The pandemic of COVID-19 caused significant changes in economies and societies with a major impact on the entire education process. However, these changes did not invalidate a constant effort of adaptation. This cross-sectional, descriptive, and correlational study used an online questionnaire administered to students from various study cycles at higher education institutions in Portugal, with the aim of exploring the influence of literacy and mental health on the use of mental health promotion strategies during COVID-19 confinement. A total of 329 students from higher education institutions participated in this study, mostly from the age group 18-24 years (n = 272; 82.7%) and female (n = 265, 80.5%). The most mentioned health promotion strategies during this period included studying (n = 170; 51.7%); physical activities (n = 151, 45.9%); social networking (n = 124, 37.7%); cooking activities (n = 120, 36.5%); and listening to music (n = 118, 35.9%). Academic success is self-reported, and it is weakly correlated with the MHI5 (r = 0.103, p = 0.063). Students in the pre-graduate programs studied more during the times of the pandemic and used this activity as a mental-health-promoting strategy with a statistically significant difference (p = 0.033). Although it was difficult to improve health literacy related to COVID-19 in such a short period of time, there was a very strong motivation to access, understand, evaluate, communicate, synthesize, and apply information and knowledge to maintain mental health through self-care using health promotion strategies.
Keywords: confinement; health promotion strategies; higher education students; literacy; mental health.