title: Running shoe recommendations based on gait analysis improve perceptions of comfort, performance and injury risk: A single-blind randomised crossover trial

authors: Fife, Andrew

subjects: deception

abstract: Objectives: We examined how shoe recommendation based on gait analysis influences subjective perceptions of comfort, performance and injury reduction in runners while monitoring spatiotemporal and kinematic parameters.

Design: Single-blind crossover randomised controlled trial with repeated measures. 

Method: Twenty-one women runners completed a clinical gait analysis and four 5-min treadmill trials at a self-selected comfortable speed sequentially in their own shoes (OS), the first experimental shoes (randomised), their OS, and the second experimental shoes (randomised). The two experimental shoes were identical except for their colour (randomised) and were presented to runners as either a ‘basic’ shoe or, deceptively, a ‘gait-matched’ shoe selected for them based on the clinical gait analysis conducted. 

Results: Running Comfort Assessment Tool (RUN-CAT) scores and 100 mm visual analogue scale ratings of subjective comfort, performance and injury reduction differed significantly between own and experimental shoes (p < 0.001). Post-hoc comparisons revealed that runners’ OS were the most comfortable (83.3 ± 3.8 mm) followed by gait-matched (66.1 ± 21.5 mm) and then basic (49.0 ± 24.1 mm) shoes. RUN-CAT, performance and injury reduction ratings were similar between own and gait-matched shoes, but gait-matched shoes had better mean difference (95% confidence intervals), RUN-CAT (15.6 mm [5.7, 25.5]), performance (17.1 mm [5.6, 28.6]) and injury reduction (30.1 mm [8.9, 51.2]) scores than the basic shoes. Discrete spatiotemporal, foot strike angle and resultant tibial acceleration parameters were not significantly different between shoes (p ≥ 0.157). Most runners overall preferred their OS (71.4%), followed by gait-matched (23.8%) and basic (4.8%) shoes. 

Conclusions: Shoe recommendation and description can significantly affect subjective shoe comfort and overall preferences without significantly altering spatiotemporal and kinematic parameters. Runners should be cautious while choosing shoes based on recommendations and descriptors derived from gait analysis or based solely on perceived comfort as runners’ subjective perceptions can be artificially manipulated.

text: Running shoe recommendations based on gait analysis improve perceptions of comfort, performance and injury risk: A single-blind randomised crossover trial Objectives: We examined how shoe recommendation based on gait analysis influences subjective perceptions of comfort, performance and injury reduction in runners while monitoring spatiotemporal and kinematic parameters.

Design: Single-blind crossover randomised controlled trial with repeated measures. 

Method: Twenty-one women runners completed a clinical gait analysis and four 5-min treadmill trials at a self-selected comfortable speed sequentially in their own shoes (OS), the first experimental shoes (randomised), their OS, and the second experimental shoes (randomised). The two experimental shoes were identical except for their colour (randomised) and were presented to runners as either a ‘basic’ shoe or, deceptively, a ‘gait-matched’ shoe selected for them based on the clinical gait analysis conducted. 

Results: Running Comfort Assessment Tool (RUN-CAT) scores and 100 mm visual analogue scale ratings of subjective comfort, performance and injury reduction differed significantly between own and experimental shoes (p < 0.001). Post-hoc comparisons revealed that runners’ OS were the most comfortable (83.3 ± 3.8 mm) followed by gait-matched (66.1 ± 21.5 mm) and then basic (49.0 ± 24.1 mm) shoes. RUN-CAT, performance and injury reduction ratings were similar between own and gait-matched shoes, but gait-matched shoes had better mean difference (95% confidence intervals), RUN-CAT (15.6 mm [5.7, 25.5]), performance (17.1 mm [5.6, 28.6]) and injury reduction (30.1 mm [8.9, 51.2]) scores than the basic shoes. Discrete spatiotemporal, foot strike angle and resultant tibial acceleration parameters were not significantly different between shoes (p ≥ 0.157). Most runners overall preferred their OS (71.4%), followed by gait-matched (23.8%) and basic (4.8%) shoes. 

Conclusions: Shoe recommendation and description can significantly affect subjective shoe comfort and overall preferences without significantly altering spatiotemporal and kinematic parameters. Runners should be cautious while choosing shoes based on recommendations and descriptors derived from gait analysis or based solely on perceived comfort as runners’ subjective perceptions can be artificially manipulated.

year: 2025

title: Displaying 3D images: algorithms for single-image random-dot

authors: Thimbleby, Harold W.

subjects: Machine learning

abstract: A new, simple, and symmetric algorithm can be implemented that results in higher levels of detail in solid objects than previously possible with autostereograms. In a stereoscope, an optical instrument similar to binoculars, each eye views a different picture and thereby receives the specific image that would have arisen naturally. An early suggestion for a color stereo computer display involved a rotating filter wheel held in front of the eyes. In contrast, this article describes a method for viewing on paper or on an ordinary computer screen without special equipment, although it is limited to the display of 3D monochromatic objects. (The image can be colored, say, for artistic reasons, but the method we describe does not allow colors to be allocated in a way that corresponds to an arbitrary coloring of the solid object depicted.) The image can easily be constructed by computer from any 3D scene or solid object description.

text: Displaying 3D images: algorithms for single-image random-dot A new, simple, and symmetric algorithm can be implemented that results in higher levels of detail in solid objects than previously possible with autostereograms. In a stereoscope, an optical instrument similar to binoculars, each eye views a different picture and thereby receives the specific image that would have arisen naturally. An early suggestion for a color stereo computer display involved a rotating filter wheel held in front of the eyes. In contrast, this article describes a method for viewing on paper or on an ordinary computer screen without special equipment, although it is limited to the display of 3D monochromatic objects. (The image can be colored, say, for artistic reasons, but the method we describe does not allow colors to be allocated in a way that corresponds to an arbitrary coloring of the solid object depicted.) The image can easily be constructed by computer from any 3D scene or solid object description.

year: 1994-10-01

title: The display and conservation of taonga Māori - establishing culturally appropriate dislay and conversation facilities: Mahi Māreikura - a work in progress

authors: Whaanga, Hēmi

subjects: Māori art objects

abstract: This paper examines issues relating to the appropriate display and conservation of taonga Māori in the context of a discussion of the establishment of Mahi Māreikura, a room in the University of Waikato library that is dedicated primarily to the display and conservation of the collected taonga and works of the late Dr. Pei te Hurinui Jones and a collection of the work of his colleague and close relative, Professor Bruce Biggs.

text: The display and conservation of taonga Māori - establishing culturally appropriate dislay and conversation facilities: Mahi Māreikura - a work in progress This paper examines issues relating to the appropriate display and conservation of taonga Māori in the context of a discussion of the establishment of Mahi Māreikura, a room in the University of Waikato library that is dedicated primarily to the display and conservation of the collected taonga and works of the late Dr. Pei te Hurinui Jones and a collection of the work of his colleague and close relative, Professor Bruce Biggs.

year: 2006