Lower extremity muscle activity during descent from varying step heights

Gerstle, Emily E.; Keenan, Kevin G.; O’Connor, Kristian M.; Cobb, Sidney

doi:10.1016/j.jelekin.2018.06.006

Cited by 4 publications

(8 citation statements)

References 23 publications

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“…The results showed no significant effects of the muscle activation of the two muscles according to stair height [15]. Gerstle et al [16] studied the influence of landing strategy and step height on lower extremity muscle activity of uninjured individuals during transition step descent. They evaluated the participant walked along a level walkway, stepped down a single step on the leading leg's peroneals, TA and medial gastrocnemius before and after initial contact landed with the heel or forefoot, and continued walking.…”

Section: Discussionmentioning

confidence: 99%

“…They evaluated the participant walked along a level walkway, stepped down a single step on the leading leg's peroneals, TA and medial gastrocnemius before and after initial contact landed with the heel or forefoot, and continued walking. They reported all muscle activity increased with each step height increment during the post-contact period, so it is important the landing strategy and step height when designing or interpreting investigations of transition stair negotiation [16]. This study examined the muscle activations on soleus and TA muscle between two landing strategies of the leading limb, forefoot and whole foot's initial contact during descending stairs.…”

Section: Discussionmentioning

confidence: 99%

“…Over one quarter of the ankle sprains requiring hospital care over a four year period were the result of a fall from stairs and falls on stairs occur three times more often during descent than ascent. During the stairs descending, lower extremity musculature is critical to the positioning of the foot and ankle for initial contact and stabilizing the structures fallowing contact [16,17]. Therefore, an efficient muscle performance without fatigue involved in maintaining proper landing and postural stability can be seen as important for safe stair descending and prevention of falls.…”

Section: Discussionmentioning

confidence: 99%

“…In addition, this study compared the muscle activities of soleus and TA, which are mutually antagonistic muscles among the external muscles that act upon the initial contact according to the landing strategy. Unlike previous studies that compared just before and right after landing of the leading limb, this study measures electromyography at the muscle activations of soleus and TA on initial contact [16]. Gerstle et al [16] reported that the muscle activity of the plantar flexors was higher than that of walking with the power generation regardless of the height of the stairs when walking with the forefoot touched.…”

Section: Discussionmentioning

confidence: 99%

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Muscle Activation of Soleus and Tibialis Anterior according to Landing Strategy of Initial Contact during Descending Stairs: Comparison of Forefoot and Whole Foot

Choi

Yun-bin

Park

2021

PTRS

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To control the rate at which body weight drops, forefoot initiates floor contact with the limb relatively extended at each joint. However, when the knee joints could not extend enough with going down the stairs, the forefoot cannot be contact initially. The purpose of this study was to investigate the differences between forefoot and whole foot in initial contract on soleus and tibialis anterior for health young adults when descending stairs. Design: A cross-sectional observational study design. Methods: Fifteen healthy young adults participated in this study. To compare between forefoot and whole foot in initial contact when going down the stairs, this study measured muscle activation on soleus and tibialis anterior. This study used the paired t-test to analyze the collected data and compare the supporting conditions. Results: After analyzing, the muscle activation of soleus was not statistically significant difference as 25.16% at forefoot initial contact and 24.37% at whole foot initial contact when descending stairs (p>0.05). However, the muscle activation of tibialis anterior muscle was significantly difference was 49.19% at forefoot contact and 71.55% at whole foot contact. Conclusions: The results of this study was that the muscle activation of the tibialis anterior was a higher at whole foot contact than that at fore foot contact when descending stairs. This study suggests that the landing strategy of the initial contact is a beneficial effect at the forefoot contact to maintain the postural balance and the muscle performance effectively when descending stairs in individuals with healthy young adults.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Muscle Activation of Soleus and Tibialis Anterior according to Landing Strategy of Initial Contact during Descending Stairs: Comparison of Forefoot and Whole Foot

Choi

Yun-bin

Park

2021

PTRS

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“…Descending increased rise steps (255 mm) requires greater plantarflexor and dorsiflexor activity upon landing (Gerstle et al, 2018), which may reflect a challenge to medial-lateral stability. Increased maximal ankle capacities following exercise training may have contributed to assist in controlling medial-lateral CoM stability.…”

Section: Discussionmentioning

confidence: 99%

Combined Resistance and Stretching Exercise Training Benefits Stair Descent Biomechanics in Older Adults

et al. 2019

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Introduction Stair descent is a physically demanding activity of daily life and common risk for falls. Age-related deteriorations in ankle joint capacities make stair descent particularly challenging for older adults in built environments, where larger rise steps are encountered. Exercise training may allow older adults to safely cope with the high biomechanical demands of stair descent. However, little is known about the demands of increased rise stairs for older adults, nor the impact of exercise. Aim We investigated whether the effects of lower-limb resistance training would alter joint kinetics and movement strategies for older adults when descending standard rise, and increased rise stairs. Methods Fifteen older adults descended a four-step stair adjusted to standard rise (170 mm), and increased rise (255 mm) on separate visits. Between these two visits, randomly allocated participants underwent 16 weeks of either: resistance exercise training ( n = 8) or habitual activity ( n = 7). Kinetic data were measured from step-mounted force plates, and kinematic data from motion-capture cameras. Training involved twice-weekly sessions of lower-limb resistance exercises (three sets of ∼8 repetitions at ∼80% three-repetition maximum), and static plantarflexor stretching (three, 45 s holds per leg). Results Standard stairs – Peak ankle joint moments increased ( p < 0.002) and knee joint moments decreased ( p < 0.01) during descent after exercise training. Peak centre of pressure-centre of mass (CoP-CoM) separations increased in posterior ( p = 0.005) and medio-lateral directions ( p = 0.04) after exercise training. Exercise training did not affect CoM descent velocity or acceleration. Increased rise stairs – Required greater ankle, knee, and hip moments ( p < 0.001), peak downward CoM velocity and acceleration ( p = 0.0001), and anterior-posterior CoP-CoM separation ( p = 0.0001), but lower medial-lateral CoP-CoM separation ( p < 0.05), when compared to standard stair descent. Exercise training did not affect joint kinetics or movement strategies. Discussion Exercise training increased the maximum joint ROM, strength and force production of the ankle, and enabled a greater ankle joint moment to be produced in single-leg support (lowering phase) during standard stair descent. Descending increased rise stairs raised the task demand; exercise training could not overcome this. Future research should prioritize the ankle joint in stair descent, particularly targeting plantarflexor torque development across stairs of varying riser heights.

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Influence of foam thickness on the control of EMG activity during a step-down task in females

Jesunathadas

Lippa²,

York

et al. 2021

Journal of Electromyography and Kinesiology

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Lower extremity muscle activity during descent from varying step heights

Cited by 4 publications

References 23 publications

Muscle Activation of Soleus and Tibialis Anterior according to Landing Strategy of Initial Contact during Descending Stairs: Comparison of Forefoot and Whole Foot

Muscle Activation of Soleus and Tibialis Anterior according to Landing Strategy of Initial Contact during Descending Stairs: Comparison of Forefoot and Whole Foot

Combined Resistance and Stretching Exercise Training Benefits Stair Descent Biomechanics in Older Adults

Influence of foam thickness on the control of EMG activity during a step-down task in females

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