The response of the body when carrying a handbag

Phonpichit, C.; Chansirinukor, Wunpen; Akamanon, Chanut

doi:10.3233/wor-162429

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…Simon and Chow [39] using a multi-objective goal programming model recommended that the most critical backpack load should be 13 % of body weight for healthy male college students. Phonpichit et al [40] conducted a study on the body's response to carrying a hand bag and concluded that carrying a handbag greater than 10 % BW continuously can cause musculoskeletal problems. However, there are some limitations on the results obtained from this study.…”

Section: Resultsmentioning

confidence: 99%

Determination of Backpack Mass Limit for Students in a University in Abeokuta, Southwestern Nigeria

Ismaila

2016

JESR

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The aim of this study was to use the Froude number to determine the mass of the backpack that a student should carry in tertiary institutions. A model was developed using the Froude number with leg length and power of the students as inputs. It was established that a student in tertiary institutions should carry a backpack with a mass of at most 10 % of the body mass. Similar studies are recommended for primary and secondary schools.

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Section: Resultsmentioning

confidence: 99%

Determination of Backpack Mass Limit for Students in a University in Abeokuta, Southwestern Nigeria

Ismaila

2016

JESR

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“…12 The previous studies also have investigated the effect of type or weight of bags on posture or muscle activity. [12][13][14][15] According to Al-Khabbataz et al 16 , the activity of the rectus abdominis muscle significantly increased with an increase in backpack weight, in that a backpack weight of 20% body weight caused the most significant muscular and postural changes and should be avoided. Phonpichit et al 15 found that the activity of the upper trapezius and erector spinae muscles becomes asymmetrical with increments in handbag weight.…”

Section: Introductionmentioning

confidence: 99%

Effects of Same-Sided and Cross-Body Load Carrying on the Activity of the Upper Trapezius and Erector Spinae Muscles

Lee¹

2017

J KEMA

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Journal of KEMA INTRODUCTIONPeople use various types of bags in their daily lives, including backpack, handbag, and shoulder bag.1-3 The preference of the bag varies according to age, backpacks are mainly used by children and shoulder bag or handbag are mostly used by adults. 2,4 The weight of bag acts as an extrinsic asymmetrical load that affects the body's characteristics. 5,6 When a person carries a shoulder bag over one shoulder, s/he unconsciously changes shoulders and spinal alignment to maintain balance. 6,7 The spine is deviated laterally away from the load, and the shoulder is elevated, which increases stress in the lower limb joints and may also affect dynamic balance during gait. [6][7][8] Many studies have investigated the effects of asymmetrical loads on posture and muscle activity during gait. 1,6,8 Asymmetric loads applied to the left side cause a shift in the lumbosacral joint moment dominance to the right side during the left-right single support phase.9 Fowler et al. (2006) quantified the kinematics of spine and stature loss induced by carrying an asymmetric load. 10 A shoulder bag increases the asymmetry of the trunk during gait. Purpose The purpose of this study was to investigate the effects of same-sided and cross-body carrying on the activity of the upper trapezius and erector spinae muscles in standing position. Study designControlled laboratory study, with a pretest-posttest design.Methods 20 healthy students were asked to carry the shoulder bag, placing it either on a shoulder on the same side of the body as the bag (same-sided load) or in cross-body fashion in standing position. We used surface electromyography to measure the activities of both upper trapezius and erector spinae muscles. We analyzed the data by using paired t-test and compared muscle activity in two methods. The alpha level was set at 0.05. ResultsThe activity of the right upper trapezius and left erector spinae muscles differed significantly between the two carrying methods (p<0.05), showing significantly less activity under the cross-body condition. The activity of the left trapezius and right erector spinae muscles did not differ significantly between the two carrying methods (p>0.05). ConclusionsWe suggest that proper carrying method for shoulder bag is needed to help prevent musculoskeletal pain caused by asymmetrical muscle activity.

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Safe backpack weight limit for secondary school students in Ibadan, Southwestern Nigeria

Ismaila

2018

Alexandria Engineering Journal

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The response of the body when carrying a handbag

Abstract: Continuously carrying a handbag greater than 10% BW can cause musculoskeletal problems.

Cited by 5 publications

References 15 publications

Determination of Backpack Mass Limit for Students in a University in Abeokuta, Southwestern Nigeria

Determination of Backpack Mass Limit for Students in a University in Abeokuta, Southwestern Nigeria

Effects of Same-Sided and Cross-Body Load Carrying on the Activity of the Upper Trapezius and Erector Spinae Muscles

Safe backpack weight limit for secondary school students in Ibadan, Southwestern Nigeria

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