Effects of Changes in the Indoor and Outdoor Environmental on the Walking Speed and Lower Extremity Muscle Activities in People Aged Forty and Older than Seventy Years (실내 ․ 외 보행환경의 변화가 40대와 노인의 보행속도와 다리 근활성도에 미치는 영향)

Jun-Young Lee (이준영); Tackhoon Kim (김택훈)

doi:10.13066/kspm.2018.13.4.139

Effects of Changes in the Indoor and Outdoor Environmental on the Walking Speed and Lower Extremity Muscle Activities in People Aged Forty and Older than Seventy Years

Journal of the Korean Society of Physical Medicine
Abbr : J Korean Soc Phys Med
2018, 13(4), pp.139-148
DOI : 10.13066/kspm.2018.13.4.139
Publisher : The Korean Society of Physical Medicine
Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy
Received : October 4, 2018
Accepted : November 9, 2018
Published : November 30, 2018

Jun-Young Lee ¹, Tackhoon Kim ²

¹단국대학교
²한서대학교

Accredited

ABSTRACT

PURPOSE: This study compared the effects of indoor and outdoor environmental changes on the activity of the major lower limb muscles and walking factors in people 40-50 years and those aged older than 70 years. METHODS: Ten middle-aged people in their forties (age:44.2±2.7, BMI:21.8±1.8) and 10 elderly aged more than 70 years (age:76.4±5.9, BMI:22.2±1.9) with a normal walking ability were included. The participants walked 100 m both indoors and outdoors at their own speed. Using a 3D motion analyzer and EMG, the walking speed, angle of the ankle and activity changes of the lower limb muscles were compared. RESULTS: Significant differences in walking speed and peak-plantar flexion angle were observed between the two groups (p<.05). The muscular activity of the gastrocnemius muscle (GCM) was significantly different outdoors in the swing phase between the two groups (p<.05). In the people aged in their forties, the muscular activity of the rectus femoris (RF) was significantly higher outdoors than indoors (p<.05). In the elderly, however, the muscular activity of the RF was lower outdoors than indoors (p<.05). When compared to those in there forties, the muscular activity of the outdoor RF significantly decreased in the elderly group (P<.05). The muscular activity of the biceps femoris (BF) in the elderly decreased significantly outdoors compared to indoors (p<.05). CONCLUSION: For the elderly, increasing the exposure to the new environments or focusing on the performance of repeated movements for gradual speed control and precise movements is required to maintain normal gaits and movements that are less affected by environmental changes.

KEYWORDS

Electromyography, Enviroment, Gait, Walking speed

Citation status

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

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Journal of the Korean Society of Physical Medicine 2023 KCI Impact Factor : 0.45

Effects of Changes in the Indoor and Outdoor Environmental on the Walking Speed and Lower Extremity Muscle Activities in People Aged Forty and Older than Seventy Years

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

Journal of the Korean Society of Physical Medicine 2023 KCI Impact Factor : 0.45

Effects of Changes in the Indoor and Outdoor Environmental on the Walking Speed and Lower Extremity Muscle Activities in People Aged Forty and Older than Seventy Years

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KEYWORDS

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