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Objectives: 1) To determine which characteristics of adolescent athletes with SRC are associated with 'early' versus 'late' presentation for multimodal treatment; 2) to build a propensity score to investigate the effects of treatment timing during the management of SRCs. Methods: Associations between early (0-7 days) versus late (8-28 days) presentation for treatment and pre-specified sociodemographic, pre-injury and injury characteristics were investigated in a historical cohort study of 2949 multi-sport athletes across Canada aged 12-18 years diagnosed with a SRC in community-based healthcare clinics. Results: Early presentation was associated with being male, completing a pre-injury baseline assessment, and responding 'yes' or 'no' to having a diagnosed learning disability. Older athletes who reported previous SRCs were less likely to present early. The propensity score demonstrated an area under the curve of 0.71 (95% CI, 0.69 to 0.73). Conclusions: Male athletes with a completed baseline assessment were more likely to seek early treatment following a SRC, and older athletes who reported a greater number of previous SRCs were less likely to present early. External validation of the propensity score is needed before examining the impact of treatment timing on adolescent athlete recovery outcomes. [ABSTRACT FROM AUTHOR]

This case series describes the multi-modal treatment plans delivered by two chiropractic sports specialists for the management of post-concussive symptoms (PCS). Three concussion cases are presented each with different mechanisms of injury (two sportrelated and one non-sport-related) and each within a different stage of recovery (acute, sub-acute, and chronic). Treatment plans included patient education, sub-symptom threshold exercise, soft-tissue therapy, spinal manipulation, and cervical spine as well as visual/vestibular rehabilitation exercises. This series highlights three important observations: (1) the efficacy of individualized, multi-modal treatment plans based on suggested clinical profiles for patients with PCS of various stages; (2) that the delineation of concussion literature based on mechanism of injury (i.e. sport- vs. non-sport-related) may be unnecessary; and (3) these cases provide encouraging evidence to support the inclusion of manual therapists with advanced knowledge of concussion treatment, such as chiropractors, as part of the interdisciplinary healthcare team when managing patients with PCS. [ABSTRACT FROM AUTHOR]

Introduction: The therapeutic effects of local muscle vibration (LMV) remain controversial due to a lack of specific protocols. This review was conducted to better understand the effects of various LMV application protocols. Methods: A comprehensive literature search was performed based on title and abstract and a set of predetermined inclusion criteria. Study quality was then evaluated via the PEDro scale. Results: 23 articles were returned initially, and 21 studies were evaluated. The average PEDro score was 5.97/10. Reported outcome measures included muscle activation, strength, power, and range of motion / flexibility. The frequency and amplitude of LMV ranged from 5 - 300 Hz and 0.12 -12 mm respectively, and duration from 6 seconds - 30 minutes. Conclusion: Most studies found that LMV elicits beneficial changes in the mentioned outcome measures. However, the methodological procedures used are quite heterogeneous. Further research is needed to understand the optimal application of LMV. [ABSTRACT FROM AUTHOR]

This case series describes the multi-modal treatment plans delivered by two chiropractic sports specialists for the management of post-concussive symptoms (PCS). Three concussion cases are presented each with different mechanisms of injury (two sportrelated and one non-sport-related) and each within a different stage of recovery (acute, sub-acute, and chronic). Treatment plans included patient education, sub-symptom threshold exercise, soft-tissue therapy, spinal manipulation, and cervical spine as well as visual/vestibular rehabilitation exercises. This series highlights three important observations: (1) the efficacy of individualized, multi-modal treatment plans based on suggested clinical profiles for patients with PCS of various stages; (2) that the delineation of concussion literature based on mechanism of injury (i.e. sport- vs. non-sport-related) may be unnecessary; and (3) these cases provide encouraging evidence to support the inclusion of manual therapists with advanced knowledge of concussion treatment, such as chiropractors, as part of the interdisciplinary healthcare team when managing patients with PCS., Competing Interests: The authors have no disclaimers, competing interests, or sources of support or funding to report in the preparation of this manuscript., (© JCCA 2020.)