Pediatric Rehabilitation Therapies Differ in Intensity: A Pilot Study to Highlight the Implications for Dose-Response Relationships

Training intensity of robot-assisted gait training in children with cerebral palsy

AIM

We compared three different intensities of robot-assisted gait training (RAGT) for achieving favourable outcomes in children with cerebral palsy (CP).

METHOD

This study was conducted using a randomized controlled, single-blind design. Thirty children (19 males and 11 females; mean age 6 years 1 month, SD 2 years) with CP classified in Gross Motor Function Classification System levels II and III were assigned to three different RAGT intensity groups: high-intensity (fastest walking speed and lowest body weight support [BWS]), low-intensity (slowest speed and highest BWS), and comfortable intensity (intermediate speed and intermediate BWS). The RAGT intervention was performed three times a week for 6 weeks. Outcome measures included the 88-item Gross Motor Function Measure, stability index, spatiotemporal parameters of gait analysis, paediatric functional independence measure, and the Canadian Occupational Performance Measure.

RESULTS

The 88-item Gross Motor Function Measure was significantly improved after training in the high-intensity (D Δ8.3 ± 15.6; E Δ3.8 ± 4.1) and comfortable intensity (D Δ2.9 ± 3.1; E Δ1.2 ± 2.0) groups, whereas gait speed was improved in the comfortable intensity group, without statistically significant group differences. Only the low-intensity group showed improvement on the stability index (Δ -0.6 ± 0.9, p = 0.05). Everyday functional performance significantly improved in all three groups, with the comfortable intensity group showing the greatest improvement.

INTERPRETATION

Different training intensities produced improvement in different areas; individualized RAGT intensity adjustment is therefore needed based on the rehabilitation goal.

Individual and contextual factors influencing children's effort in pediatric rehabilitation interventions

Rehabilitation clinicians strive to encourage children's sustained effort within challenging practice conditions. Effort influences intervention success, yet it is rarely defined or measured. Effort can be conflated with individual factors, such as motivation and engagement, that might influence it. Contextual factors that likely impact children's effort, such as practice conditions and therapeutic interactions, are generally under-described. Defining, describing, and measuring effort and its influencers is necessary to enhance understanding of differences in rehabilitation intervention outcomes across individuals and contexts and to support the development of personalized precision rehabilitation approaches. This narrative review describes effort conceptualization in rehabilitation, particularly in relation to intensity, engagement, and participation nomenclature. The review outlines individual and contextual factors that may influence children's effort in rehabilitation and describes potential next steps for effort description and measurement. Subsequent work should aim to identify factors that can be targeted in clinical practice to promote and sustain children's effort in the rehabilitation process, thereby individualizing interventions and potentially improving their effectiveness. WHAT THIS PAPER ADDS: Effort as it relates to rehabilitation is confusingly described and infrequently measured. Engagement, involvement, intensity, and participation are terms alluding to effort. Child-specific and therapy-specific factors, alone and in combination, may influence children's effort. Clearer conceptualization of effort and the factors that influence it will support personalization of interventions. Better measurement will enhance knowledge about relationships between effort and therapeutic outcomes.

Robot-assisted gait training: more randomized controlled trials are needed! Or maybe not?

I was encouraged by the recent article by Kuo et al. entitled “Prediction of robotic neurorehabilitation functional ambulatory outcome in patients with neurological disorders” to write an opinion piece on the possible further development of stationary robot-assisted gait training research. Randomized clinical trials investigating stationary gait robots have not shown the superiority of these devices over comparable interventions regarding clinical effectiveness, and there are clinical practice guidelines that even recommend against their use. Nevertheless, these devices are still widely used, and our field needs to find ways to apply these devices more effectively. The authors of the article mentioned above feed different machine learning algorithms with patients’ data from the beginning of a robot-assisted gait training intervention using the robot Lokomat. The output of these algorithms allows predictions of the clinical outcome (i.e., functional ambulation categories) while the patients are still participating in the intervention. Such an analysis based on the collection of the device’s data could optimize the application of these devices. The article provides an example of how our field of research could make progress as we advance, and in this opinion piece, I would like to present my view on the prioritization of upcoming research on robot-assisted gait training. Furthermore, I briefly speculate on some drawbacks of randomized clinical trials in the field of robot-assisted gait training and how the quality and thus the effectiveness of robot-assisted gait training could potentially be improved based on the collection and analysis of clinical training data, a better patient selection and by giving greater weight to the motivational aspects for the participants.

Physical rehabilitation interventions in children with acquired brain injury: a scoping review

AIM

To synthesize the evidence about the characteristics (frequency, intensity, time, type) and effects of physical rehabilitation interventions on functional recovery and performance in daily functioning in children and young people with acquired brain injury (ABI), including traumatic brain injuries (TBI) and non-TBI, during the subacute rehabilitation phase.

METHOD

Using scoping review methodology, a systematic literature search was performed using four databases. Articles were screened by title and abstract and data from eligible studies were extracted for synthesis.

RESULTS

Nine of 3009 studies were included. The results demonstrated a variety of intervention characteristics: frequency varied between 1 and 7 days per week; time of intervention varied between 25 minutes and 6 hours a day; intervention types were specified in seven studies; and none of the included studies reported details of intensity of intervention. All studies reported positive results on the International Classification of Functioning, Disability and Health: Children and Youth (ICF-CY) levels of body function and activities after the intervention period, with study designs of included studies being cohort studies without concurrent controls (n=7) or case reports (n=2).

INTERPRETATION

Inconsistency in results hampers generalizability to guide clinical practice. Physical interventions during subacute rehabilitation have potential to improve functional recovery with intervention characteristics as an important factor influencing its effectiveness. Future well-designed studies are indicated to gain knowledge and optimize rehabilitation practice in paediatric ABI and high-quality research including outcomes across all ICF-CY domains is needed.