The WalkinSense® (Tomorrow Options SA, Porto, Portugal) system was used to gather digital toe pressure data whilst wearing the two footwear conditions in the same randomised order. This validated system [24 (link)] allows for individual sensors to be applied anywhere on the foot. Eight piezoresistive force, 100 Hz sensors were individually secured with Micropore™ tape (3 M, Bracknell, UK) to the following landmarks on the left foot [9 (link)] (Fig. 2).

Walkinsense® sensor placement 1–8 on digital landmarks, as well as experimental set up for data capture. Micropore was loosely applied to secure the sensors

Medial border of the 1st metatarsophalangeal joint

Medial border of the first interphalangeal joint

Interdigital (1/2, 2/3, 3/4, 4/5)

Proximal interphalangeal joint

5th proximal interphalangeal joint

Lateral border of the 5th metatarsal head

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