Comparison of Knee Flexion and Extension in the Diagonal and Sagittal Planes: An EMG StudySnyder, Jayne, L.;Forward, Edna, M.
doi: 10.1093/ptj/52.12.1255pmid: 5085915
Abstract Sequences of electromyographic activity in the freely moving lower limb were compared during flexion and extension movements in the sagittal and diagonal plane. Other changes in agonist-antagonist interactions related to speed of movement and transiently induced pain completed the analysis. The six muscles investigated, with the exception of the adductor group, were less active in diagonal plane movements. In the 120 degrees flexion to extension range, the vastus medialis was inactive until the last 50 to 30 degrees. Speed of movement changed the level of peak activity in both agonists and antagonists. Transient pain altered rate of motor unit firing. This content is only available as a PDF. © 1972 American Physical Therapy Association, Inc
Maximal Isometric Tension of the Elbow Extensors at Varied Positions: Part 2. Assessment of Extensor Components by Quantitative ElectromyographyCurrier, Dean, P.
doi: 10.1093/ptj/52.12.1265pmid: 5085916
Abstract An electromyographic analysis was performed on the three heads of the right triceps brachii and anconeus muscles of forty-one normal, healthy, men subjects while performing maximal isometric contractions at 60, 90, and 120 degrees from full elbow extension. All subjects were tested twice with a one-week interval between tests. The data analysis revealed that varying the elbow position altered both the electrical activity and tension of the muscles. The 60-degree elbow position resulted in less electrical activity than the 90- and 120-degree positions while the 90- and 120-degree positions did not differ significantly from each other. The test-retest correlation coefficients ranged from .440 to .682 for electrical activity. The correlation coefficients between the electrical activity of the different muscle sections and muscle tensions evaluated were generally low ranging from –.037 to .453. The quantitative electromyographic method did not demonstrate its value as a valid method of assessing maximal muscular force, nor did electrical activity of any individual muscle section seem to be a valid predictor of strength. This study was supported in part by grant AY-71-14-70 from the U.S. Public Health Service, HSMHA, Federal Health Programs Service. © 1972 American Physical Therapy Association, Inc
Efficacy of Povidone-Iodine in the Disinfection of Whirlpool Baths and Hubbard TanksSimonetti,, Alexander;Miller,, Richard;Gristina,, Jerome
doi: 10.1093/ptj/52.12.1277pmid: 5085917
Abstract Two preparations were studied for antiseptic efficacy in hydrotherapy. A povidone-iodine concentrate, diluted to four parts per million of available iodine, was tested for antibacterial activity in hydrotherapy bath water, and a povidone-iodine surgical scrub (0.75 percent available iodine) was tested for tank surface disinfection. Bacterial cultures from water and surfaces before and after fifty patient uses established, by colony count, that the number of organisms was sharply reduced, on the average by more than 90 percent. Patient PBI and T4 levels were unaffected by the agents. This content is only available as a PDF. © 1972 American Physical Therapy Association, Inc
On Not Turning Out Physical Therapists: A Critical Issue for Education in Physical TherapyMichels,, Eugene
doi: 10.1093/ptj/52.12.1292pmid: 5085921
Abstract The aims of physical therapy education are analyzed by juxtaposing the concepts of education for physical therapy and education in physical therapy. Support for the latter concept is developed and the point is made that, in a university setting, physical therapy should be an academic discipline in its own right. Presented at the forty-ninth annual conference of the American Physical Therapy Association, Las Vegas, NV, June 10-16, 1972, in the session “Critical Issues for Education in Physical Therapy.” © 1972 American Physical Therapy Association, Inc