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Full-Text Articles in Medicine and Health Sciences
Dynamic Variability Of Isometric Action Tremor In Precision Pinching, Tim Eakin, Waneen Spirduso, Karen Francis
Dynamic Variability Of Isometric Action Tremor In Precision Pinching, Tim Eakin, Waneen Spirduso, Karen Francis
Kinesiology (Formerly Exercise and Sport Science)
Evolutionary development of isometric force impulse frequencies, power, and the directional concordance of changes in oscillatory tremor during performance of a two-digit force regulation task was examined. Analyses compared a patient group having tremor confounding volitional force regulation with a control group having no neuropathological diagnosis. Dependent variables for tremor varied temporally and spatially, both within individual trials and across trials, across individuals, across groups, and between digits. Particularly striking findings were magnitude increases during approaches to cue markers and shifts in the concordance phase from pinching toward rigid sway patterns as the magnitude increased. Magnitudes were significantly different among …
Bioharness Multivariable Monitoring Device. Part I: Validity, James A. Johnstone, Paul A. Ford, Gerwyn Hughes, Tim Watson, Andrew T. Garrett
Bioharness Multivariable Monitoring Device. Part I: Validity, James A. Johnstone, Paul A. Ford, Gerwyn Hughes, Tim Watson, Andrew T. Garrett
Kinesiology (Formerly Exercise and Sport Science)
The BioharnessTM monitoring system may provide physiological information on human performance but there is limited information on its validity. The objective of this study was to assess the validity of all 5 BioharnessTM variables using a laboratory based treadmill protocol. 22 healthy males participated. Heart rate (HR), Breathing Frequency (BF) and Accelerometry (ACC) precision were assessed during a discontinuous incremental (0- 12 km·h-1) treadmill protocol. Infra-red skin temperature (ST) was assessed during a 45 min-1 sub-maximal cycle ergometer test, completed twice, with environmental temperature controlled at 20 ±0.1 °C and 30 ± 0.1 °C. Posture (P) was assessed using a …
Bioharness Multivariable Monitoring Device. Part Ii: Reliability, James A. Johnstone, Paul A. Ford, Gerwyn Hughes, Tim Watson, Andrew T. Garrett
Bioharness Multivariable Monitoring Device. Part Ii: Reliability, James A. Johnstone, Paul A. Ford, Gerwyn Hughes, Tim Watson, Andrew T. Garrett
Kinesiology (Formerly Exercise and Sport Science)
The BioharnessTM monitoring system may provide physiological information on human performance but the reliability of this data is fundamental for confidence in the equipment being used. The objective of this study was to assess the reliability of each of the 5 BioharnessTM variables using a treadmill based protocol. 10 healthy males participated. A between and within subject design to assess the reliability of Heart rate (HR), Breathing Frequency (BF), Accelerometry (ACC) and Infra-red skin temperature (ST) was completed via a repeated, discontinuous, incremental treadmill protocol. Posture (P) was assessed by a tilt table, moved through 160o. Between subject data reported …
Center Of Pressure Excursion During The Golf Putting Stroke In Low, Mid And High Handicap Golfers, Ashley K. Richardson, Gerwyn Hughes, Andrew C.S. Mitchell
Center Of Pressure Excursion During The Golf Putting Stroke In Low, Mid And High Handicap Golfers, Ashley K. Richardson, Gerwyn Hughes, Andrew C.S. Mitchell
Kinesiology (Formerly Exercise and Sport Science)
Golf handicap is significantly correlated to putting performance with low handicap golfers (LH) demonstrating increased putting accuracy compared with high handicap golfers (HH). Smaller center of pressure excursion (CPE) during putting has been demonstrated by LH golfers, suggesting balance is important during successful putts. The aim of this study was to examine CPE in low, mid and high handicap golfers about the mediolateral axis (ML) and anteriorposterior axis (AP). Nineteen subjects participated in the study; subjects were split into LH, mid handicap and HH groups. Subjects completed five successful 2.5m putts, standing on an RS FootScan. The LH group demonstrated …
Field Based Reliability And Validity Of The Bioharness Multivariable Monitoring Device, James A. Johnstone, Paul A. Ford, Gerwyn Hughes, Tim Watson, Andrew C.S. Mitchell, Andrew T. Garrett
Field Based Reliability And Validity Of The Bioharness Multivariable Monitoring Device, James A. Johnstone, Paul A. Ford, Gerwyn Hughes, Tim Watson, Andrew C.S. Mitchell, Andrew T. Garrett
Kinesiology (Formerly Exercise and Sport Science)
The BioharnessTM device is designed for monitoring physiological variables in free-living situations but has only been proven to be reliable and valid in a laboratory environment. Therefore, this study aimed to determine the reliability and validity of the BioharnessTM using a field based protocol. Twenty healthy males participated. Heart rate (HR), breathing frequency (BF) and accelerometry (ACC) were assessed by simultaneous measurement of two BioharnessTM devices and a test-retest of a discontinuous incremental walk-jog-run protocol (4 – 11 km·h-1) completed in a sports hall. Adopted precision of measurement devices were; HR: Polar T31 (Polar Electro), BF: Spirometer (Cortex Metalyser), ACC: …