Adaptability to Balance Perturbations During Walking as a Potential Marker of Falls History in Older Adults

Given that falls most commonly occur during walking due to unexpected balance perturbations like trips and slips, walking-based balance assessment including walking stability and adaptability to such perturbations could be beneficial for fall risk assessment in older adults. This cross-sectional study reanalyzed data from two larger studies conducted with the same walking protocol. Participants completed unperturbed walking trials at speeds of 0.4 m/s up to 1.8 m/s in 0.2 m/s steps. Ten unannounced treadmill belt acceleration perturbations were then applied while participants walked at equivalent stability, assessed using the margins of stability. Retrospective (12 months) falls incidence was collected to divide participants into people with and without a history of falls. Twenty older adults (mean age 70.2 ± 2.9 years) were included in this analysis; eight people with one or more recent falls and 12 people without, closely matched by sex, age and height. No significant differences were found in unperturbed walking parameters or their variability. Overall perturbation-recovery step behavior differed slightly (not statistically significant) between the groups after the first perturbation and differences became more pronounced and significant after repetition of perturbations. The No-Falls group significantly reduced the number of recovery steps needed across the trials, whereas the Falls group did not show these improvements. People with a previous fall tended to have slightly delayed and more variable recovery responses after perturbation compared to non-fallers. Non-fallers demonstrate more signs of adaptability to repeated perturbations. Adaptability may give a broader indication of the ability of the locomotor system to respond and improve responses to sudden walking perturbations than unperturbed walking variability or recovery to a single novel perturbation. Adaptability may thus be a more useful marker of falls history in older adults and should be considered in further research

Perturbation-based balance training to improve balance control and reduce falls in older adults - study protocol for a randomized controlled trial

BackgroundFalls are a common cause of injuries and hospitalization among older adults. While conventional balance training appears effective in preventing falls, a relatively large number of training sessions are needed and retention of the effects after the training period is hard to accomplish. This may be because these interventions are not sufficiently task-specific for the mechanism of falls. Many falls in older adults occur due to unexpected external perturbations during gait, such as trips. Therefore, there is increasing interest in perturbation-based balance training (PBT), which is a more task-specific intervention to improve reactive balance control after unexpected perturbations. The literature suggests that PBT may be more effective and require fewer training sessions to reduce falls incidence in older adults, than conventional balance training. We aim to evaluate the effect of a three-session PBT protocol on balance control, daily life falls and fear of falling. Secondly, we will evaluate the acceptability of the PBT protocol.MethodsThis is a mixed-methods study combining a single-blind (outcome assessor) randomized controlled trial (RCT) using a parallel-group design, and qualitative research evaluating the acceptability of the intervention. The study sample consists of community-dwelling older adults aged 65years and older who have recently fallen and visited the MUMC+ outpatient clinic. Subjects are randomized into two groups. The control group (n =40) receives usual care, meaning referral to a physical therapist. The intervention group (n =40) receives usual care plus three 30-min sessions of PBT in the Computer Assisted Rehabilitation Environment. Subjects' balance control (Mini-BESTest) and fear of falling (FES-I) will be assessed at baseline, and 4weeks and 3months post-baseline. Daily life falls will be recorded with falls calendars until 6months after the first follow-up measurement, long-term injurious falls will be recorded at 2-years' follow-up via the electronic patient record. Acceptability of the PBT protocol will be evaluated with semi-structured interviews in a subsample from the intervention group.DiscussionThis study will contribute to the evidence for the effectiveness of PBT using a training protocol based on the available literature, and also give much needed insights into the acceptability of PBT for older adults.Trial registrationNederlands Trial Register NL7680. Registered 17-04-2019 - retrospectively registered

Evaluation of primary allied healthcare in patients recovering from COVID-19: first results after six months follow-up in a Dutch nationwide prospective cohort study.

This article is a preprint and has not been peer-reviewed. It reports new medical research that has yet to be evaluated and so should not be used to guide clinical practice. Objectives To report the recovery of patients receiving primary allied healthcare after a COVID-19 infection at a six-month follow-up, and to explore which patient characteristics are associated with the changes in outcomes between the baseline and six-month follow-up. Design Prospective cohort study. Setting Allied healthcare in Dutch primary care. Participants 1,452 adult patients recovering from COVID-19 and receiving treatment from one or more primary care allied health professional(s) (i.e., dietitian, exercise therapist, occupational therapist, physical therapist and/or speech and language therapist). Results For participation (USER-P range 0 to 100), estimated mean differences of at least 2.3 points were observed after six months. For HRQoL (EQ-VAS range 0 to 100), the mean increase was 12.31 at six months. Furthermore, significant improvements were found for fatigue (FSS range 1 to 7): the mean decrease was –0.7 at six months. For physical functioning (PROMIS-PF range 13.8 to 61.3), the mean increase was 5.9 at six months. Mean differences of –0.8 for anxiety (HADS range 0 to 21), and –1.5 for depression (HADS range 0 to 21), were found after six months. Having a worse baseline score, hospital admission and male sex were associated with greater improvement between the baseline and six-month follow-up, whereas age, BMI, comorbidities and smoking status were not associated with mean changes in any outcome measure. Conclusions Patients recovering from COVID-19 who receive primary allied healthcare make progress in recovery, but still experience many limitations in their daily activities after six months. Our findings provide reference values to healthcare providers and healthcare policy-makers regarding what to expect from the recovery of patients who received health care from one or more primary care allied health professionals

Evaluation of Allied Healthcare in Patients Recovering from Covid-19: Study Protocol and Baseline Data of a National Prospective Cohort Study.

