New research from the Federal University of Goiás in Brazil reveals a significant link between cardiovascular fitness and stress response. The study indicates that individuals with lower fitness levels are markedly more susceptible to anxiety and anger when faced with stressors.
Researchers conducted experiments involving 40 healthy adults aged 18 to 40, assessing their reactions to both neutral and unpleasant images. During these sessions, participants viewed distressing content, including scenes of violence and accidents, for approximately 30 minutes. Anxiety and anger levels were measured before and after each viewing using established psychological scales.
Participants’ cardiorespiratory fitness was estimated using predicted VO2max, which factors in self-reported exercise habits alongside age, sex, and body size. The results revealed a stark contrast between those with above-average fitness levels and those with below-average fitness.
In the session involving unpleasant images, individuals in the lower fitness group demonstrated an odds ratio of 8.754 for transitioning from moderate to high anxiety, equating to a 775 percent increase in risk compared to their more fit counterparts. This indicates that lower fitness significantly heightened anxiety levels during emotional stress.
Fitness and Emotional Response
The study also highlighted the correlation between fitness and anger management. Participants with below-average fitness levels exhibited a more pronounced increase in anger after viewing distressing images. Furthermore, the concept of “anger-out,” which refers to the outward expression of anger, showed a negative correlation with higher predicted VO2max. This suggests that better fitness levels may contribute to more stable emotional responses during stressful situations.
Beyond immediate reactions, the study examined the broader implications of fitness on daily anxiety. It found that higher predicted fitness levels correlated with lower trait anxiety overall, reinforcing the idea that regular exercise may serve as a beneficial strategy for emotional regulation.
While the findings are compelling, it is important to note the study’s limitations. The sample size was relatively small, and fitness levels were estimated rather than measured through direct assessments on specialized equipment. Additionally, the stressors used were curated images rather than real-life situations, which may not fully capture the complexities of daily stress.
Nevertheless, the research aligns with a common understanding of the benefits of regular aerobic exercise. As the authors conclude, “Regular physical exercise can be a useful non-pharmacological strategy for anger management.”
For those struggling with stress and anger, the researchers recommend simple activities like brisk walking, cycling, or swimming to enhance fitness levels. These activities do not require drastic changes but can improve emotional resilience over time. Engaging in regular physical activity may not only promote physical health but also fortify the body’s ability to cope with emotional challenges.
