Korean Journal of Applied Biomechanics (한국운동역학회지)

Korean Society of Applied Biomechanics (한국운동역학회)
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Postural Control Strategies on Smart Phone use during Gait in Over 50-year-old Adults

50세 이상 성인의 보행 시 스마트폰 사용에 따른 자세 조절 전략

  • Yu, Yeon Joo (Department of Sports and Health Sciences, Sangmyung University) ;
  • Lee, Ki Kwang (Department of Sports Health and Rehabilitation, Kookmin University) ;
  • Lee, Jung Ho (K2 Korea Co.) ;
  • Kim, Suk Bum (Department of Rehabilitation Personal Training, Konyang University)
  • Received : 2019.06.03
  • Accepted : 2019.06.18
  • Published : 2019.06.30
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Abstract

Objective: The aim of this study was to investigate postural control strategies on smart phone use during gait in over 50-year-old adults. Method: 8 elderly subjects (age: $55.5{\pm}3.29yrs$, height: $159.75{\pm}4.20cm$, weight: $62.87{\pm}8.44kg$) and 10 young subjects (age: $23.8{\pm}3.19yrs$, height: $158.8{\pm}5.97cm$, weight: $53.6{\pm}5.6kg$) participated in the study. They walked at a comfortable pace in a gaitway of ~8 m while: 1) reading text on a smart phone, 2) typing text on a smart phone, or 3) walking without the use of a phone. Gait parameters and kinematic data were evaluated using a three-dimensional movement analysis system. Results: The participants read or wrote text messages they walked with: slower speed; lesser stride length and step width; greater flexion range of motion of the head; more flexion of the thorax in comparison with normal walking. Conclusion: Texting or reading message on a smart phone while walking may pose an additional risk to pedestrians' safety.

Keywords

Table 1. Physical Characteristics of subjects and information of smart phone use

OOOSBL_2019_v29n2_71_t0001.png 이미지

Table 2. Gait parameters (mean ± s.d.)

OOOSBL_2019_v29n2_71_t0002.png 이미지

Table 3. Head and trunk movement in anterior and posterior axis (mean ± s.d.)

OOOSBL_2019_v29n2_71_t0003.png 이미지

Table 4. Hip, knee, ankle movement in anterior and posterior axis

OOOSBL_2019_v29n2_71_t0004.png 이미지

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