OBJECTIVE: To report the study protocol and baseline characteristics of a prospective cohort study to evaluate longitudinal recovery trajectories of patients recovering from COVID-19 who have visited a primary care allied health professional. DESIGN: Prospective cohort study with a mixed-methods approach. PATIENTS: Patients recovering from COVID-19 treated by primary care dietitians, exercise therapists, occupational therapists, physical therapists and/or speech and language therapists in the Netherlands. METHODS: The prospective study will measure primary outcome domains: participation, health-related quality of life, fatigue, physical functioning, and costs, at baseline, 3, 6, 9 and 12 months. Interviews, on the patients' experiences with allied healthcare, will be held with a subsample of patients and allied health professionals. RESULTS: The cohort comprises 1,451 patients (57% female, mean age 49 (standard deviation 13) years). Preliminary results for the study cohort show that 974 (67%) of the participants reported mild/moderate severity symptoms during the infection period and patients reported severe complaints in activities of daily living compared with previous research in other patient populations. Both quantitative and qualitative, will provide insight into the recovery of patients who are treated by allied health professionals. CONCLUSION: This preliminary report describes how the prospective study aims to longitudinally evaluate the recovery trajectories and related costs of patients recovering from COVID-19 who are treated by 1 or more allied health professionals in the Netherlands. In addition, baseline data of patients in the cohort are presented

Evaluation of Allied Healthcare in Patients Recovering from Covid-19: Study Protocol and Baseline Data of s National Prospective Cohort Study

OBJECTIVE: To report the study protocol and baseline characteristics of a prospective cohort study to evaluate longitudinal recovery trajectories of patients recovering from COVID-19 who have visited a primary care allied health professional. DESIGN: Report of the protocol and baseline characteristics for a prospective cohort study with a mixed-methods approach. PATIENTS: Patients recovering from COVID-19 treated by primary care dietitians, exercise therapists, occupational therapists, physical therapists and/or speech and language therapists in the Netherlands. METHODS: The prospective study will measure primary outcome domains: participation, health-related quality of life, fatigue, physical functioning, and costs, at baseline, 3, 6, 9 and 12 months. Interviews, on the patients' experiences with allied healthcare, will be held with a subsample of patients and allied health professionals. RESULTS: The cohort comprises 1,451 patients (57% female, mean age 49 (standard deviation 13) years). Preliminary results for the study cohort show that 974 (67%) of the participants reported mild/moderate severity symptoms during the infection period and patients reported severe restrictions in activities of daily living compared with previous research in other patient populations. Both quantitative and qualitative, will provide insight into the recovery of patients who are treated by allied health professionals. CONCLUSION: In conclusion, this will be the first comprehensive study to longitudinally evaluate the recovery trajectories and related costs of patients recovering from COVID-19 who are treated by allied health professionals in the Netherlands. This study will provide evidence for the optimal strategy to treat patients recovering from COVID-19 infection, including which patients benefit, and to what extent, from treatment, and which factors might impact their recovery course over time. The preliminary results of this study demonstrated the severity of restrictions and complaints at the start of therapy are substantial

Clinical outcomes of uninterrupted embryo culture with or without time-lapse-based embryo selection versus interrupted standard culture (SelecTIMO): a three-armed, multicentre, double-blind, randomised controlled trial.

BACKGROUND: Time-lapse monitoring is increasingly used in fertility laboratories to culture and select embryos for transfer. This method is offered to couples with the promise of improving pregnancy chances, even though there is currently insufficient evidence for superior clinical results. We aimed to evaluate whether a potential improvement by time-lapse monitoring is caused by the time-lapse-based embryo selection method itself or the uninterrupted culture environment that is part of the system. METHODS: In this three-armed, multicentre, double-blind, randomised controlled trial, couples undergoing in-vitro fertilisation or intracytoplasmic sperm injection were recruited from 15 fertility clinics in the Netherlands and randomly assigned using a web-based, computerised randomisation service to one of three groups. Couples and physicians were masked to treatment group, but embryologists and laboratory technicians could not be. The time-lapse early embryo viability assessment (EEVA; TLE) group received embryo selection based on the EEVA time-lapse selection method and uninterrupted culture. The time-lapse routine (TLR) group received routine embryo selection and uninterrupted culture. The control group received routine embryo selection and interrupted culture. The co-primary endpoints were the cumulative ongoing pregnancy rate within 12 months in all women and the ongoing pregnancy rate after fresh single embryo transfer in a good prognosis population. Analysis was by intention to treat. This trial is registered on the ICTRP Search Portal, NTR5423, and is closed to new participants. FINDINGS: 1731 couples were randomly assigned between June 15, 2017, and March 31, 2020 (577 to the TLE group, 579 to the TLR group, and 575 to the control group). The 12-month cumulative ongoing pregnancy rate did not differ significantly between the three groups: 50·8% (293 of 577) in the TLE group, 50·9% (295 of 579) in the TLR group, and 49·4% (284 of 575) in the control group (p=0·85). The ongoing pregnancy rates after fresh single embryo transfer in a good prognosis population were 38·2% (125 of 327) in the TLE group, 36·8% (119 of 323) in the TLR group, and 37·8% (123 of 325) in the control group (p=0·90). Ten serious adverse events were reported (five TLE, four TLR, and one in the control group), which were not related to study procedures. INTERPRETATION: Neither time-lapse-based embryo selection using the EEVA test nor uninterrupted culture conditions in a time-lapse incubator improved clinical outcomes compared with routine methods. Widespread application of time-lapse monitoring for fertility treatments with the promise of improved results should be questioned. FUNDING: Health Care Efficiency Research programme from Netherlands Organisation for Health Research and Development and Merck