Mobility Limitation Clinical Trial
Official title:
Does Dosage Matter: A Randomized Controlled Trial of ride-on Car Training With a Standing Posture to Enhance Social-mobility Function and Motivation in Toddlers With Motor Disabilities
Modified ride-on toy cars (ROCs) have been viewed as one Maker Movement and become an innovative, alternative option to enhance independent mobility and socialization in young children with disabilities in the recent years. To increase the applicability of this novel intervention, this study proposes a modified ROC-training program with a less-intensive dose which may be an effective and a more feasible protocol for clinical therapists and caregivers to implement. The three purposes of this study are: 1) to compare the effectiveness of different dosages of ROC training with a standing posture on social-mobility function, mastery motivation and physical activity in toddlers with motor disabilities; 2) to determine the optimal dosage of ROC training with a standing posture that is needed to enhance social-mobility function, mastery motivation and physical activity in toddlers with motor disabilities; and 3) to examine the effects of different dosages of ROC training with a standing posture on the ICF functioning levels, family perceptions and participation. Based on the power analysis from the preliminary results of our RCT study, the investigator will recruit 45 children with disabilities who are between 1 to 3 years old and diagnosed as motor delay. They will be randomly assigned to one of the following three groups: a 48-hour ROC training program with a standing posture (ROC-48) (n=15), a 24-hour ROC training program with a standing posture (ROC-24) (n=15), and a regular therapy program without additional training (n=15). The whole study duration will be 24 weeks, including 12-week intervention and 12-week follow-up. The ROC-48 and ROC-24 programs will include 2 sessions/per week, each session for 1 hour (ROC-24) or 2 hours (ROC-48) training. All participants will continue their regular therapy during the whole study. Standardized assessments are provided for a total three times, including the time before and after the intervention and in the end of the follow-up phase. Assessments include social mobility, mastery motivation, behavioral coding, body function, family perception and participation. The use of modified toy cars with different dosages will provide the family and therapists a set of novel, alternative ways to increase family participation and facilitate development in toddlers with disabilities, depending on children's and family's needs.
There is increasing evidence of early power mobility training in recent years, which focuses on the outcomes of motivation and socialization by using standardized measurements, including the Dimensions of Mastery Questionnaire (DMQ), the pediatric evaluation of disability inventory (PEDI) and its' computer adaptive test. These studies showed the use of PMDs might increase the child's independent mobility and motivation to master interpersonal tasks and result in positive changes on psychosocial functioning. Previous studies have determined the feasibility of using a modified ride-on car (ROC) as an alternative, novel option for early mobility training to improve independent mobility and socialization in children aged younger than 3 years. Of note is that this technology-focused do-it-yourself (DIY) movement has provided concrete solutions for children with disabilities, which emphasizes "learning by doing" and is called "the Maker Movement". Awori and Lee has viewed the process of modifying the ROCs and applying relevant training as one Maker Movement. Due to the participatory model of innovation, there are over 60 workshops worldwide that have built approximately 5000 ride-on toy cars. In addition to this universal trend of hands-on practice for health innovation, the use of ROCs may result in the significant improvements in motivation and physical activity in young children with motor disabilities. Kenyon and colleagues reported that pediatric occupational therapists and physical therapists in Canada and the USA recognized the potential benefits of applying power mobility training in young children who have mobility impairments. In addition, almost all therapists agreed or strongly agreed that time and practice were equally as important as a child's abilities when applying power mobility training. However, 69% of these therapists never or seldom provided these types of experiences to children in their practice. The amount and type of practice may play an important role while making the clinical decision. Based on the increased evidence for children with motor disabilities in the past 10-15 years, researchers have suggested that the type of treatment may matter less than the amount of treatment (dosage). The idea of providing an intervention at an amount of greater than standard care has generally been conceptualized with the terms "intensity or intensive treatment". Up to now, several ROC studies have suggested intensive dose of therapy may be effective on improving social-mobility function and mastery motivation. Although the participants were able to complete the 12-week training, the caregivers felt it may be difficult to implement such program in their clinical settings. Our previous pilot results have shown that 85% of the caregivers preferred a 1-hr program than a 2-hr program due to the family resources and geographical concerns. The current ROC training program typically involves long length (9-12 weeks), high frequency (2 sessions per week) and duration (2 hours per session). However, the high frequency and duration may not be a feasible protocol for therapists and caregivers. In addition, there is no study comparing the same type of ROC training at contrasting doses and therefore could not address the relative effectiveness of different doses of therapy. A further study with the comparison of different doses of training may help to determine the optimal program for enhancing social-mobility and psychosocial functions in toddlers with motor disabilities. It is important to consider the clients' needs and incorporate the suggestions into the training protocol based on the evidence. To integrate the caregivers' feedback and increase the applicability of the ROC training program, the investigator further propose a modified program of using the ROC with less-intensive doses, i.e., a 1 hour session of 30-to-35-minute standing-driving for exploration and 25-minute natural play for exploration and skills training. The investigator assume the less-intensive dose of the ROC training will also have positive effects on social-mobility function and other ICF levels due to the sufficient amount of practice suggested by previous evidence (at least 20 to 60 min. moderate to vigorous intensity/per session, 2 sessions/per week). A 3-group comparison design of different doses of ROC training with a standing posture may provide us a complete examination on the topic of dose-response effect