Effect of Smart-phone Use According to Types of Carrying a Bag on Muscle Characteristics and Balance Ability in Adults in Their 20S with Chronic Ankle Instability (가방 착용 방향에 따른 스마트폰의 사용이 만성 발목 불안정성을 가진 20대 성인의 근육 특성과 균형 능력에 미치는 영향)

정범철; Kim, Yong Su (김용수); Yoo Kyung Tae (유경태)

Effect of Smart-phone Use According to Types of Carrying a Bag on Muscle Characteristics and Balance Ability in Adults in Their 20S with Chronic Ankle Instability

Journal of the Korean Society of Physical Medicine
Abbr : J Korean Soc Phys Med
2023, 18(2), pp.83-92
Publisher : The Korean Society of Physical Medicine
Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy
Received : January 23, 2023
Accepted : February 23, 2023
Published : May 31, 2023

정범철 ¹, Kim, Yong Su ², Yoo Kyung Tae ³

¹sg삼성조은병원
²신성대학교
³남서울대학교

Accredited

ABSTRACT

PURPOSE: This study examined the effect of using a smartphone according to the direction of wearing a bag on muscle characteristics and balance ability in adults in their 20s with chronic ankle instability. METHODS: Twelve people with chronic ankle instability were examined for three weeks. The types of carrying a bag were classified into three conditions: to the right, to the left, and on both sides. The muscle characteristics and balance ability were measured and analyzed. The one-way ANOVA was used to obtain a difference between conditions. RESULTS: A significant difference in the muscle tone of medial gastrocnemius was observed between the dominant group and the non-dominant group. The muscle tone and stiffness of the peroneus longus decreased significantly after walking with a smartphone and carrying a bag. The maximum slope of the forward and reverse directions increased and decreased significantly, respectively, after walking with a smartphone and carrying a bag on both sides. CONCLUSION: In this study, muscle fatigue causes a decrease in muscle tone and stiffness with chronic ankle instability when carrying a heavy back while walking, and there were asymmetric changes in the balance ability. Therefore, adults with chronic ankle instability should carefully avoid carrying a heavy bag for extended times, irrespective of the style or type of the bag.

KEYWORDS

Bag, Balance, Chronic ankle instability, Muscle tone, Smartphone

Citation status

* References for papers published after 2023 are currently being built.

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