A workout regimen created by Japanese scientists in 2007 has recently gained new popularity on TikTok, where it is being marketed as a fun, accessible, and effective method to enhance heart health, muscle strength, and stamina.
Also referred to as "Japanese walking," this technique is very straightforward: switching between three minutes of quick walking and three minutes of a more leisurely pace, done repeatedly for a total of 30 minutes.
It was initially presented in a2007 studyled by Hiroshi Nose and Shizue Masuki, faculty members at Shinshu University. Scientists randomly divided 246 elderly individuals into three categories: no walking, moderate-intensity continuous walking, and high-intensity interval walking.
The findings were surprising. Individuals who participated in the interval walking program over five months showed more significant improvements in leg strength and general physical condition, along with a more substantial decrease in blood pressure, when compared to those who only engaged in moderate-paced walking.
Further investigation has built upon the initial 2007 results. Afollow-up studyA study with over 700 participants revealed that interval walking also helped alleviate symptoms of age and lifestyle-related issues, such as improvements in mental function, depression, and sleep.
Now, almost two decades later, the approach is gaining renewed interest on social media, especially within the #FitTok hashtag on TikTok.
What specific effects does the Japanese walking technique have on our bodies?
This form of interval walking utilizes the "overload principle" – a fundamental idea in exercise physiology that involves brief periods of intense effort, pushing the body to a level that prompts adaptation.
"One's physical fitness and health depend on the metabolic health of the muscles as well as the efficiency of the heart, lungs, and circulatory system," said John Buckley, a professor of exercise physiology at Keele University in the United Kingdom, to Euronews Health.
To make these organs adjust, we need to challenge them," he added. "By creating small bursts of intense exercise, we are pushing the muscles, heart, and lungs into a state where they must adapt further.
This reflects the movement patterns seen in evolution. Humans are designed for short periods of intense exertion—like hunting or avoiding threats—alternating with longer, less strenuous activities.
The advantages of Japanese walking for health
According to Buckley, Japanese walking can assist in addressing major health concerns linked to physical activity and diet, such as diabetes, cardiovascular disease, and weight gain, by encouraging more intense movement.
The approach may assist in addressing these issues by enhancing insulin responsiveness, lowering blood pressure, and increasing energy burn after physical activity.
"Even small levels of exercise can help lower our blood sugar and reduce our blood pressure," Buckley stated.
The two factors are likely the long-term elements that have the greatest impact on people's heart and blood flow to the brain, helping to prevent strokes.
Mental concentration and emotional advantages
Although the physical benefits of Japanese walking are well-known, Buckley also believes it may offer advantages for mental well-being.
"Physical exercise, when considering the research, offers equally significant advantages," he stated.
He mentioned that the concentration needed during intense interval training could potentially lead to a state of mindfulness.
"If the need arises to increase the intensity, then your mind must be concentrated on the task at hand," he stated.
This is supported by arecent reviewwhich revealed that High-Intensity Interval Training (HIIT) can greatly alleviate signs of anxiety, especially among those with lower initial levels of anxiety.
The approach is also highly adaptable and can be conveniently used for various forms of physical activity like biking, swimming, or even weightlifting.
Indeed, TikTok may have genuinely discovered a fitness trend that is truly deserving of the attention.