Variations of ankle-foot orthosis-constrained movements increase ankle range of movement while maintaining power output of recumbent cycling
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Puteri N.F. Hamdan
,
Juliana Usman
Abstract
Previous research investigated recumbent cycle power output (PO) from the perspective of knee and hip joint biomechanics. However, ankle-foot biomechanics and, in particular, the effect of ankle-foot orthosis (AFO)-constrained movements on cycle PO has not been widely explored. Therefore, the purpose of this study was to determine whether AFOs of a fixed position (FP) and in dorsi-plantarflexion (DPF)-, dorsiflexion (DF)- and plantarflexion (PF)-constrained movements might influence PO during voluntary recumbent cycling exercises. Twenty-five healthy individuals participated in this study. All underwent 1-min cycling at a fixed cadence for each of the AFOs. The peak and average PO of each condition were analyzed. The peak and average PO were 27.2±12.0 W (range 6–60) and 17.2±9.0 W (range 2–36), respectively, during voluntary cycling. There were no significant differences in the peak PO generated by the AFOs (p=0.083). There were also no significant differences in the average PO generated using different AFOs (p=0.063). There were no significant differences in the changes of the hip and knee joint angles with different AFOs (p=0.974 and p=1.00, respectively). However, there was a significant difference in the changes of the ankle joint angle (p<0.00). The present study observed that AFO-constrained movements did not have an influence in altering PO during voluntary recumbent cycling in healthy individuals. This finding might serve as a reference for future rehabilitative cycling protocols.
Acknowledgments
This research was fully supported by the Ministry of Higher Education, Malaysia, and the University of Malaya through High Impact Research (HIR) Grant UM.C/625/1/HIR/MOHE/ENG/39 and Postgraduate Research Grant (PPP) PG037-2015A. The authors declare no conflict of interests.
References
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Articles in the same Issue
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- Assessing regional lung mechanics by combining electrical impedance tomography and forced oscillation technique
- Head phantoms for electroencephalography and transcranial electric stimulation: a skull material study
- Variations of ankle-foot orthosis-constrained movements increase ankle range of movement while maintaining power output of recumbent cycling
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Articles in the same Issue
- Frontmatter
- Research articles
- Effect of TMS coil orientation on the spatial distribution of motor evoked potentials in an intrinsic hand muscle
- Response time of indirectly accessed gas exchange depends on measurement method
- Radiostereometric migration measurement of an uncemented Cerafit® femoral stem: 26 patients followed for 10 years
- Biomechanical comparison of a novel monocortical and two common bicortical external fixation systems regarding rigidity and dynamic stability
- Assessing regional lung mechanics by combining electrical impedance tomography and forced oscillation technique
- Head phantoms for electroencephalography and transcranial electric stimulation: a skull material study
- Variations of ankle-foot orthosis-constrained movements increase ankle range of movement while maintaining power output of recumbent cycling
- Sensitivity enhancement of a folded beam MEMS capacitive accelerometer-based microphone for fully implantable hearing application
- Validation of a novel biomechanical test bench for the knee joint with six degrees of freedom
- Bone plate-screw constructs for osteosynthesis – recommendations for standardized mechanical torsion and bending tests
- Pupillographic campimetry: an objective method to measure the visual field
