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Biomedical subjects

V Caiozzo

Publications and source records attributed to V Caiozzo.

4 recordsLinked to original sources
PubMed1992

Effect of instructions on isokinetic trunk strength testing variability, reliability, absolute value, and predictive validity.

Although isokinetic strength testing has been in use for more than two decades, and numerous studies have addressed isokinetic performance of the lumbar spine, the effect of instructions on isokinetic trunk strength has not been studied. In a sample of 30 healthy women, this study examined the effect of "high-demand" instructions on lumbar strength performance. High-demand instructions were found to have a substantial positive effect on performance variability, reliability, absolute magnitude, and validity. Under these conditions, isokinetic trunk strength was found to be predictive of performance in a frequent lifting-lowering task.

Adult↗
PubMed1986

Achilles tendon rupture. A review of the literature comparing surgical versus nonsurgical treatment.

Rupture of the Achilles tendon is being reported more frequently. Results published in the literature in the past 25 years were reviewed to determine the overall outcome comparing surgical with nonsurgical treatment and to identify areas needing further study. The rerupture rate for surgically treated patients was 12/777 or 1.54%, while that for nonsurgically treated patients was 40/226 or 17.7%. The complication rate for surgical treatment was 155/775 or 20.0%, while the nonsurgical rate was 2/20 or 10%. Most complications did not affect the eventual outcome. Time lost from work averaged 13 weeks for surgically treated patients and nine weeks for nonsurgically treated patients. Results of tests for functional recovery after treatment were slightly better for surgically treated patients and were worse for patients with reruptures treated nonsurgically. No study tested strength at a specified joint angle; this constitutes a major flaw in strength-testing studies, because strength is related to the functional joint position. The difference in cost between surgical and nonsurgical treatment, including the cost of rerupture treatment, may not be significant.

Absenteeism↗
PubMedDate not supplied

Urban angina in the mountains: effects of carbon monoxide and mild hypoxemia on subjects with chronic stable angina.

Seventeen men with stable angina pectoris who resided at or near sea level performed cardiopulmonary exercise stress tests after they were exposed to either carbon monoxide (3.9%), carboxyhemoglobin, or clean air. Investigators conducted the tests at sea level, and they simulated 2.1-km altitudes (i.e., reduced arterial oxygen saturation by approximately 4%) in a randomized double-blind experiment in which each subject acted as his or her own control. The duration of symptom-limited exercise, heart rate, indicators of cardiac ischemia and arrhythmia, blood pressure, and respiratory gas exchange were measured. Analyses of variance showed that both independent variables-altitude and carbon monoxide-significantly (p < or = .01) reduced total duration of exercise for the group as a whole (n=17) and reduced the time to onset of angina for a subset of 13 subjects who experienced angina during all four test conditions (p < .05). Time to onset of angina was reduced either after exposure to sea-level carbon monoxide (9%) or to simulated high-altitude clean-air exposures (11%), compared with clean air at sea level. Joint exposure to carbon monoxide at a simulated high altitude reduced the time to onset of angina, relative to clean air, by 18% (p < .05). Other cardiological, hemodynamic, and respiratory physiological parameters were also affected adversely by altitude and carbon monoxide exposures. None of the parameters measured were associated significantly with either altitude or carbon monoxide, indicating that the effects of carbon-monoxide-induced and high-altitude-induced hypoxia were additive. The results of this study suggest that high-altitude conditions exacerbate the effects of carbon monoxide exposures in unacclimatized individuals who have coronary artery disease.

Aged↗