The effects of ageing on muscle strength and function: A review of the literature

Outcome measures for erectile dysfunction 2: evaluation

This article, the second of two parts, discusses and evaluates the range of outcome measures for erectile dysfunction (ED) identified from the literature review in part one (Vol 11(1): 54-64). The literature review identified 14 subjective and 12 objective measures. These outcome measures are needed for the components: rigidity, vascular flow, nerve conductivity, intracavernosus muscle power, partner satisfaction and quality of life. Instruments selected should provide good validity, reliability and responsiveness. Quick, simple, inexpensive and efficient outcome measures can be used by nurses.

Concentric and eccentric isokinetic assessment of flexor-extensor torque ratios at the hip, knee, and ankle in a sample population of healthy subjects

OBJECTIVE

To establish the relationship between the flexor/extensor torque ratios in the hip, knee, and ankle.

DESIGN

Case series.

SETTING

Laboratory of a university rehabilitation department.

PARTICIPANTS

From a group of 158 healthy volunteers, 138 subjects completed all the tests in concentric mode, and 65 in eccentric mode.

MAIN OUTCOME MEASURE

The flexor/extensor torque ratios of the hip, knee, and ankle were analyzed by means of isokinetic concentric and eccentric tests. Analysis of variance was carried out to compare the mean values of the ratios obtained between the male and female populations and between the right and left sides, and correlation analysis between the values of the joints.

RESULTS

The flexor/extensor torque ratios differed significantly according to sex and angular velocities, but not according to side except for the ankle. No significant relationship was found between the flexor/extensor torque ratios in the hip, knee, and ankle joints.

CONCLUSIONS

The flexor-extensor torque ratio of the knee and hip can be used as a reference point during rehabilitation of the contralateral side. Our results demonstrating the absence of correlation between the flexor/extensor torque ratio in each joint of the same limb, however, call for further longitudinal studies to be made under specific circumstances, such as training or immobilization of one joint, to follow the course of agonist/antagonist ratios and the synergistic activity between the joints.

Parametric and non-parametric measures in the assessment of knee and hip osteoarthritis: interobserver reliability and correlation with radiology

The aim of this study was to evaluate the interobserver reliability of parametric and non-parametric variables in the clinical assessment of hip and knee osteoarthritis (OA). Three rheumatologists examined 49 patients with different radiological stages of OA using different assessment tools such as a tape measure, a goniometer, a plurimeter and a hand-held pull gauge. The reliabilities of parametric variables calculated by analysis of variance (ANOVA) showed much higher values than the non-parametric ones calculated by Kendall's tau beta. The highest levels of correlation in hip OA between clinical functional tests and radiological changes were found for hip extension (r = 0.57; P < 0.01) and the Patrick sign (r = 0.54; P < 0.01) while in knee OA the highest correlations were found for knee circumference (r = 0.5; P < 0.01) and knee flexion (r = 0.035; P < 0.02). Knee muscle strength, as measured with a hand-held pull gauge, showed a high level of interobserver agreement (r = 0.79), but correlated poorly with radiological changes. In conclusion parametric variables of joint morphology as knee circumference of parametric variables of function as the Patrick sign should be preferred for assessing secondary endpoints in OA clinical trials.