estimates of active time and time and motion measures of active time. For the combined sessions, the intraclass correlation coefficient (ICC) was 0.93 (P ≤ 0.001) for M3 and 0.79 (P ≤ 0.001) for M1. The mean percentage of differences between observation measures and estimates from the WBAN of active time was -8.7% ± 2.0% using data from M3 and -16.4% ± 10.4% using data from M1.</p> <p>Conclusion</p> <p>WBANs estimates of active time compare favorably with results from observation-based time and motion measures. While the investigation on the association between active time and outcomes of rehabilitation needs to be studied in a larger scale study, the use of an accelerometer-based WBAN to measure active time is a promising approach that offers a better overall precision than methods relying on work sampling. Depending on the accuracy needed, the use of a single accelerometer module positioned on the hip may still be an interesting alternative to using multiple modules.</p

Feasibility and effect of in-home physical exercise training delivered via telehealth before bariatric surgery

Abstract : Optimal physical activity (PA) interventions are needed to increase PA in individuals with severe obesity, and optimize the results of bariatric surgery (BS). The aim of this study was to assess the feasibility and effect of in-home Pre-Surgical Exercise Training delivered via telehealth (TelePreSET) in subjects awaiting BS. Six women following the TelePreSET were compared to the women from a previous study (12 performing the PreSET in a gymnasium and 11 receiving usual care). In-home TelePreSET (12-weeks of endurance and strength training) was supervised twice weekly using videoconferencing. Physical fitness, quality of life, exercise beliefs, anthropometric measures, and telehealth perception were assessed before and after 12-weeks. Satisfaction was evaluated with questionnaires at the end of the intervention. The TelePreSET participants attended 96 % of the exercise sessions, and were very satisfied by the TelePreSET. The baseline telehealth perception score was high, and increased significantly after the intervention. The TelePreSET group significantly increased their physical fitness compared to the usual care group. No significant change was noted in other outcomes. The TelePreSET is feasible and seems effective to improve the physical fitness of women awaiting BS. Further studies will confirm beneficial effects of this innovative mode of delivery

Capturing the Cranio-Caudal Signature of a Turn with Inertial Measurement Systems: Methods, Parameters Robustness and Reliability

BACKGROUND: Turning is a challenging mobility task requiring coordination and postural stability. Optimal turning involves a cranio-caudal sequence (i.e., the head initiates the motion, followed by the trunk and the pelvis), which has been shown to be altered in patients with neurodegenerative diseases, such as Parkinson's disease as well as in fallers and frails. Previous studies have suggested that the cranio-caudal sequence exhibits a specific signature corresponding to the adopted turn strategy. Currently, the assessment of cranio-caudal sequence is limited to biomechanical labs which use camera-based systems; however, there is a growing trend to assess human kinematics with wearable sensors, such as attitude and heading reference systems (AHRS), which enable recording of raw inertial signals (acceleration and angular velocity) from which the orientation of the platform is estimated. In order to enhance the comprehension of complex processes, such as turning, signal modeling can be performed. AIM: The current study investigates the use of a kinematic-based model, the sigma-lognormal model, to characterize the turn cranio-caudal signature as assessed with AHRS. METHODS: Sixteen asymptomatic adults (mean age = 69.1 +/- 7.5 years old) performed repeated 10-m Timed-Up-and-Go (TUG) with 180 degrees turns, at varying speed. Head and trunk kinematics were assessed with AHRS positioned on each segments. Relative orientation of the head to the trunk was then computed for each trial and relative angular velocity profile was derived for the turn phase. Peak relative angle (variable) and relative velocity profiles modeled using a sigma-lognormal approach (variables: Neuromuscular command amplitudes and timing parameters) were used to extract and characterize the cranio-caudal signature of each individual during the turn phase. RESULTS: The methodology has shown good ability to reconstruct the cranio-caudal signature (signal-to-noise median of 17.7). All variables were robust to speed variations (p > 0.124). Peak relative angle and commanded amplitudes demonstrated moderate to strong reliability (ICC between 0.640 and 0.808). CONCLUSION: The cranio-caudal signature assessed with the sigma-lognormal model appears to be a promising avenue to assess the efficiency of turns

