Current application of continuous relative phase in running and jumping studies: A systematic review

Hu, Mingyu; Kobayashi, Toshiki; Zhou, Jin; Lam, Wing-Kai

doi:10.1016/j.gaitpost.2021.08.014

Cited by 11 publications

(15 citation statements)

References 57 publications

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“…In the shank-foot coupling, the prosthetic limb performed more inphase coordination than the intact limb. This means that the shank-foot coupling in the prosthetic limb is more synchronized than that in the intact limb, and the two segments are moving in synchrony [12]. This result accords with common sense because the shank-foot part of the prosthetic limb is a blade.…”

Section: Discussionsupporting

confidence: 72%

“…Positive values indicate that the distal segment is ahead of the proximal segment in the phase space and vice versa. A positive (negative) slope indicates that the distal (proximal) one is leading the other [11,12]. In the thigh-shank coupling, the shank was always ahead of the thigh in the phase space in both limbs as shown by the negative values throughout the entire gait cycle.…”

Section: Resultsmentioning

confidence: 99%

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Sprinting performance of individuals with unilateral transfemoral amputation: compensation strategies for lower limb coordination

Kobayashi

Hisano

et al. 2023

R. Soc. open sci.

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Understanding the sprinting patterns of individuals with unilateral transfemoral amputation (uTFA) is important for designing improved running-specific prostheses and for prosthetic gait rehabilitation. Continuous relative phase (CRP) analysis acquires clues from movement kinematics and obtains insights into the sprinting coordination of individuals with uTFA. Seven individuals with uTFA sprinted on a 40 m runway. The spatio-temporal parameters, joint and segment angles of the lower limbs were obtained, and CRP analysis was performed on thigh-shank and shank-foot couplings. Subsequently, the asymmetry ratios of the parameters were calculated. Statistical analyses were performed between the lower limbs. Significant differences in the stance time, stance phase percentage, ankle joint angles and CRP of the shank-foot coupling ( p < 0.05) were observed between the lower limbs. The primary contributor to these differences could be the structural differences between the lower limbs. Despite the presence of different coordination features in the stance and swing phases between the lower limbs, no significant difference in the coordination patterns of the thigh-shank coupling was observed. This may be a compensation strategy for achieving coordination patterns with improved symmetry between the lower limbs. The results of this study provide novel insights into the sprinting movement patterns of individuals with uTFA.

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Section: Discussionsupporting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Sprinting performance of individuals with unilateral transfemoral amputation: compensation strategies for lower limb coordination

Kobayashi

Hisano

et al. 2023

R. Soc. open sci.

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“…The excel files were then imported into a custom-written MATLAB script (version 2021a) to calculate the CRPs based on the phase angle and organise the kinematic data sets. Calculus of CRPs was based on the Hilbert transform [ 22 , 23 , 39 ].…”

Section: Methodsmentioning

confidence: 99%

“…Even though these outcome measures provide useful information and insights on gait patterns during prosthetic ambulation in individuals with transfemoral or transtibial amputation, a more advanced and holistic approach to investigating movement coordination encompasses the use of continuous relative phases (CRPs). This outcome measure is based on the dynamic systems theory explaining that movements are controlled in the neuromuscular system, generating signals to specific muscles and motor neurons [ 22 , 23 ]. CRPs quantify the movement coordination between coupling segments or joints and allows for examining the stability and resilience to perturbation based on its variability while considering temporal and spatial parameters [ 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

“…This outcome measure is based on the dynamic systems theory explaining that movements are controlled in the neuromuscular system, generating signals to specific muscles and motor neurons [ 22 , 23 ]. CRPs quantify the movement coordination between coupling segments or joints and allows for examining the stability and resilience to perturbation based on its variability while considering temporal and spatial parameters [ 22 , 23 ]. More specifically, they distinguish movement patterns based on “in-phase” and “out-phase” behaviour [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

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Continuous relative phases of walking with an articulated passive ankle–foot prosthesis in individuals with a unilateral transfemoral and transtibial amputation: an explorative case–control study

et al. 2023

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Background A mechanical ankle–foot prosthesis (Talaris Demonstrator) was developed to improve prosthetic gait in people with a lower-limb amputation. This study aims to evaluate the Talaris Demonstrator (TD) during level walking by mapping coordination patterns based on the sagittal continuous relative phase (CRP). Methods Individuals with a unilateral transtibial amputation, transfemoral amputation and able-bodied individuals completed 6 minutes of treadmill walking in consecutive blocks of 2 minutes at self-selected (SS) speed, 75% SS speed and 125% SS speed. Lower extremity kinematics were captured and hip–knee and knee–ankle CRPs were calculated. Statistical non-parametric mapping was applied and statistical significance was set at 0.05. Results The hip–knee CRP at 75% SS walking speed with the TD was larger in the amputated limb of participants with a transfemoral amputation compared to able-bodied individuals at the beginning and end of the gait cycle (p = 0.009). In people with a transtibial amputation, the knee–ankle CRP at SS and 125% SS walking speeds with the TD were smaller in the amputated limb at the beginning of the gait cycle compared to able-bodied individuals (p = 0.014 and p = 0.014, respectively). Additionally, no significant differences were found between both prostheses. However, visual interpretation indicates a potential advantage of the TD over the individual's current prosthesis. Conclusion This study provides lower-limb coordination patterns in people with a lower-limb amputation and reveals a possible beneficial effect of the TD over the individuals’ current prosthesis. Future research should include a well-sampled investigation of the adaptation process combined with the prolonged effects of the TD.

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Postural regulation and signal segmentation using clustering with TV regularization approach

Trabelsi,

Hérault,

Baillet

et al. 2025

Biomedical Signal Processing and Control

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Current application of continuous relative phase in running and jumping studies: A systematic review

Cited by 11 publications

References 57 publications

Sprinting performance of individuals with unilateral transfemoral amputation: compensation strategies for lower limb coordination

Sprinting performance of individuals with unilateral transfemoral amputation: compensation strategies for lower limb coordination

Continuous relative phases of walking with an articulated passive ankle–foot prosthesis in individuals with a unilateral transfemoral and transtibial amputation: an explorative case–control study

Postural regulation and signal segmentation using clustering with TV regularization approach

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