Whole-body angular momentum during stair ascent and descent

Silverman, Anne K.; Neptune, Richard R.; Sinitski, Emily H.; Wilken, Jason M.

doi:10.1016/j.gaitpost.2014.01.025

Cited by 66 publications

(51 citation statements)

References 24 publications

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“…However, the range of whole-body angular momentum has been found to increase when dynamic balance is compromised in the presence of perturbations (Martelli et al, 2013; Sheehan et al, 2015). Angular momentum has been investigated over a range of walking tasks such as steady-state walking (Herr and Popovic, 2008), walking at increasing speeds (Bennett et al, 2010), incline/decline walking (Silverman et al, 2012) and stair ascent/descent (Silverman et al, 2014). Angular momentum has also been analyzed during other movement tasks such as sit-to-stand (Reisman et al, 2002; Riley et al, 1997) and recovering from a trip (Pijnappels et al, 2004; Potocanac et al, 2014), and in different patient populations including elderly (Kaya et al, 1998; Pijnappels et al, 2005; Simoneau and Krebs, 2000), amputee (D’Andrea et al, 2014; Pickle et al, 2014; Sheehan et al, 2015; Silverman and Neptune, 2011) and post-stroke (Nott et al, 2014) subjects, and children with cerebral palsy (Bruijn et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Muscle contributions to frontal plane angular momentum during walking

Neptune

McGowan

2016

Journal of Biomechanics

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The regulation of whole-body angular momentum is important for maintaining dynamic balance during human walking, which is particularly challenging in the frontal plane. Whole-body angular momentum is actively regulated by individual muscle forces. Thus, understanding which muscles contribute to frontal plane angular momentum will further our understanding of mediolateral balance control and has the potential to help diagnose and treat balance disorders. The purpose of this study was to identify how individual muscles and gravity contribute to whole-body angular momentum in the frontal plane using a muscle-actuated forward dynamics simulation analysis. A three-dimensional simulation was developed that emulated the average walking mechanics of a group of young healthy adults (n=10). The results showed that a finite set of muscles are the primary contributors to frontal plane balance and that these contributions vary throughout the gait cycle. In early stance, the vasti, adductor magnus and gravity acted to rotate the body towards the contralateral leg while the gluteus medius acted to rotate the body towards the ipsilateral leg. In late stance, the gluteus medius continued to rotate the body towards the ipsilateral leg while the soleus and gastrocnemius acted to rotate the body towards the contralateral leg. These results highlight those muscles that are critical to maintaining dynamic balance in the frontal plane during walking and may provide targets for locomotor therapies aimed at treating balance disorders.

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Section: Introductionmentioning

confidence: 99%

Muscle contributions to frontal plane angular momentum during walking

Neptune

McGowan

2016

Journal of Biomechanics

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“…The appropriate regulation of 67 whole-body angular momentum is essential for maintaining stable gait (Herr and Popovic, 2008). Whole-68 body angular momentum has been used to investigate how younger and older healthy adults stabilize the 69 gait pattern over a range of walking tasks such as steady-state walking (Herr and Popovic, 2008), walking 70 at different speeds (Bennett et al, 2010, Thielemans et al, 2014, walking at different step lengths 71 (Thielemans et al, 2014), walking with an additional weight on the wrist or ankle (Thielemans et al, 2014), 72 incline/decline walking (Silverman et al, 2012), stair ascent/descent (Silverman et al, 2014), and recovering 73 from a trip (Pijnappels et al, 2005, Pijnappels et al, 2004, Potocanac et al, 2014. These studies have shown 74 that the range of angular momentum during walking is kept low through the cancellation of angular 75 momenta between body segments.…”

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confidence: 99%

The effect of anteroposterior perturbations on the control of the center of mass during treadmill walking

Bogaart

Dieën

Bruijn

et al. 2019

Preprint

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“…[2][3][4] Descent phase of stair negotiation should be noted, because it is a more challenging task than stair ascent (fall risk is more than three times and the ground reaction force (GRF) and ankle range of motion is much greater). [4][5][6][7] Therefore, reducing the joint load during stair descent is important for the prevention of possible injury and falls, however, there has been no report comparing the joint load in different walking strategies of stair descent.…”

Section: Introductionmentioning

confidence: 99%

Ankle Joint Moments in Different Foot Strike Methods During Stair Descent

Jeon

Choi

Heo

et al. 2019

J. Mech. Med. Biol.

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The purpose of this study was to compare the ankle joint moments in different foot strike patterns during stair descent and to find a better strategy. Methods: Twenty young subjects participated in this study. Subjects performed two trials of descending stairs in rearfoot strike (RFS) and forefoot strike (FFS) strategies. Kinematic and kinetic data were measured by a motion capture system and force plates. Ankle joint moments, ground reaction forces, and moment arms in three planes of motion were calculated from the measured data. The rootmean-squared means of ankle joint moments, ground reaction forces, and moment arms were compared between different foot strike patterns for each phase of stair descent (weight acceptance, forward continuance, and controlled lowering). Results: In the weight acceptance phase, FFS showed greater ankle joint moments than RFS in all three (dorsi/plantar-flexion, inversion/eversion, and internal/external rotation) directions (p < 0:01). In the forward continuance phase, FFS showed greater dorsi/plantar moments than RFS (p < 0:05). In controlled lowering phase, FFS showed smaller dorsi/plantar moments than RFS (p < 0:01). Discussion: The greater ankle joint moments of FFS in the weight acceptance phase were influenced by both the greater GRF magnitudes and greater moment arms. The greater dorsi/ plantar moments of FFS in the forward continuance phase and the smaller dorsi/plantar moment of FFS in the controlled lowering phase were dominated by the greater moment arm and the smaller ground reaction force, respectively. RFS strategy resulted in smaller ankle joint moments in the majority of stair descent phases (weight acceptance and forward continuance), therefore, RFS would be a better strategy than FFS for stair descent in terms of ankle joint load.

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Whole-body angular momentum during stair ascent and descent

Cited by 66 publications

References 24 publications

Muscle contributions to frontal plane angular momentum during walking

Muscle contributions to frontal plane angular momentum during walking

The effect of anteroposterior perturbations on the control of the center of mass during treadmill walking

Ankle Joint Moments in Different Foot Strike Methods During Stair Descent

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