Publications by authors named "Jack Lineham"
Article Synopsis
- - This study explored how different foot positions affect the mechanics of the ankle joint and vertical ground reaction forces during jump landings in professional ballet dancers across various starting positions.
- - Using a high-tech motion capture system, researchers analyzed the jumps of 27 dancers, looking specifically at ankle mechanics, landing forces, and jump height across positions like parallel, first, second, fourth, and fifth.
- - Results showed that ankle mechanics, especially power in the transverse plane during jumps in the fourth position, significantly impacted performance, suggesting that dancers should regain ankle motion before jumping in those positions post-injury, and that specific training for ankle stability is important.
This study aimed to investigate the associations between peak plantarflexion ankle joint moments and vertical ground reaction forces (vGRF) during jump landings, and static ankle dorsiflexion range of motion (ROM), three-dimensional ankle excursions, and lower extremity strength in professional ballet dancers. Twenty-seven professional ballet dancers volunteered to participate (men = 14, women = 13). Participants attended one data collection session to measure dorsiflexion ROM and isometric lower extremity strength.
View Article and Find Full Text PDFThis study aimed to determine the within- and between-session reliability of ankle mechanics and vertical ground reaction forces (vGRF) during jump landings in turned-out and parallel foot positions in professional ballet dancers. Twenty-four professional ballet dancers (men = 13, women = 11) attended two data collection sessions where they completed five maximal countermovement jumps in each foot position. The ankle joint mechanics and vGRF of the right limb were recorded via a seven-camera motion capture system and one force platform.
View Article and Find Full Text PDFThe Effects of Compression-Garment Pressure on Recovery After Strenuous Exercise.
Int J Sports Physiol Perform
September 2017
Unlabelled: Compression garments are frequently used to facilitate recovery from strenuous exercise.
Purpose: To identify the effects of 2 different grades of compression garment on recovery indices after strenuous exercise.
Methods: Forty-five recreationally active participants (n = 26 male and n = 19 female) completed an eccentric-exercise protocol consisting of 100 drop jumps, after which they were matched for body mass and randomly but equally assigned to a high-compression pressure (HI) group, a low-compression pressure (LOW) group, or a sham ultrasound group (SHAM).