on mobility and psychosocial function in toddlers with disabilities. In this study, the investigator will modify the ride-on toy car (standing style) for toddlers with disabilities for the use in the public spaces in the university for 12 weeks based on our previous RCT study. This RCT will compare the improvements of social-mobility function, mastery motivation and physical activity resulting of different dosages for the ROC use with a standing posture. A control group which receives no ROC training and only involves regular therapy will be applied as an active control group. The specific aims of this study are: 1) to compare the effectiveness of different dosages of ROC training with a standing posture on social-mobility function, mastery motivation and physical activity in toddlers with motor disabilities; 2) to determine the optimal dosage of ROC training with a standing posture that is needed to enhance social-mobility function, mastery motivation and physical activity in toddlers with motor disabilities; and 3) to examine the effects of different dosages of ROC training with a standing posture on the ICF functioning levels, family perceptions and participation. Study Design: A randomized, multiple group pretest-posttest control group design will be applied.62 Three groups will be involved in this novel project: the dosage of a 48-hour ROC training program with a standing posture (ROC-48), the dosage of a 24-hour ROC training program with a standing posture (ROC-24), and a regular therapy program without receiving any ROC training (control). The participants will be randomly assigned to one of the 3 groups by using a computer program (Research Randomizer Form www.randomizer.org). The study duration for each participant is 24 weeks, including 12-week intervention and 12-week follow-up. Recruitment: The participants will be recruited from self-referrals, health care practitioners, or the hospitals in Taipei or Taoyuan where toddlers with motor delays are receiving outpatient rehabilitation. The research team will contact the parent/guardian to explain study details and provide them the opportunity to ask questions. Parents will receive a letter detailing the procedure; children of parents/guardians who provide informed consent will participate in the study. Procedure: Before the pre-intervention assessments, the research team will modify the car's seat and acceleration to the hand switch-driven. After modifications, they will receive pre-intervention measurements, including developmental assessments, behavioral videotaping and self-developed questionnaires. These assessments will occur on three occasions: before and after the 12-week intervention (T1 & T2) and the end of the 12-week follow-up phase (T3). During the 12-week intervention, the social-mobility behaviors for the 2 ROC training groups will also be videotaped by the research team for 1 hour during one session/per week at the university. In addition, participants will wear three accelerometers on their wrists and right hip to monitor the minutes of exercise, postural change, activity counts and energy expenditure for exploration during one training session/each week for 12 weeks. An activity log used in the previous studies will also be applied to record the driving and play duration, driving locations, and the caregiver's feedback on the training program every week. Intervention: The research team will ask caregivers to identify goals (before intervention), and measure progress using goal-attainment scaling (GAS) at T1 and T2 time points for the 2 ROC training groups. An independent licensed occupational therapist who will not involve the administration of assessments will provide the intervention with the caregivers. The training principles are similar to those applied in our previous studies of ROC training in various environments. To record the total driving time, locations, and caregivers' feedback regarding training, an activity log will be used for each week. All groups will continue their regular therapy from their own therapists throughout the 24-week duration of the study, including physical therapy, occupational therapy, and speech therapy. The research team do not provide regular therapy during the study. On licensed, independent OT will provide the ROC training programs for the two ROC training groups. The ROC-48 will receive the program in the university for 2 hours/per session, 2 sessions/per week for a total of 12-week intervention. For the ROC-24 group, the participants will have a 30-to-35-minute car play and a 25-minute natural play and the frequency is 2 sessions/per week for a total of 12 weeks. The training programs for the two ROC training groups will be based on the ecological and dynamic systems theory. All the programs will be discussed by the family, the treating therapist and the research team. The program for the control group will only involve their regular therapy provided by their own clinical therapists. Follow-up: This period will involve a 12-week phase following the above treatment programs; during this time no treatment programs will be delivered to the participants except for their own regular therapy. Data Reduction and Analysis: Social-mobility measures will be obtained every week during the intervention phase, including the simultaneous co-occurrence of self-directed locomotion and direct adult interaction, and operationalized as number of minutes observed. All data records will exclude names to provide anonymity of the participant. Two independent coders will code all the videotapes related to social-mobility and mastery motivation performances. In addition, they will determine the physical activity for exploration by combining the data from activity monitors and the videotapes. All the coding criteria of social-mobility and mastery motivation are established based on the previous studies. Descriptive statistics including frequency, means, standard deviations, as well as nonparametric data medians and interquartile ranges will be calculated. Kolmogorov-Smirnov will be used to examine whether the data follows a normal distribution. To compare the baseline characteristics of the 3 groups, one-way ANOVA (for data with normal distribution) and Kruskal-Wallis test (for data with non-normal distribution) will be conducted. If there is a significant difference among the 3 groups, the specific baseline characteristics will be analyzed and further determined as the co-variate for the subsequent analysis, e.g., regular therapy. Data will be analyzed based on an intention-to-treat analysis. A repeated measures analysis of variance (group [3] × time [3]) will be employed to evaluate the treatment effects on the primary and secondary outcomes among the 3 groups at T1, T2, and T3, followed by a post-hoc analysis using Bonferroni test to determine between which groups the differences occur. SPSS 20.0 (SPSS Inc. Chicago, Illinois, USA) will be used for statistical analysis. Significance level will be set at p < 0.05. ;
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