Internet addiction is a growing concern in today's society, particularly among college students who often spend long hours online for academic or personal reasons. Studies have shown that excessive internet use can lead to negative effects such as poor sleep quality, harmful mood, and reduced heart rate variability. However, a recent clinical trial has demonstrated that physical exercise may be an effective way to combat these negative effects.
The study involved 46 college students with Internet addiction, who were randomly assigned to either the Internet addiction group (IA) or the Internet addiction exercise group (IA+EX). The IA+EX group underwent physical exercise for 12 weeks, three times per week, while the IA group did not perform any regular physical exercise during the experiment.
The results of the study were very promising. After the 12-week exercise program, the IA+EX group showed a significant decrease in the degree of Internet addiction, depression, and sleep problems, as measured by the Young's Internet Addiction Test (IAT) scale, Center for Epidemiologic Studies Depression (CES-D) scale, and Pittsburgh Sleep Quality Index (PSQI). In comparison, the IA group did not show any significant changes in these measures.
Furthermore, the IA+EX group also showed an improvement in heart rate variability (HRV), with a decrease in LFn (low-frequency component of heart rate variability) and the ratio of LF/HF (LF/HF stands for the ratio between the low-frequency and high-frequency components of heart rate variability (HRV). It is a measure used to assess the balance between the sympathetic and parasympathetic nervous systems), and an increase in HFn (high-frequency component of heart rate variability). These changes indicate a balance between the sympathetic and parasympathetic functions of the autonomic nervous system, which can be disrupted by excessive internet use.