| dc.description.abstract | The purpose of this study was to determine the effects
of short-term electrical stimulation of the quadriceps
muscle, isokinetic leg extension and flexion exercise, and
combined electrical stimulation and isokinetic exercise on
serum enzyme and electrolyte concentrations. The subjects
used in the study were eleven healthy female university
students, 20 to 23 years of age. The subjects reported to
the laboratory once each week for three consecutive weekends.
On the first weekend electrical stimulation exercises
were conducted. Isokinetic exercise and combined electrical
stimulation and isokinetic exercise were performed on the
second and third weekends respectively. All testing was
carried out in the morning between 10:00 AM and 12:00 PM.
Blood samples were obtained from an atecubtial vein Just
prior to, immediately after, and five minutes after each
exercise. Serum enzymes (lactate dehydrogenase, creatine
kinase, aspartate aminotransferase and alkaline phosphatase)
and electrolytes (sodium, potassium, chloride and total
carbon dioxide) were measured using the Abbott Laboratories
VP Bichromatic Analyser and the Nova Biochemical NOVA-4
Specific Ion Electrode Analyser respectively.
Minor, but statistically significant (p. < 0.05) changes
in lactate dehydrogenase and aspartate aminotransferase
occurred after exercise. No significant changes were found
in creatine kinase. Serum alkaline phosphatase levels were
increased significantly after both electrical stimulation
and isokinetic exercise. This suggested that the electrical
stimulation and isokinetic exercise may stimulate bone
metabolism. Small but statistically significant (p < 0.05) changes in serum sodium and total carbon dioxide occurred
after the electrical stimulation and isokinetic exerise. No
significant changes were noted in serum potassium and serum
chloride.
There was no evidence from this study, to suggest that
either electrical stimulation or isokinetic exerise had
detrimental effects on muscles. No other research dealing
with the effects of electrical stimulation and isokinetic
exercise on serum enzymes and electrolytes were available
for comparison with this study. | |
