Research Letter: Concussion-Related General Startle Suppression in Adolescent Athletes.

OBJECTIVES: We investigated the acoustic startle reflex in recently concussed adolescent athletes compared to healthy controls and those with concussion history (>1 year prior) but no current symptoms. We hypothesized that individuals with recent concussion would have a suppressed startle response compared to healthy controls. METHODS: We conducted a cross-sectional study on 49 adolescent athletes with a recent concussion (n = 20; age: 14.6 ± 1.6 years; 60% female), a concussion history > 1 year prior (n = 16; age: 14.8 ± 2.0 years; 44% female), and healthy controls (n = 13; age: 13.3 ± 2.8 years; 54% female). We measured the eyeblink of the general startle reflex via electromyography activity of the orbicularis oculi muscle using electrodes placed under the right eye. Measurement sessions included twelve 103 decibel acoustic startle probes ~50 milliseconds in duration delivered ~15-25 seconds apart. The primary dependent variable was mean startle magnitude (µV), and group was the primary independent variable. We used a one-way analysis of variance followed by a Tukey post hoc test to compare mean startle magnitude between groups. RESULTS: Mean startle magnitude significantly differed (F = 5.49, P = .007) among the groups. Mean startle magnitude was significantly suppressed for the concussion (P = .01) and concussion history groups (P = .02) compared to healthy controls. There was no significant difference between the recent concussion and concussion history groups (P = 1.00). CONCLUSION: Our results provide novel evidence for startle suppression in adolescent athletes following concussion. The concussion history group had an attenuated startle response beyond resolution of their recovery, suggesting there may be lingering physiological dysfunction.

Resilience resources, coping, and health outcomes in college students during the Covid-19 pandemic.

Background: Resilience resources are predispositions that promote individuals' abilities to cope with stress. Objective: The current cross-sectional study used path analysis with parallel multiple mediators to test whether coping behaviors mediated associations between resilience resources and somatic, depression, and anxiety symptoms during the Covid-19 pandemic. Method: Undergraduates at a small Northeastern college (n = 193) completed online surveys assessing resilience resources, coping, and symptoms. Results: Results support significant indirect effects from resilience resources to somatic symptoms through positive reinterpretation and growth, mental disengagement, and substance use. Total indirect effects for depressive symptoms were driven by mental disengagement and substance use, with a direct effect of resilience resources. The effect of resilience resources on anxiety symptoms was mediated by mental disengagement, and there was a direct effect of resilience resources. Conclusions: Findings demonstrate that some coping strategies link resilience resources to better outcomes, potentially informing interventions for adaptive coping during public health crises.