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Objectives: Adults with spinal cord injury (SCI) are often sedentary, increasing their risk of cardiometabolic diseases. Leisure-time Physical Activity (LTPA) is physical activity completed during recreation time for enjoyment. We aimed to quantify LTPA in people ≥45 years with SCI and to explore its relationship with participants' characteristics. Methods: This is a secondary analysis on a subset of the Australian International SCI Survey in participants ≥45 years, at least 12 months post-injury. We described levels of LTPA and used multivariable regressions to estimate the associations between participant characteristics and LTPA. Results: Of 1,281 participants (mean age: 62.7 years, mean time since injury: 18.7 years; 74% males) 44% reported no participation in LTPA. The average LTPA participation was 197 (SD 352) minutes per week (median: 50). Females (β = -62.3, 95% CI [-112.9, -11.7]), and participants with non-traumatic injuries (β = -105.2, 95% CI [-165.9, -44.6]) performed less LTPA. Time since injury was not associated with moderate-to-heavy LTPA (LR: Probability > F = 0.785). Conclusion: LTPA promotion in the SCI population ≥45 years focusing on females and non-traumatic injuries is warranted. [ABSTRACT FROM AUTHOR]

Emerging technologies such as robotics and virtual reality (VR) are being trialled and implemented into physiotherapy practice. As emerging technologies compete for market share, trials on emerging technologies are at risk of spin. For consumers to make informed decisions about whether to use a new technology, trials should accurately portray the results. If spin is present, outcomes may not be comparable to the results reported when interventions are implemented clinically. To determine the amount and type of spin in abstracts of physiotherapy clinical trials that use robotic or VR interventions. A secondary objective is to determine the agreement between raters, both experienced and inexperienced, using an existing 7-item checklist with updated item definitions. We will perform two meta-research reviews on a random set of 100 robotics (study 1) and 100 VR (study 2) trials, from any year, indexed in the PEDro database. Using the updated spin checklist, the abstract of each trial will be assessed in corroboration with full-text. The total spin score and proportion of studies with spin for each item will be reported. Agreement between experienced and inexperienced raters will be determined using kappa statistics. Rater confidence in rating each item will be collected. We will identify if spin is present in robotics and VR literature and evaluate if the spin checklist can be confidently and consistently used by raters. We hope this research will facilitate best-practice reporting of research findings so emerging technologies will be implemented with realistic expectation of clinical outcome. [ABSTRACT FROM AUTHOR]

The aim was to challenge the assumptions of standard statistical analyses of average surface electromyography (sEMG) data as a measurement of response magnitudes following the generation of a reflex. The ipsilateral tibial nerve was stimulated at three stimulation intensities and the response sEMG was measured in the contralateral soleus (cSOL) muscle. The magnitude of the cSOL response was measured at a set time window following ipsilateral tibial nerve stimulation. The averaged and trial-by-trial response magnitudes were assessed and compared. The analysis of the averaged and trial-by-trial response revealed significantly different results as the trial-by trial response magnitudes were log-normally distributed with between subject variance heterogeneity violating assumptions of standard statistical analyses. A statistical model has been suggested for the analysis of the responses. By ignoring trial-by-trial response variability and distribution, erroneous results may occur. This may change the interpretation of the results in some studies. [ABSTRACT FROM AUTHOR]

The aim was to investigate trial-by-trial response characteristics in the short-latency stretch reflex (SSR). Fourteen dorsiflexion stretches were applied to the ankle joint with a pre-contracted soleus muscle on two days. The magnitude and variability of trial-by-trial responses of the SSR were assessed. The SSR was log-normally distributed and variance heterogeneous between subjects. For some subjects, the magnitude and variance differed between days and stretches. As velocity increased, variance heterogeneity tended to decrease and response magnitude increased. The current study demonstrates the need to assess trial-by-trial response characteristics and not averaged curves. Moreover, it provides an analysis of SSR characteristics accounting for log-normally distributed and variance heterogeneous trial-by-trial responses.