title: Duty factor is a viable measure to classify spontaneous running forms

authors: Patoz, Aurélien

subjects: biomechanics

abstract: Runners were classified using two different methods based on their spontaneous running form: (1) subjectively using the V®score from the Volodalen® scale, leading to terrestrial and aerial groups; and (2) objectively using the duty factor (DF), leading to high (DFhigh) and low (DFlow) DF groups. This study aimed to compare these two classification schemes. Eighty-nine runners were divided in two groups using the V®score (VOL groups) and were also ranked according to their DF. They ran on a treadmill at 12 km·h⁻¹ with simultaneous recording of running kinematics, using a three-dimensional motion capture system. DF was computed from data as the ratio of ground contact time to stride time. The agreement (95% confidence interval) between VOL and DF groups was 79.8% (69.9%, 87.6%), with relatively high sensitivity (81.6% (68.0%, 91.2%)) and specificity (77.5% (61.6%, 89.2%)). Our results suggest that the DF and V®score reflect similar constructs and lead to similar subgroupings of spontaneous running form (aerial runners if DF < 27.6% and terrestrial runners if DF > 28.8% at 12 km·h⁻¹). These results suggest that DF could be a useful objective measure to monitor real-time changes in spontaneous running form using wearable technology. As a forward-looking statement, spontaneous changes in running form during racing or training could assist in identifying fatigue or changes in environmental conditions, allowing for a better understanding of runners.

text: Duty factor is a viable measure to classify spontaneous running forms Runners were classified using two different methods based on their spontaneous running form: (1) subjectively using the V®score from the Volodalen® scale, leading to terrestrial and aerial groups; and (2) objectively using the duty factor (DF), leading to high (DFhigh) and low (DFlow) DF groups. This study aimed to compare these two classification schemes. Eighty-nine runners were divided in two groups using the V®score (VOL groups) and were also ranked according to their DF. They ran on a treadmill at 12 km·h⁻¹ with simultaneous recording of running kinematics, using a three-dimensional motion capture system. DF was computed from data as the ratio of ground contact time to stride time. The agreement (95% confidence interval) between VOL and DF groups was 79.8% (69.9%, 87.6%), with relatively high sensitivity (81.6% (68.0%, 91.2%)) and specificity (77.5% (61.6%, 89.2%)). Our results suggest that the DF and V®score reflect similar constructs and lead to similar subgroupings of spontaneous running form (aerial runners if DF < 27.6% and terrestrial runners if DF > 28.8% at 12 km·h⁻¹). These results suggest that DF could be a useful objective measure to monitor real-time changes in spontaneous running form using wearable technology. As a forward-looking statement, spontaneous changes in running form during racing or training could assist in identifying fatigue or changes in environmental conditions, allowing for a better understanding of runners.

year: 2019

title: The postcolonial university

authors: Peters, Michael A.

abstract: Derrida is, perhaps, the foremost philosopher of the humanities and of its place in the university. Over the long period of his career he has been concerned with the fate, status, place and contribution of the humanities. Through his deconstructive readings and writings he has done much not only to reinvent the Western tradition by attending closely to those texts which constitute it but also he has redefined its procedures and protocols, questioning and commenting upon the relationship between commentary and interpretation, the practice of quotation, the delimitation of a work and its singularity, its signature, and its context – the whole form of life of literary culture, together with textual practices and conventions that shape it. From his very early work he has occupied a marginal in-between space –simultaneously, textual, literary, philosophical, and political – a space that permitted him a freedom to question, to speculate and to draw new limits to humanitas. Derrida has demonstrated his power to reconceptualize and to reimagine the humanities in the space of the contemporary university. This paper discusses Derrida’s tasks for the new humanities (Trifonas & Peters, 2005).

text: The postcolonial university Derrida is, perhaps, the foremost philosopher of the humanities and of its place in the university. Over the long period of his career he has been concerned with the fate, status, place and contribution of the humanities. Through his deconstructive readings and writings he has done much not only to reinvent the Western tradition by attending closely to those texts which constitute it but also he has redefined its procedures and protocols, questioning and commenting upon the relationship between commentary and interpretation, the practice of quotation, the delimitation of a work and its singularity, its signature, and its context – the whole form of life of literary culture, together with textual practices and conventions that shape it. From his very early work he has occupied a marginal in-between space –simultaneously, textual, literary, philosophical, and political – a space that permitted him a freedom to question, to speculate and to draw new limits to humanitas. Derrida has demonstrated his power to reconceptualize and to reimagine the humanities in the space of the contemporary university. This paper discusses Derrida’s tasks for the new humanities (Trifonas & Peters, 2005).

year: 2016

title: The relevance of discourse analysis to the teaching and learning of te reo Māori: A text-centred example

authors: Greensill, Hine-iti-moana

subjects: Māori language

abstract: In this paper, I analyse a single text written in te reo Māori in terms of two different approaches derived from discourse analysis (discourse macro-patterning and discourse relations and their signalling) in order to demonstrate the importance of deriving a discourse-centred methodology for teaching learners of Māori what is involved in interpreting and creating coherent discourses.

text: The relevance of discourse analysis to the teaching and learning of te reo Māori: A text-centred example In this paper, I analyse a single text written in te reo Māori in terms of two different approaches derived from discourse analysis (discourse macro-patterning and discourse relations and their signalling) in order to demonstrate the importance of deriving a discourse-centred methodology for teaching learners of Māori what is involved in interpreting and creating coherent discourses.

year: 2007