The Effects of Plantar foot Pressure and EMG Activation of Neck, Lumbar and Low Limbs by Using Carrier during Walking

이상열,; 장종성,; 이명희,

doi:10.5103/kjsb.2009.19.2.237

Cited by 7 publications

(5 citation statements)

References 8 publications

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“…Moreover, the center of gravity moves forward when the load is placed on the front, causing higher back muscle activation for compensation 2,11) . In this study, the plantar foot pressures placed upon the left and right sides were measured when there was loading on the rear side due to a backpack.…”

Section: Discussionmentioning

confidence: 99%

“…While balance in static posture can be maintained without losing much energy due to the absence of acceleration in the lower limbs and trunk, maintaining balance during gait requires higher energy due to acceleration in the lower limbs and trunk, increasing instability 9) . There have been a number of studies regarding the balance in static posture and in dynamic posture, as well as regarding balance according to the location of external load 2,10) . However, there has not been enough study of external load-carrying in static posture and during gait.…”

Section: Introductionmentioning

confidence: 99%

“…For normal gait, the center of the body should be on the midline at stance, specifically at 55% of the height measured from the foot, i.e., the front of the second sacral vertebra body 2) . The center of gravity supports the gait at minimum energy expense as it enables continuous change in joint angles in a regular pattern according to the gait cycle regardless of the walking speed 3) .…”

Section: Introductionmentioning

confidence: 99%

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The Comparison of Pressure of the Feet in Stance and Gait by the Types of Bags

2010

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Abstract. [Purpose] This study attempted to examine the imbalance between the left and right side in standing and during gait among college students according to the way they wore their bags and the weight of the bag.[Subjects] The subjects were forty healthy Korean undergraduate students who were divided into two groups: a shoulder pack group and a backpack group. Five different weights were used for the bags: 0, 2, 5, 10 and 15 kg.[Methods] A Zebris FDM-T Treadmill (Zebris, Germany) was used for measuring plantar foot pressure. The plantar foot pressures in standing and during gait were measured using different bag types and weights. The paired t-test was used to compare plantar foot pressure between the left and right side.[Results] The backpack group did not show a significant difference between the left and right sides in standing and during gait regardless of the bag weight. Meanwhile, the shoulder pack group began to show differing plantar foot pressures between the left and right sides at a bag weight of 5 kg. However, no difference in plantar foot pressure was observed at any bag weight during gait.[Conclusion] The study results show that the plantar foot pressure differs between the left and right sides in standing when wearing shoulder packs heavier than 5 kg, while no such difference was observed during gait. Thus, walking while wearing a shoulder pack heavier than 5 kg is likely to cause musculoskeletal disorder due to the overuse of the muscle on the contralateral side.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Comparison of Pressure of the Feet in Stance and Gait by the Types of Bags

2010

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“…Due to recent studies that emphasize the importance of emotional connections with the baby through physical contact (Harmon, 2010), young mothers prefer to use baby carriers, especially the ones worn on the front of the body or with hip seats, rather than strollers. Wearing baby carriers on the front causes more pressure on the waist compared to wearing them on the back (Lee et al , 2009). Moreover, walking while carrying babies on the front cause lopsidedness due to the weight, leading to focused pressure on the waist that can result in pain and diseases (Lee, 2016; Wall-Scheffler et al , 2007).…”

Section: Introductionmentioning

confidence: 99%

Type and wearing method-dependent COP and muscle fatigue measurement of baby carriers for the development of smart baby carriers

Lee

Hong

2018

IJCST

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Purpose The purpose of this paper is to investigate how the center of pressure (COP) changes depending on the type and wearing method of baby carriers, which is fundamental research for the development of smart baby carriers. In addition, the most comfortable and least burdensome type and method of wearing baby carriers is suggested. Design/methodology/approach The COP and muscle fatigue were measured depending on the three types and wearing method of baby carriers. And then, the subjective stability, comfort, and fatigue were analyzed. Findings The results of this study show that horizontal changes to the COP are greater and when baby carriers are worn loosely, subjective comfort is worse. Furthermore, when the shoulder straps are worn loosely, the center of mass moves downwards, lowering the muscle fatigue of the shoulders, but greatly raising the muscle fatigue of the waist and thighs. Comparison of the shapes of baby carriers showed that X-type produced greater muscle fatigue in the shoulders, waist, and thighs, as well as greater subjective fatigue in the shoulders. However, subjective fatigue in the waist decreases when baby carriers without waist support are worn. Originality/value It is expected that changes in COP values based on the type and method of wearing baby carriers will be applied as fundamental data for the development of automatic-adjusting smart baby carriers that prevent muscular pain and concentrated pressure.

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“…It was found that the external load located in front of the waist required greater activity of the ES muscles [18]. In addition, although worn in the same direction, the muscle activity was different according to the differing heights of the application of the baby carrier.…”

Section: Discussionmentioning

confidence: 98%

Investigation of wearing methods of a baby carrier on muscle activation during trunk flexion-extension in healthy women

Park

Shin

Nam

2020

PTRS

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Objective: Many caregivers often carry infants using baby carriers until they are approximately 36 months old. The purpose of this study was to compare the muscular activity of the trunk and lower leg muscles during trunk flexion-extension movements in correspondence to various wearing methods of a baby carrier blanket. Design: Cross-sectional study. Methods: Sixteen healthy adult women were to wear baby carrier blankets in five different ways in terms of direction and height, followed by flexion-extension of the trunk. Erector spinae (ES), rectus abdominis, rectus femoris (RF), biceps femoris (BF) muscle activities and triaxial acceleration of trunk were investigated. Results: The front-wearing method of the baby carrier blanket increased the muscular activity of the ES muscle, and wearing the baby carrier blanket at waist height in the same direction was significantly higher than wearing it at pelvic height (p<0.05). As the angle of flexion increased during trunk flexion-extension, the muscle activity of the ES, BF, and the RF increased. There was a greater increase in muscle activity of the ES and the BF during extension compared to flexion (p<0.05). Conclusions: If it is difficult to wear a baby carrier blanket due to lumbar pain, it is recommended to lower the wearing height of the baby carrier to the pelvic level so that the external load can be transferred to the lower extremity. In addition, it appears to be necessary to hold the baby and distribute the load onto the waist through proper body control when performing flexion-extension movements of the trunk. More objective and scientific research that includes various daily tasks and evaluation methods are needed.

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The Effects of Plantar foot Pressure and EMG Activation of Neck, Lumbar and Low Limbs by Using Carrier during Walking

Cited by 7 publications

References 8 publications

The Comparison of Pressure of the Feet in Stance and Gait by the Types of Bags

The Comparison of Pressure of the Feet in Stance and Gait by the Types of Bags

Type and wearing method-dependent COP and muscle fatigue measurement of baby carriers for the development of smart baby carriers

Investigation of wearing methods of a baby carrier on muscle activation during trunk flexion-extension in healthy women

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