Effects of Tai Chi Training on Obstacle Avoidance and Gait Initiation by Older People

Kim, Hyeong-Dong; Je, Hyun Dong; Jeong, Ji Hoon; Ma, Sang-Yeol

doi:10.1589/jpts.25.193

Cited by 5 publications

(3 citation statements)

References 60 publications

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“…However, previous studies on the effects of TCC training on obstacle-crossing performance in the elderly are limited. Only a limited number of studies investigated the effects of TCC on temporospatial parameters and balance control during obstaclecrossing (Ramachandran et al, 2007;Kim, 2009;Kim et al, 2013;Chang et al, 2015). It remains unclear whether TCC training would improve the lower limb inter-joint coordination and endpoint control critical for a safe and successful obstacle-crossing in the elderly.…”

Section: Introductionmentioning

confidence: 99%

Effects of Tai-Chi Chuan Practice on Patterns and Stability of Lower Limb Inter-Joint Coordination During Obstructed Gait in the Elderly

Kuo

Chen

Wang

et al. 2021

Front. Bioeng. Biotechnol.

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Losing balance or tripping during obstacle-crossing is one of the most frequent causes of falls in the elderly. As a low speed, low impact exercise, Tai Chi Chuan (TCC) can be promising in helping the elderly develop strategies for improved balance, inter-joint coordination, and end-point control during obstacle-crossing. This study investigates the effects of TCC training on the patterns and variability of the lower-limb inter-joint coordination during obstacle-crossing in the elderly. Fifteen older TCC practitioners and 15 healthy controls crossed obstacles of three different heights, while sagittal angles (x) and angular velocities (x′) of the hips, knees and ankles were measured and their phase angles obtained. The continuous relative phases (CRP) of the hip-knee and knee-ankle coordination were also calculated. The standard deviations of the CRP curve points were averaged to obtain deviation phase (DP) values for the stance and swing phases. The TCC group was found to cross obstacles with increased leading and trailing toe-clearances with unaltered CRP values when the swing toe was above the obstacle. Long-term TCC training altered the patterns and magnitudes of the CRPs primarily over double-limb support and significantly reduced the variabilities of leading knee-ankle and trailing hip-knee and knee-ankle CRP curves over the crossing cycle, regardless of obstacle height. The current results suggest that long-term TCC practice was helpful for a crossing strategy with significantly increased foot-obstacle clearances and reduced variability of the way the motions of the lower limb joints are coordinated during obstacle-crossing. These benefits may be explained by the long-lasting effects of continuous practice of the slow movement patterns emphasizing between-limb transfer of body weight in TCC.

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Section: Introductionmentioning

confidence: 99%

Effects of Tai-Chi Chuan Practice on Patterns and Stability of Lower Limb Inter-Joint Coordination During Obstructed Gait in the Elderly

Kuo

Chen

Wang

et al. 2021

Front. Bioeng. Biotechnol.

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“…Significant correlations between kinetic events, time to stepping-limb TO, amplitude and duration of TA, and intended velocity of GI have been reported 5 ) . Similar patterns of modulation seem to occur when stepping to a new height 15 ) or over an obstacle 7 , 16 , 17 , 18 , 19 , 20 , 21 ) .…”

Section: Introductionmentioning

confidence: 68%

The influence of accuracy constraints on EMG and kinetic variables during gait initiation

Kim

Brunt

2015

J Phys Ther Sci

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[Purpose] This study investigated the effects of accuracy constraints (targets) placed on the stepping-limb heel-strike (HS) on the electromyogram (EMG) and ground reaction forces (GRFs) during gait initiation. [Subjects and Methods] Twenty healthy subjects (29.2 ± 2.9 years) were asked to begin walking or stepping over a 10-cm-high obstacle at a fast speed. A 3-cm-diameter target was placed on the ground to dictate the position and accuracy of the stepping-limb HS. [Results] The results showed that the initiation velocity increase in the no-target conditions was due to modulation of the stance- and stepping-limb GRFs and a corresponding increase in the tibialis anterior (TA) activities of both limbs before stepping-limb toe-off. This was achieved by significantly increasing the stepping- and stance-limb TAEMG1 (determined between the onset of movement and time to peak anteroposterior (A-P) GRF of the stepping- and stance- limb) for the no-target conditions. It seems, therefore, that TAEMG1 and the slope to stepping-limb peak A-P GRF contributed to the intended velocity of initiation. [Conclusion] These data indicate that gait initiation and/or stepping over an obstacle may prove to be tasks by which motor control can be measured. The present study provides insight into the working mechanisms of the stepping and stance limbs and shows a clear need to further investigate whether the intact or affected limb should be used to initiate gait during rehabilitation and prosthetic training.

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“…Ultimately, lower extremity muscle activation patterns during TW would likely affect the position of the limb, and thereby the position of the moment arms that contribute to external knee joint moments. These control strategies during TW could be enhanced with training 11 , 12 ) and feedback on limb positioning in space or the magnitude of loading experienced throughout the stance phase.…”

Section: Discussionmentioning

confidence: 99%

Biomechanical comparison of frontal plane knee joint moment arms during normal and Tai Chi walking

et al. 2015

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[Purpose] Medial knee osteoarthritis, a degenerative joint disease, affects adults. The external knee adduction moment, a surrogate knee-loading measure, has clinical implications for knee osteoarthritis patients. Tai Chi is a promising intervention for pain alleviation in knee osteoarthritis; however, the characteristics of external knee adduction moment during Tai Chi have not been established. [Subjects and Methods] During normal and Tai Chi walking, a gait analysis was performed to compare the external knee adduction moment moment-arm characteristics and paired t-tests to compare moment-arm magnitudes. [Results] A significant difference was observed in the average lateral direction of moment-arm magnitude during Tai Chi walking (−0.0239 ± 0.011 m) compared to that during normal walking (−0.0057 ± 0.004 m). No significant difference was found between conditions in average medial direction of moment-arm magnitude (normal walking: 0.0143 ± 0.010 m; Tai Chi walking: 0.0098 ± 0.014 m). [Conclusion] Tai Chi walking produced a larger peak lateral moment-arm value than normal walking during the stance phase, whereas Tai Chi walking and normal walking peak medial moment-arm values were similar, suggesting that medial knee joint loading may be avoided during Tai Chi walking.

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Effects of Tai Chi Training on Obstacle Avoidance and Gait Initiation by Older People

Cited by 5 publications

References 60 publications

Effects of Tai-Chi Chuan Practice on Patterns and Stability of Lower Limb Inter-Joint Coordination During Obstructed Gait in the Elderly

Effects of Tai-Chi Chuan Practice on Patterns and Stability of Lower Limb Inter-Joint Coordination During Obstructed Gait in the Elderly

The influence of accuracy constraints on EMG and kinetic variables during gait initiation

Biomechanical comparison of frontal plane knee joint moment arms during normal and Tai Chi walking

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