Squat-to-reach task in older and young adults: Kinematic and electromyographic analyses

Kuo, Fang-Chuan; Kao, Wen-Pin; Chen, Hsiu-I; Hong, Chang‐Zern

doi:10.1016/j.gaitpost.2010.10.088

Cited by 26 publications

(16 citation statements)

References 22 publications

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“…The HA motions in the current study showed lower muscle activations than the functional squatting and reaching, although the muscle activation pattern was similar (Kuo et al, 2011). This difference is attributed to the fact that squatting of HAs contained one more phase (i.e., squatting and standing) than functional squatting and reaching, so that a greater numeric value of Table 9.…”

Section: Musculoskeletal System Movement To Maintain Balance Stabilitmentioning

confidence: 48%

“…These phase definitions were similar to balance improvement training motions (Carty et al, 2011;Kuo et al, 2011). Down-ward reaching is a functional task used for balance and postural control training and clinical assessment of the risk of falls.…”

Section: Nsmentioning

confidence: 99%

“…A portable 16-channel surface EMG (Desktop DTS; Noraxon, Scottsdale, AZ) was used for the kinetic analysis of muscle activation. A total of 16 axial and lower limb muscles that have been shown previously to be functionally agonistic during HA and functional activities of daily living were selected (Kuo et al, 2011;Park et al, 2014). Bipolar surface EMG electrodes Horticultural activity Descriptions Raking 1) Standing with the feet shoulder width apart, holding onto the rake (0.9 kg) by placing the right hand at the end of the stick; 2) stepping forward with the left foot ahead of the right foot, holding the stick one third from the end; 3) reaching out as far as possible with the rake to position the blade properly at the horticultural task pot; 4) striking the rake onto the ground toward the front of the subject; 5) stepping back with the left foot.…”

Section: Measurementsmentioning

confidence: 99%

“…It is believed that returning to standing and reaching the arm can be performed successfully only when the trunk, pelvis, and hip joints are fixed. Therefore, the longissimus muscle of the thorax and the rectus abdominis, which support the trunk joint, seemed to be highly activated (Kuo et al, 2011;McGill, 1995).…”

Section: Horticultural Activitymentioning

confidence: 99%

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Kinematic and Kinetic Analysis of Horticultural Activities for Postural Control and Balance Training

Lee¹,

Park²,

Moon³

et al. 2018

horts

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The objective of this study was to analyze the kinematic and kinetic characteristics of eight horticultural activities (HAs): digging, raking, sowing seeds, transplanting plants, near-distance weeding, far-distance weeding, low-height harvesting, and high-height harvesting. Twenty-four male university students (average age, 23.4 ± 2.9 years) participated in this study. Balance and postural stability factors [e.g., center of mass (CoM), ground reaction force (GRF), and center of pressure (CoP)] and postural control strategy factors (e.g., joint angles, joint moment, and muscle activation of the trunk and lower limbs) were assessed using a three-dimensional (3D) motion analysis system, force platform, and surface electromyography. A total of eight HAs were distinguished in three motions: stepping, squatting, and stooping. In performing the eight HAs, CoM shifting occurred and balance of the subjects became unstable. These forced compensatory motor strategies to maintain balance by exertion of GRF from the two feet, movement of the CoP, and a combination of musculoskeletal system exercises of the lower limbs and trunk occurred. The kinematic and kinetic characteristics of lower limb motions were significantly different across the HAs (P = 0.05). The kinematic and kinetic characteristics of HAs were similar to those of the functional tasks during balance improvement training motions and activities of daily living. The current study provides useful reference data for developing a horticultural therapy program for balance improvement in patients who need physical rehabilitation. z

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Section: Musculoskeletal System Movement To Maintain Balance Stabilitmentioning

confidence: 48%

Section: Nsmentioning

confidence: 99%

Section: Measurementsmentioning

confidence: 99%

Section: Horticultural Activitymentioning

confidence: 99%

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Kinematic and Kinetic Analysis of Horticultural Activities for Postural Control and Balance Training

Lee¹,

Park²,

Moon³

et al. 2018

horts

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“…The Authors' point of view in this paper is that the knee flexion is a parameter relevant to evaluate the subject level of confidence with respect to his/her functional ability in managing a demanding task. In this study, besides the descent and the ascent, often described in relation to squat 6,11,20,22 , a third phase, the maintenance was identified. Its duration, particularly long for TKA group suggests that this kind of patients held the knee flexed probably to stabilize the balance before to start the ascent.…”

Section: Discussionmentioning

confidence: 89%

Assessment of patient functional performance in different knee arthroplasty designs during unconstrained squat

Verdini

Zara

Leo

et al. 2017

MLTJ

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SummaryBackground: In this paper, squat named by Authors unconstrained because performed without constrains related to feet position, speed, knee maximum angle to be reached, was tested as motor task revealing differences in functional performance after knee arthroplasty. It involves large joints ranges of motion, does not compromise joint safety and requires accurate control strategies to maintain balance. Methods: Motion capture techniques were used to study squat on a healthy control group (CTR) and on three groups, each characterised by a specific knee arthroplasty design: a Total Knee Arthroplasty (TKA), a Mobile Bearing and a Fixed Bearing Unicompartmental Knee Arthroplasty (respectively MBUA and FBUA). Squat was analysed during descent, maintenance and ascent phase and described by speed, angular kinematics of lower and upper body, the Center of Pressure (CoP) trajectory and muscle activation timing of quadriceps and biceps femoris. Results: Compared to CTR, for TKA and MBUA knee maximum flexion was lower, vertical speed during descent and ascent reduced and the duration of whole movement was longer. CoP mean distance was higher for all arthroplasty groups during descent as higher was, CoP mean velocity for MBUA and TKA during ascent and descent. Conclusions: Unconstrained squat is able to reveal differences in the functional performance among control and arthroplasty groups and between different arthroplasty designs. Considering the similarity index calculated for the variables showing statistically significance, FBUA performance appears to be closest to that of the CTR group. Level of evidence: III a.KEY WORDS: angular kinematics, Center of pressure, electromyography, unconstrained squat, unicompartmental knee arthroplasty, total knee arthroplasty.

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Funktionelles Beinachsenbelastungstraining

Spirgi-Gantert¹,

Bürge²

2016

FBL Klein-Vogelbach Functional Kinetics: Ballübungen

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Squat-to-reach task in older and young adults: Kinematic and electromyographic analyses

Cited by 26 publications

References 22 publications

Kinematic and Kinetic Analysis of Horticultural Activities for Postural Control and Balance Training

Kinematic and Kinetic Analysis of Horticultural Activities for Postural Control and Balance Training

Assessment of patient functional performance in different knee arthroplasty designs during unconstrained squat

Funktionelles Beinachsenbelastungstraining

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