Limits...
Heel strike angle and foot angular velocity in the sagittal plane during running in different shoe conditions

View Article: PubMed Central - HTML

AUTOMATICALLY GENERATED EXCERPT
Please rate it.

Runners change their running style, e.g. heel strike strategy, to adapt to different shoe conditions... Various mechanisms for adaptation are discussed... Alteration of stiffness of the ankle joint at heel strike by dorsiflexion or plantarflexion of the foot seems to be disregarded as mechanism of adaptation... In this study, alterations of heel strike angle (HSA) and plantarflexion velocity (PFV) in the sagittal plane due to wearing different shoe conditions was examined... Twenty-four male, injury-free recreational runners (age: 24.8 ± 2.5 years, height: 177.7 ± 5.8 cm, weight: 73.1 ± 7.1 kg) participated in this study... Three running shoes differing in heel height and cushioning properties were used: S1 = low heel, less cushioning; S2 = low heel, medium cushioning; S3 = high heel, medium cushioning... Comparing progression of heel angle around touchdown ± 30 ms increased cushioning conditions (S2, S3) resulted in higher HSA (Figure 2)... HSA and PFV show an individual range from 15.3° to 36.1° and 377°/s to 664°/s between subjects and shoes... Low intraindividual variability of subjects was found for all shoe conditions (COVØHSA = 5.4%, COVØPFV = 5.6%)... No correlation was observed between HSA, PFV, and the kinetic impact parameters for individual subjects... Significant differences of HSA and PFV between shoes support the assumption that heel strike angle and plantarflexion velocity in the sagittal plane are used to adapt to different shoe conditions independent from impact parameters... Furthermore, due to small intraindividual variability, it seems that magnitude of HSA and PFV is a characteristic feature of individual running style.

No MeSH data available.


Related in: MedlinePlus

Progression of heel angle.
© Copyright Policy
Related In: Results  -  Collection


getmorefigures.php?uid=PMC2562095&req=5

Figure 2: Progression of heel angle.

Mentions: For kinematic and kinetic parameters highly significant differences were found between shoe conditions (Figure 1). Comparing progression of heel angle around touchdown ± 30 ms increased cushioning conditions (S2, S3) resulted in higher HSA (Figure 2).


Heel strike angle and foot angular velocity in the sagittal plane during running in different shoe conditions
Progression of heel angle.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2562095&req=5

Figure 2: Progression of heel angle.
Mentions: For kinematic and kinetic parameters highly significant differences were found between shoe conditions (Figure 1). Comparing progression of heel angle around touchdown ± 30 ms increased cushioning conditions (S2, S3) resulted in higher HSA (Figure 2).

View Article: PubMed Central - HTML

AUTOMATICALLY GENERATED EXCERPT
Please rate it.

Runners change their running style, e.g. heel strike strategy, to adapt to different shoe conditions... Various mechanisms for adaptation are discussed... Alteration of stiffness of the ankle joint at heel strike by dorsiflexion or plantarflexion of the foot seems to be disregarded as mechanism of adaptation... In this study, alterations of heel strike angle (HSA) and plantarflexion velocity (PFV) in the sagittal plane due to wearing different shoe conditions was examined... Twenty-four male, injury-free recreational runners (age: 24.8 ± 2.5 years, height: 177.7 ± 5.8 cm, weight: 73.1 ± 7.1 kg) participated in this study... Three running shoes differing in heel height and cushioning properties were used: S1 = low heel, less cushioning; S2 = low heel, medium cushioning; S3 = high heel, medium cushioning... Comparing progression of heel angle around touchdown ± 30 ms increased cushioning conditions (S2, S3) resulted in higher HSA (Figure 2)... HSA and PFV show an individual range from 15.3° to 36.1° and 377°/s to 664°/s between subjects and shoes... Low intraindividual variability of subjects was found for all shoe conditions (COVØHSA = 5.4%, COVØPFV = 5.6%)... No correlation was observed between HSA, PFV, and the kinetic impact parameters for individual subjects... Significant differences of HSA and PFV between shoes support the assumption that heel strike angle and plantarflexion velocity in the sagittal plane are used to adapt to different shoe conditions independent from impact parameters... Furthermore, due to small intraindividual variability, it seems that magnitude of HSA and PFV is a characteristic feature of individual running style.

No MeSH data available.


Related in: MedlinePlus