The test-retest reliability of three different hip joint centre location techniques

The hip joint centre (HJC) is essential in kinematic analyses. Three principal techniques exist for the estimation of the HJC, anatomical, functional and projection, although their test-retest has not been established. Fifteen participants ran at 4.0 m.s-1 ± 5%; 3-D kinematics of the hip and knee were collected. The HJC was defined twice using each technique (test-and-retest) and the kinematic data was applied to both. The results show significant test-retest differences in the coronal and transverse planes using the functional and projection techniques. Strong test-retest intraclass-correlations were observed for all techniques although the anatomical method was associated with the highest reliability. The anatomical technique for HJC estimation appears to be the most reliable; therefore its utilization for 3-D analyses is recommended

A comparison of several barefoot inspired footwear models in relation to barefoot and conventional running footwear

This study examined differences in kinetics and kinematics between barefoot and shod running, as well as between several barefoot inspired footwear models. Fifteen participants ran at 4.0 m/s ±5% in each footwear condition. Lower extremity kinematics in the sagittal, coronal and transverse planes were measured using an eight camera motion analysis system alongside ground reaction force parameters. Impact parameters and joint kinematics were subsequently compared using repeated measures ANOVAs. The kinetic analysis revealed that, compared to the conventional footwear, impact parameters were significantly greater in the barefoot and more minimal in barefoot inspired footwear. Running barefoot and in the minimal barefoot inspired footwear was associated with increases in flexion parameters of the knee and ankle at footstrike in relation to the conventional footwear. Finally, the results indicated that the barefoot and minimal barefoot inspired footwear were associated with greater peak eversion magnitude when compared to the conventional footwear. This study suggests that in barefoot and more minimalist barefoot inspired footwear running is associated with impact kinetics and rearfoot eversion parameters, previously linked to an increased risk of overuse injury, when compared to conventional shod running. </jats:p

The test-retest reliability of three different hip joint centre location techniques

The hip joint centre (HJC) is essential in kinematic analyses. Three principal techniques exist for the estimation of the HJC, anatomical, functional and projection, although their test-retest has not been established. Fifteen participants ran at 4.0 m.s-1 ± 5%; 3-D kinematics of the hip and knee were collected. The HJC was defined twice using each technique (test-and-retest) and the kinematic data was applied to both. The results show significant test-retest differences in the coronal and transverse planes using the functional and projection techniques. Strong test-retest intraclass-correlations were observed for all techniques although the anatomical method was associated with the highest reliability. The anatomical technique for HJC estimation appears to be the most reliable; therefore its utilization for 3-D analyses is recommended

Executive Summary of the reVITALize Initiative: Standardizing Gynecologic Data Definitions

Effective care coordination across the women\u27s health continuum is critically important. Unlike obstetric care, which tends to be more episodic and limited to pregnant and postpartum women, women receive health care, whether around pregnancy or for nonobstetric issues, in a variety of care settings by members of multiple health disciplines. Having access to standardized clinical data is imperative to providing optimal patient care. The reVITALize Gynecology Data Definitions Initiative leads a national multidisciplinary movement to offer standard gynecologic data definitions for use in written and verbal clinical communication, electronic health record data capture, quality improvement, and clinical research