In recent years, the forward head and neck posture, which has attracted attention as a smartphone neck and a straight neck, is a posture seen in a wide range of age groups, including young people.A joint research group from Kanazawa University, Chukyo University, Hiroshima University, and Marquette University (USA) revealed that the cause of fatigue in the forward head and neck posture is abnormal muscle activity of the upper trapezius muscle.

 Continuing a posture in which the head is always forward causes various symptoms such as headaches and stiff shoulders.

 The research group consisted of two young subjects (nine subjects in the FHP group) who habitually assumed a forward head and neck position (head and neck angle of less than 53 degrees) and those with a normal head and neck position (head and neck angle of 9 degrees or more) ( A normal group of 53 people) were asked to hold three different sitting postures (comfortable posture, posture with the head and neck forward, and posture with the head and neck pulled back) for 10 minutes each. We investigated the relationship between muscle activity and fatigue in the buttocks.

 As a result, the FHP group complained of fatigue more strongly in all postures than the normal group, and excessive muscle activity occurred in the upper trapezius muscle.In addition, the normal group showed the least amount of fatigue complaints and muscle activity in the comfortable posture, whereas the FHP group exhibited strong complaints of fatigue and excessive muscle activity in all postures. and muscle activity did not change.

 Our results imply that changing the position of the head and neck alone does not reduce fatigue in the FHP group, suggesting the importance of correcting muscle activity abnormalities in the upper trapezius fibers.It is expected that these findings will be utilized in the future for the development of seats for the realization of intervention methods for forward head and neck posture and comfortable sitting posture.

Paper information:[Scientific Reports] Influence of forward head posture on muscle activation pattern of the trapezius pars descendens muscle in young adults

Hiroshima University

Learning to design your own life. A university that will shine in the world even after 100 years

5 undergraduate faculties and 12 research areas under the five principles of "spirit of seeking peace," "creation of new knowledge," "education to cultivate a rich sense of humanity," "coexistence with local and international communities," and "constant self-transformation." Comprehensive research university with Department 4 Research Institute.Promoting university reforms that focus on both educational and research capabilities, while continuously producing global human resources[…]

Kanazawa University

Flexible and flexible learning of specialized knowledge in a wide range of fields.Fostering human resources who will lead the global society

Kanazawa University, which boasts a history and tradition of more than 150 years, has a basic philosophy of "a research university that emphasizes education that is open to the region and the world," and is rich in humanity with specialized knowledge, problem-seeking ability, international sense, and ethical standards. By fostering talented human resources, we aim to become a "Kanazawa University that lives globally" and a "knowledge base in East Asia" [...]

Chukyo University

Fostering human resources with a wide range of education, deep knowledge, and practical skills who can play an active role in the international community

One of the leading comprehensive universities in Japan with 10 faculties and 20 departments.We are promoting the improvement of educational and research capabilities, social cooperation, internationalization, and strengthening of graduate cooperation.A lithe intellectual who can think and act on his own, build a further hall of fame for academics and sports, and acquire the ability, practical ability, and rich humanity to play an active role in the real world […]

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