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Biomedical subjects

S Liddle

Publications and source records attributed to S Liddle.

3 recordsLinked to original sources

Tendon grafting with glutaraldehyde fixed material.

An evaluation of 0.2% buffered glutaraldehyde fixed tendon as a potential tendon replacement prosthesis was evaluated in rabbit and chicken models. In vivo implantations were done to determine compatability, function, and strength of grafts. Autogenous fresh grafts were used as controls in the strength evaluations. The fixed tendon elicits no cellular rejection response, is invaded and replaced by host tissues, and anastomosis strength in tension compares favorably to a fresh autogenous control. These preliminary evaluations indicate a useful potential for this fixed biomaterial as a tendon prosthesis.

Aldehydes

Laboratory evaluation of various cold therapy modalities.

An attempt to evaluate the potential of four modalities to cool soft tissue mass has been done under laboratory conditions using canines. The cooling of deep soft tissues within the thigh after application of various cooling devices was recorded over a 60-min exposure period. Under these circumstances, ice performed best, a frozen gel pack performed in a parallel but slightly less efficient manner. Two other modalities, an inflatable bladder filled with refrigerant gas and an endothermic chemical reaction, were least efficient in cooling.

Acute Disease

Conditioning program for competitive figure skating.

To test the feasibility that traditional interval training methods could be adapted to the needs of competitive figure skaters, an interval skating program was conducted during a 3-month period for a group of skaters at diverse levels of proficiency. The program required only a small portion of the total ice time utilized by the skaters on a daily basis, i.e., 1/2 hr, three times a week. On alternate days, the skaters used the same amount of time in a strength training program. A flexibility-stretching facet was to be done by the skaters on a daily basis. Progress was evaluated by treadmill oxygen consumption determinations and ability to perform a 1/2-mile skate effort. Over the course of the 3-month period, the skaters in the program showed an average increase in oxygen consumption of 9% from 44.73 cc per kg per min to 55.51 cc per kg per min. This was accompanied by an average 10-sec reduction in the timed effort at the 1/2-mile skate. Subjectively, the skaters were less fatigued during their freestyle skating programs and were able to improve consistency at skilled maneuvers in the last minute of their performances. This initial effort to evaluate the efficacy of this type of a training program for competitive figure skating seems to have proven to be beneficial to the skaters. Currently, we are continuing our efforts to expand the program.

Adolescent