Age and walking speed effects on muscle recruitment in gait termination

Tirosh, Oren; Sparrow, W.A.

doi:10.1016/j.gaitpost.2004.03.002

Cited by 62 publications

(48 citation statements)

References 8 publications

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“…Walking speed has previously been shown to influence muscle activity patterns and strategies used for gait termination [17]. To determine whether normalization of the temporo-spatial variables to walking velocity was required, Pearson's bivariate correlations were performed.…”

Section: Discussionmentioning

confidence: 99%

Rapid gait termination: Effects of age, walking surfaces and footwear characteristics

et al. 2009

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Section: Discussionmentioning

confidence: 99%

Rapid gait termination: Effects of age, walking surfaces and footwear characteristics

et al. 2009

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“…They were administered in the following order: (1) PEQ [2], (2) self-reported number of falls, (3) self-reported number of stumbles, (4) 75 m SSWS on even terrain [22][23], (5) 75 m FPWS on even terrain [22][23][24][25], (6) 38 m FPWS on uneven terrain [22][23][24][25], (7) 6 m FPWS on even terrain [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38], (8) stair descent test (MRPP) [21], and (9) knee preference [1].…”

Section: Evaluative Measuresmentioning

confidence: 99%

“…Second, at a distance of 6 m, gait initiation and termination occur in proximity, placing primary emphasis on these more complex aspects of gait. Numerous studies have demonstrated that in the presence of neuromusculoskeletal pathology, changes in motor planning, step length, push-off force, and other parameters adversely affect the initiation and termination of gait [26][27][28][29][30][31][32][33][34][35][36][37][38][41][42][43]. Finally, 6 m is the approximate distance of two lanes of traffic.…”

Section: Fastest Possible Walking Speed: 6 M On Even Terrainmentioning

confidence: 99%

Comparison of nonmicroprocessor knee mechanism versus C-Leg on Prosthesis Evaluation Questionnaire, stumbles, falls, walking tests, stair descent, and knee preference

Kahle

Highsmith²,

Hubbard³

2008

JRRD

185

283

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Abstract-This study compared subjects' performance with a nonmicroprocessor knee mechanism (NMKM) versus a C-Leg on nine clinically repeatable evaluative measures. We recorded data on subjects' performance while they used an accommodated NMKM and, following a 90-day accommodation period, the C-Leg in a convenience sample of 19 transfemoral (TF) amputees (mean age 51 +/-19) from an outpatient prosthetic clinic. We found that use of the C-Leg improved function in all outcomes: (1) Prosthesis Evaluation Questionnaire scores increased 20% (p = 0.007), (2) stumbles decreased 59% (p = 0.006), (3) falls decreased 64% (p = 0.03), (4) 75 m selfselected walking speed on even terrain improved 15% (p = 0.03), (5) 75 m fastest possible walking speed (FPWS) on even terrain improved 12% (p = 0.005), (6) 38 m FPWS on uneven terrain improved 21% (p < 0.001), (7) 6 m FPWS on even terrain improved 17% (p = 0.001), (8) Montreal Rehabilitation Performance Profile Performance Composite Scores for stair descent increased for 12 subjects, and (9) the C-Leg was preferred over the NMKM by 14 subjects. Four limited community ambulators (Medicare Functional Classification Level [MFCL] K2) increased their ambulatory functional level to unlimited community ambulation (MFCL K3). Objective evaluative clinical measures are vital for justifying the medical necessity of knee mechanisms for TF amputees. Use of the C-Leg improves performance and quality of life and can increase MFCL and community ambulation level.

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“…Compared to normal walking the braking GRF is increased in the final stance phase [6][7][8]. A large burst of soleus muscle activity and reduced activation in the tibialis anterior muscle of the leading limb bring the foot flat to the ground [5,7,9,10]. The vasti and gluteus medius muscles are activated, respectively, to extend the knee and to prevent the trunk from bending forward.…”

mentioning

confidence: 99%

Gait termination in lower limb amputees

et al. 2008

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Objective: To study the limitations in function and adjustment strategies of lower limb amputees in gait termination. Design: Observational cohort study. Setting: University Medical Centre. Participants: Unilateral transfemoral and transtibial amputees, and able-bodied control subjects. Main outcome measures: Leading limb preference, temporal variables, lower limb joint angles, ground reaction forces, and centre of pressure shift.Results: Compared to able-bodied subjects, amputees showed a decreased peak braking ground reaction force in the prosthetic limb, no anterior centre of pressure shift during leading with the prosthetic limb and an increased mediolateral centre of pressure shift. Amputees used several adjustment strategies to compensate for the limitations in function; leading limb preference for the non-affected limb, longer production of braking force in the non-affected limb, decreased gait termination velocity and more weight-bearing on the non-affected limb. Conclusion: Limitations in function and adjustment strategies were mainly similar in transfemoral and transtibial amputees. Due to the lack of active ankle function, amputees were not able to increase the braking force and to shift the centre of pressure anteriorly. Leading with the non-affected limb is favourable for adequate deceleration and balance control, but in daily life not always applicable. It is important that amputees are trained in gait termination during rehabilitation and prosthetic design should focus on a more active role of the prosthetic foot and knee. #

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Age and walking speed effects on muscle recruitment in gait termination

Cited by 62 publications

References 8 publications

Rapid gait termination: Effects of age, walking surfaces and footwear characteristics

Rapid gait termination: Effects of age, walking surfaces and footwear characteristics

Comparison of nonmicroprocessor knee mechanism versus C-Leg on Prosthesis Evaluation Questionnaire, stumbles, falls, walking tests, stair descent, and knee preference

Gait termination in lower limb amputees

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