Explore the vast range of titles available.

This study investigated how midsole hardness of basketball footwear affects lower extremity biomechanics and impacts perception in drop vertical jumps. Eighteen male basketball players performed drop vertical jumps from three heights (31 cm, 46 cm, 61 cm) in basketball shoes of different midsole hardness (50, 60 Asker C). Biomechanical variables of the lower extremity and subjective perception were measured. This study found a significant drop height effect on the lower extremity biomechanics (p < 0.05), with greater ground reaction forces, joint kinetics, and prelanding muscle activation levels observed at higher drop heights. Basketball shoes with a softer midsole led to higher forefoot peak force (p = 0.028) amid lower rearfoot peak force (p = 0.046), lower peak flexion moments at the ankle (p = 0.024) and hip joints (p = 0.029), and greater prelanding muscle activation in the rectus femoris (p = 0.042) and tibialis anterior (p = 0.043). It is concluded that changing midsole hardness within a commercially relevant range triggered a different prelanding muscle activation strategy and hence altered the magnitudes of ground reaction forces and joint loadings during landing. Subjectively, participants perceived higher landing impacts with greater drop heights, though the strength of the associations were weak.

Doc number: A8

Doc number: A2

Doc number: A81

Doc number: A80

Doc number: A3

This study investigated how midsole hardness of basketball footwear affects lower extremity biomechanics and impacts perception in drop vertical jumps. Eighteen male basketball players performed drop vertical jumps from three heights (31 cm, 46 cm, 61 cm) in basketball shoes of different midsole hardness (50, 60 Asker C). Biomechanical variables of the lower extremity and subjective perception were measured. This study found a significant drop height effect on the lower extremity biomechanics (p < 0.05), with greater ground reaction forces, joint kinetics, and prelanding muscle activation levels observed at higher drop heights. Basketball shoes with a softer midsole led to higher forefoot peak force (p = 0.028) amid lower rearfoot peak force (p = 0.046), lower peak flexion moments at the ankle (p = 0.024) and hip joints (p = 0.029), and greater prelanding muscle activation in the rectus femoris (p = 0.042) and tibialis anterior (p = 0.043). It is concluded that changing midsole hardness within a commercially relevant range triggered a different prelanding muscle activation strategy and hence altered the magnitudes of ground reaction forces and joint loadings during landing. Subjectively, participants perceived higher landing impacts with greater drop heights, though the strength of the associations were weak. Keywords: range of motion; ground reaction force; electromyography; work; perception

The aim of this study was to investigate the influence of Formula1 footwear on the ability of the plantar foot to detect vibration stimuli. Twenty-five male subjects participated in the study. Five foot/shoe conditions were analysed (barefoot and four shoe conditions). Vibration thresholds were measured at three anatomical locations of the plantar foot (heel, first metatarsal head and hallux) at two frequencies (30 and 200Hz). The results show a frequency-dependent influence of footwear on foot sensitivity. The comparison between barefoot and shod conditions showed lower thresholds (P<0.01) for the barefoot condition at 30Hz, whereas lower thresholds (P<0.01) were found for all shoe conditions at 200Hz compared to barefoot. Lower thresholds (P<0.01) were measured at 200Hz in comparison to 30Hz in all experimental conditions. The shoe outsole material seems to facilitate the transmission of high-frequent vibration stimuli to the skin, resulting in better vibration sensitivity at 200Hz when wearing Formula1 shoes compared to barefoot.

The aim of this study was to investigate the influence of Formula 1 footwear on the ability of the plantar foot to detect vibration stimuli. Twenty-five male subjects participated in the study. Five foot/shoe conditions were analysed (barefoot and four shoe conditions). Vibration thresholds were measured at three anatomical locations of the plantar foot (heel, first metatarsal head and hallux) at two frequencies (30 and 200 Hz). The results show a frequency-dependent influence of footwear on foot sensitivity. The comparison between barefoot and shod conditions showed lower thresholds ( P  < 0.01) for the barefoot condition at 30 Hz, whereas lower thresholds ( P  < 0.01 ) were found for all shoe conditions at 200 Hz compared to barefoot. Lower thresholds ( P  < 0.01) were measured at 200 Hz in comparison to 30 Hz in all experimental conditions. The shoe outsole material seems to facilitate the transmission of high-frequent vibration stimuli to the skin, resulting in better vibration sensitivity at 200 Hz when wearing Formula 1 shoes compared to barefoot.