In-Home Telerehabilitation for Post-Knee Arthroplasty: A Pilot Study

The purpose of this study was to investigate the efficacy of in-home telerehabilitation as an alternative to conventional rehabilitation services following knee arthroplasty. Five community-living elders who had knee arthroplasty were recruited prior to discharge from an acute care hospital. A pre/post-test design without a control group was used for this pilot study. Telerehabilitation sessions (16) were conducted by two trained physiotherapists from a service center to the patient’s home using H264 videoconference CODECs (Tandberg 550 MXP) connected at 512 Kb\s. Disability (range of motion, balance and lower body strength) and function (locomotor performance in walking and functional autonomy) were measured in face-to-face evaluations prior to and at the end of the treatments by a neutral evaluator. The satisfaction of the health care professional and patient was measured by questionnaire. Results are as follows. One participant was lost during follow-up. Clinical outcomes improved for all subjects and improvements were sustained two months post-discharge from in-home telerehabilitation. The satisfaction of the participants with in-home telerehabilitation services was very high. The satisfaction of the health care professionals with the technology and the communication experience during the therapy sessions was similar or slightly lower. In conclusion, telerehabilitation for post-knee arthroplasty is a realistic alternative for dispensing rehabilitation services for patients discharged from an acute care hospital.Keywords: Telerehabilitation, Physical Therapy, Total Knee Arthroplasty, Videoconferencin

Cranio-caudal kinematic turn signature assessed with inertial systems as a marker of mobility deficits in Parkinson's disease

Background: Turning is a challenging mobility task requiring proper planning, coordination, and postural stability to be executed efficiently. Turn deficits can impair mobility and lead to falls in patients with neurodegenerative disease, such as Parkinson's disease (PD). It was previously shown that the cranio-caudal sequence involved during a turn (i.e., motion is initiated by the head, followed by the trunk) exhibits a signature that can be captured using an inertial system and analyzed through the Kinematics Theory. The so-called cranio-caudal kinematic turn signature (CCKS) metrics derived from this approach could, therefore, be a promising avenue to develop and track markers to measure early mobility deficits. Objective: The current study aims at exploring the discriminative validity and sensitivity of CCKS metrics extracted during turning tasks performed by patients with PD. Methods: Thirty-one participants (16 asymptomatic older adults (OA): mean age = 69.1 +/- 7.5 years old; 15 OA diagnosed with early PD ON and OFF medication, mean age = 65.8 +/- 8.4 years old) performed repeated timed up-and-go (TUG) tasks while wearing a portable inertial system. CCKS metrics (maximum head to trunk angle reached and commanded amplitudes of the head to trunk neuromuscular system, estimated from a sigma-lognormal model) were extracted from kinematic data recorded during the turn phase of the TUG tasks. For comparison purposes, common metrics used to analyze the quality of a turn using inertial systems were also calculated over the same trials (i.e., the number of steps required to complete the turn and the turn mean and maximum velocities). Results: All CCKS metrics discriminated between OA and patients (p /= 0.173). Conclusion: The enhanced sensitivity to change of the proposed CCKS metrics suggests a potential use of these metrics for mobility impairments identification and fluctuation assessment, even in the early stages of the disease

Transcranial direct current stimulation (a-tCDS) after subacromial injections in patients with subacromial pain syndrome: a randomized controlled pilot study

Background: Subacromial pain syndrome (SAPS) is a common complaint in orthopaedics. Subacromial corticosteroid injections (CSI) can relieve pain in the short term. Anodal transcranial direct current stimulation (a-tDCS) has been used for symptomatic pain relief in a variety of chronic pain conditions. The aim of this pilot study was to assess whether the application a-tDCS could enhance the symptomatic relief provided by CSI in patients affected by SAPS. Methods: Thirty-eight participants (18 to 65-year-old) suffering from SAPS were recruited to have a CSI and randomly allocated to receive, 1 weeks post CSI, real a-tDCS (r-tDCS), sham tDCS (s-tDCS) or no intervention (Control). Upper limb function was measured 1 week prior to the CSI, at the 2- and 4-week follow-ups using self-administered questionnaires and physical measures. Self-reported pain and activity during each day were logged by the participants using visual analog scales (VAS). Differences between groups were tested using repeated-measures ANOVAs. Results: Pain VAS and the Single Assessment Numeric Evaluation scale (SANE) showed significant improvement from baseline 2 weeks and 4 weeks after CSI in all groups (p < 0.05). There were no significant group X time interaction 2 weeks following tDCS treatment in any of the variables. Conclusion: All groups showed significant improvement in pain VAS and SANE scores following the CSI. One session of a-tDCS treatment 2 weeks following CSI did not result in any additive or potentializing effects when compared to a s-tDCS or a control group

