Effects of infant transportation on lower extremity joint moments: Baby carrier versus carrying in-arms

Williams, Lauren; Standifird, Tyler; Madsen, Megan

doi:10.1016/j.gaitpost.2019.02.004

Cited by 11 publications

(12 citation statements)

References 21 publications

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“…Mechanical loading has been identified as an important risk factor of musculoskeletal diseases such as low back pain [1,2]. Although biomechanical analysis during an infant carrying motion has been performed, some studies have focused on lower extremities [15] with only a single dummy weight [15,16].…”

Section: Discussionmentioning

confidence: 99%

“…These weights (4.6 kg, 7.6 kg, and 9.8 kg) of infant dummies used in this study were selected as average weights of 1-month, 6-month, and 12-month infants in Korea, respectively [18]. Previous studies have also used infant dummies for biomechanical analysis during infant care [15,16]. Furthermore, it has been reported that carrying an infant is not significantly different from carrying an infant dummy during walking [9].…”

Section: Experiments and Analysismentioning

confidence: 99%

“…Statistical analysis was performed using SPSS ver. 16 for Windows (SPSS Inc., Chicago, IL, USA). The significant level was defined at p < 0.05.…”

Section: Experiments and Analysismentioning

confidence: 99%

“…They suggested that carrying an infant alternating on preferred and non-preferred sides using a sling could help prevent musculoskeletal diseases resulting from paraspinal muscle hyperactivation and excessive lumbar hyperextension. Williams et al have investigated lower extremity joint moments during carrying an infant using a baby carrier [16]. They demonstrated that a baby carrier could decrease the loading knee abduction moment by 8.7% and the loading knee extension moment by 16.7% compared to an in-arm carriage.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of maximum joint moment during infant lifting-up motion

Kim

Eom

Kwon

2022

THC

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BACKGROUND: Infant care activities can induce musculoskeletal disease. However, little is known about the biomechanical joint load during lifting-up of an infant. OBJECTIVE: The aim of this study was to investigate normalized maximum moment during lifting-up of infant dummies weighing 4.6 kg, 7.6 kg, and 9.8 kg. METHODS: Six healthy young subjects participated in our study. All subjects performed lifting-up activities of dummies to shoulder height with their feet apart and natural postures in their comfortable speed. Three-dimensional reflective marker trajectories and ground reaction forces were used as input to calculate joint moments using a full body musculoskeletal model. Joint moments were normalized by each subject’s body mass. Friedman’s test was performed to compare mean differences of normalized joint moments for lifting up three dummy weights. RESULTS: Lumbar joint had the greatest normalized joint moment. Lumbar and hip extension moments were significantly increased with dummy weight (P< 0.05). In contrast, knee extension and ankle plantarflexion moment were not significantly affected by dummy weight (P> 0.05). CONCLUSIONS: These results indicate that the lumbar joint plays the most important role in infant lifting-up motion and that the load of lumbar and hip joint should be reduced when lifting a heavier infant. These results could contribute to the development of an effective lifting strategy and an assisting device for lifting an infant.

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Section: Discussionmentioning

confidence: 99%

Section: Experiments and Analysismentioning

confidence: 99%

“…Statistical analysis was performed using SPSS ver. 16 for Windows (SPSS Inc., Chicago, IL, USA). The significant level was defined at p < 0.05.…”

Section: Experiments and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of maximum joint moment during infant lifting-up motion

Kim

Eom

Kwon

2022

THC

View full text Add to dashboard Cite

show abstract

“…Caregivers need to carry infants for much of the early months of life, as human babies are born helpless and rely on their parents for mobility. Carrying an infant can be strenuous on caregivers not only physically1–3 but practically, as they may also need to care for other children or have other responsibilities within and outside of the house. In order to keep their hands free to attend to other tasks, caregivers may choose babywearing, the use of an ergonomic aid to hold their baby on their body.…”

Section: Introductionmentioning

confidence: 99%