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https://www.readbyqxmd.com/read/29112053/concurrent-validity-and-reliability-of-a-linear-positional-transducer-and-an-accelerometer-to-measure-punch-characteristics
#1
Conor Lambert, Belinda R Beck, Benjamin K Weeks
Lambert, C, Beck, BR, and Weeks, BK. Concurrent validity and reliability of a linear positional transducer and an accelerometer to measure punch characteristics. J Strength Cond Res XX(X): 000-000, 2017-Punch speed is an important factor in the sport of boxing, and its measurement has important implications for monitoring training progression and outcomes. The aim of the current study was to establish the concurrent validity and reliability of a linear position transducer and an accelerometer for the quantification of punch characteristics in untrained adults...
November 1, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28182500/validity-of-various-methods-for-determining-velocity-force-and-power-in-the-back-squat
#2
Harry G Banyard, Ken Nosaka, Kimitake Sato, G Gregory Haff
PURPOSE: This investigation examined the validity of two kinematic systems for assessing mean velocity (MV), peak velocity (PV), mean force (MF), peak force (PF), mean power (MP), and peak power (PP) during the full depth free-weight back squat performed with maximal concentric effort. METHODS: Ten strength-trained men (26.1±3.0 y; 1.81±0.07 m; 82.0±10.6 kg) performed three 1-repetition maximum (1RM) trials on three separate days, encompassing lifts performed at six relative intensities including 20, 40, 60, 80, 90, and 100% of 1RM...
February 9, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/24650275/the-effect-of-an-acute-antioxidant-supplementation-compared-with-placebo-on-performance-and-hormonal-response-during-a-high-volume-resistance-training-session
#3
James Ackerman, Tom Clifford, Lars R McNaughton, David J Bentley
Antioxidant supplementation is known to increase human endogenous antioxidant (AOX) capacity providing a means of blunting exercise induced reactive oxygen species (ROS). The purpose of this study was to compare the effects of a single acute dose of an AOX (vs blinded placebo) on muscle contractile performance and hormonal responses to a single bout of lower limb 'hypertrophic' resistance training (RT). Fifteen resistance trained subjects (age 23 ± 4 years: body mass 86 ± 6 kg) volunteered to participate in the study...
2014: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/21380970/validating-two-systems-for-estimating-force-and-power
#4
COMPARATIVE STUDY
B T Crewther, L P Kilduff, D J Cunningham, C Cook, N Owen, G-Z Yang
This study examined the validity of 2 kinematic systems for estimating force and power during squat jumps. 12 weight-trained males each performed single repetition squat jumps with a 20-kg, 40-kg, 60-kg and 80-kg load on a Kistler portable force plate. A commercial linear position transducer (Gymaware [GYM]) and accelerometer (Myotest® [MYO]) were attached to the bar to assess concentric peak force (PF) and peak power (PP). Across all loads tested, the GYM and MYO estimates of PF and PP were moderately to strongly correlated ( P≤0...
April 2011: International Journal of Sports Medicine
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