Simulated In-home Teletreatment for Anomia

This pilot study explored the feasibility of in-home teletreatment for patients with post-stroke anomia. Three participants over 65 years of age suffering from post-stroke anomia were treated in this pre/post-intervention case study. They received 12 speech therapy teletreatments (two sessions/week for 6 weeks) aimed at improving confrontation naming skills. Half of the failed items from a set of 120 preselected stimuli were trained during treatment (Block A-trained stimuli) while the other half served as controls (Block B-untrained stimuli). Variables measured were: 1) efficacy of treatment (performance on Block-A vs. Block B Stimuli), and 2) participants’ satisfaction with teletreatment (using a French adaptation of the Telemedicine satisfaction questionnaire). All participants showed clinically relevant improvement on confrontation naming of trained items and less improvement for untrained items. The researchers also obtained high satisfaction scores on the questionnaire (above 57/60). This pilot study supports the feasibility of speech therapy teletreatments applied to neurological language disorders

Aging all over the place : a multidisciplinary framework, that considers place and life trajectories of older adults within their communities

Abstract : Purpose This conceptual paper describes Aging All Over the Place (AAOP), a federative framework for action, research and policy that considers older adults’ diverse experiences of place and life trajectories, along with person-centered care. Design/methodology/approach The framework was developed through group discussions, followed by an appraisal of aging models and validation during workshops with experts, including older adults. Findings Every residential setting and location where older adults go should be considered a ‘place’, flexible and adaptable enough so that aging in place becomes aging all over the place. Healthcare professionals, policymakers and researchers are encouraged to collaborate around four axes: 1) biopsychosocial health and empowerment; 2) welcoming, caring, mobilized, and supportive community; 3) spatiotemporal life and care trajectories; and 4) out-of-home care and services. When consulted, a Seniors Committee showed appreciation for flexible person-centered care, recognition of life transitions and care trajectories, and meaningfulness of the name. Originality Building on the introduction of an ecological experience of aging, AAOP broadens the concept of care as well as the political and research agenda by greater integration of community and clinical actions. AAOP also endeavors to avoid patronizing older adults and engage society in strengthening circles of benevolence surrounding older adults, regardless of their residential setting. AAOP’s applicability is evidenced by existing projects that shared its approach. Social implications Population aging and the pandemic call for intersectoral actions and for stakeholders beyond healthcare to act as community leaders. AAOP proposes opportunities to connect environmental determinants of health and person-centered care

Satisfaction With In-Home Speech Telerehabilitation in Post-Stroke Aphasia: an Exploratory Analysis

Patient satisfaction with healthcare has a major impact on clinical outcomes and compliance. Satisfaction with telehealth services for speech and language problems has been documented but not in post-stroke aphasia. The main objective here was to evaluate patient satisfaction with speech tele rehabilitation based on the PACE pragmatic rehabilitation approach in post-stroke aphasia. This study was embedded in a pre-/post-test feasibility and efficacy study in which 20 patients with chronic post-stroke aphasia received 3 weeks of speech therapy (9 sessions) through in-home tele-rehabilitation. A telerehabilitation platform based on a commercial videoconferencing system (Tandberg 550 MXP) with custom software was used to transmit audio, video and data through a high-speed Internet connection between the participant’s home and the clinician. Participants’ satisfaction with in-home telerehabilitation and healthcare received was assessed using French adaptations of the Telemedicine Satisfaction Questionnaire and Health Care Satisfaction Questionnaire. Satisfaction with functional communication, i.e. communication in common situations of daily life, was compared pre- and post-intervention with participants and caregivers. Participants’ satisfaction with in-home telerehabilitation was excellent (94%±4.3%). Satisfaction with healthcare received was good overall (80%±11.4%) and for three factors measured independently, i.e. relationship with healthcare professional (84%±12.5%), services delivered (73%±13.8%), and general healthcare&nbsp; organization (84%±12.0%). Participants’ and caregivers’ satisfaction with communication was higher after the intervention (p=0.001 and p&lt;0.001, respectively) and was correlated with age (r=-0.60; p=0.007). Patients with post-stroke aphasia receiving speech tele-therapy were very satisfied with this service delivery method. Also, technology use was not an issue for seniors post-stroke