Changes in postural sway as a function of prolonged walking

Thomas, Kathleen S.; VanLunen, B.; Morrison, Steven

doi:10.1007/s00421-012-2456-z

Cited by 13 publications

(8 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Studies have linked the loss of stability and an increase in variability of gait, particularly in the mediolateral direction, to the risk of falling in older adults (Maki, 1997) and retrospectively differentiated fallers and non-fallers (Toebes et al, 2012). Stability during gait can be affected by walking speed (Callisaya et al, 2012), fatigue (Thomas et al, 2013), perturbations (Oliveira et al, 2012) and load carriage (Kim et al, 2014;Kubinski and Higginson, 2012;McGowan et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effect of stable and unstable load carriage on walking gait variability, dynamic stability and muscle activity of older adults

Walsh

Low

Arkesteijn

2018

Journal of Biomechanics

View full text Add to dashboard Cite

Load carriage perturbs the neuromuscular system, which can be impaired due to ageing. The ability to counteract perturbations is an indicator of neuromuscular function but if the response is insufficient the risk of falls will increase. However, it is unknown how load carriage affects older adults. Fourteen older adults (65 ± 6 years) attended a single visit during which they performed 4 min of walking in 3 conditions, unloaded, stable backpack load and unstable backpack load. During each walking trial, 3-dimensional kinematics of the lower limb and trunk movements and electromyographic activity of 6 lower limb muscles were recorded. The local dynamic stability (local divergence exponents), joint angle variability and spatio-temporal variability were determined along with muscle activation magnitudes. Medio-lateral dynamic stability was lower (p = 0.018) and step width (p = 0.019) and step width variability (p = 0.015) were greater in unstable load walking and step width variability was greater in stable load walking (p = 0.009) compared to unloaded walking. However, there was no effect on joint angle variability. Unstable load carriage increased activity of the Rectus Femoris (p = 0.001) and Soleus (p = 0.043) and stable load carriage increased Rectus Femoris activity (p = 0.006). These results suggest that loaded walking alters the gait of older adults and that unstable load carriage reduces dynamic stability compared to unloaded walking. This can potentially increase the risk of falls, but also offers the potential to use unstable loads as part of fall prevention programmes.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of stable and unstable load carriage on walking gait variability, dynamic stability and muscle activity of older adults

Walsh

Low

Arkesteijn

2018

Journal of Biomechanics

View full text Add to dashboard Cite

show abstract

“…Our study demonstrated that there is no significant difference between CI during 10 and 20 min walking at 6 km/h, which is significantly different from walking at 3 km/h. Few studies have investigated how people change their gait patterns or adjust their posture after various durations of walking [ 36 , 37 ]. Thomas and colleagues studied static postural sway every 5-min interval over 35 min of walking at three different speeds, suggesting that physically active young adults demonstrated the ability of static postural adaptation at the beginning of the fast walking and then maintained the ability until the end of the task [ 37 ].…”

Section: Discussionmentioning

confidence: 99%

Complexity-Based Measures of Postural Sway during Walking at Different Speeds and Durations Using Multiscale Entropy

Liau

Lung

et al. 2019

Entropy

View full text Add to dashboard Cite

: Participation in various physical activities requires successful postural control in response to the changes in position of our body. It is important to assess postural control for early detection of falls and foot injuries. Walking at various speeds and for various durations is essential in daily physical activities. The purpose of this study was to evaluate the changes in complexity of the center of pressure (COP) during walking at different speeds and for different durations. In this study, a total of 12 participants were recruited for walking at two speeds (slow at 3 km/h and moderate at 6 km/h) for two durations (10 and 20 minutes). An insole-type plantar pressure measurement system was used to measure and calculate COP as participants walked on a treadmill. Multiscale entropy (MSE) was used to quantify the complexity of COP. Our results showed that the complexity of COP significantly decreased (p < 0.05) after 20 min of walking (complexity index, CI = −3.51) compared to 10 min of walking (CI = −3.20) while walking at 3 km/h, but not at 6 km/h. Our results also showed that the complexity index of COP indicated a significant difference (p < 0.05) between walking at speeds of 3 km/h (CI = −3.2) and 6 km/h (CI = −3.6) at the walking duration of 10 minutes, but not at 20 minutes. This study demonstrated an interaction between walking speeds and walking durations on the complexity of COP.

show abstract

“…Exercise affects all three levels of the sensorimotor process [20]. Fatigue from cycling [21,22], running or walking [20,[23][24][25], rowing [26] and triathlon events [27] all reduced postural stability acutely. The duration of any exercise induced fatigue on stability is dependent on the type of exercise, intensity, duration and type of muscle contractions involved.…”

Section: Introductionmentioning

confidence: 99%

Effects of Interrupting Sitting with Use of a Treadmill Desk Versus Prolonged Sitting on Postural Stability

et al. 2019

View full text Add to dashboard Cite

High amounts of sitting increase the risk of non-communicable disease and mortality. Treadmill desks make it possible to reduce sitting during the desk-based workerʼs day. This study investigated the acute effect on postural stability of interrupting prolonged sitting with an accumulated 2-h of light-intensity treadmill desk walking. Twenty-one sedentary adults participated in this randomized acute crossover trial, with two 6.5 h conditions: 1) uninterrupted sitting and 2) interrupted sitting with accumulated 2 h light-intensity treadmill desk walking. Pre- and post-condition, participants performed four postural stability tests on a pressure plate (bipedal and unipedal standing stance, eyes open and eyes closed). Anteroposterior center of pressure amplitude showed a significant condition x time interaction in bipedal eyes closed (F(1,20)=4.62, p=0.046) and unipedal eyes open (F(1,20)=9.42, p=0.006) tests, and mediolateral center of pressure amplitude in bipedal eyes closed (F(1,20)=6.12, p=0.023) and bipedal eyes open (F(1,12)=5.55, p=0.029) tests. In the significant interactions, amplitude increased pre to post condition in the uninterrupted sitting condition. The accumulated 2 h light-intensity treadmill desk walking ameliorated the negative effect of 6.5 h prolonged sitting on postural sway, supporting workplace treadmill desk use.

show abstract

Changes in postural sway as a function of prolonged walking

Cited by 13 publications

References 34 publications

Effect of stable and unstable load carriage on walking gait variability, dynamic stability and muscle activity of older adults

Effect of stable and unstable load carriage on walking gait variability, dynamic stability and muscle activity of older adults

Complexity-Based Measures of Postural Sway during Walking at Different Speeds and Durations Using Multiscale Entropy

Effects of Interrupting Sitting with Use of a Treadmill Desk Versus Prolonged Sitting on Postural Stability

Contact Info

Product

Resources

About