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Paper Information

Journal:   SPORT PHYSIOLOGY (RESEARCH ON SPORT SCIENCE)   FALL 2012 , Volume 4 , Number 15; Page(s) 27 To 38.
 
Paper: 

RELATIONSHIP BETWEEN RESTING PLASMA VISFATIN LEVELS AND ITS CHANGES IN RESPONSE TO ACUTE ENDURANCE EXERCISE WITH AEROBIC FITNESS AND BODY COMPOSITION IN HEALTHY MEN

 
 
Author(s):  AHMADIZAD S., RAHMANI H., BASSAMI M.R., TAHMASEBI W.
 
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Abstract: 

The purpose of this study was t investigate the relationship between resting visfatin levels and visfatin changes during endurance exercise with aerobic fitness and body composition. For this purpose, forty six subjects (Mean±SD; age, 42.8±16.0 y; height, 171.7±5.4 cm; weight, 73.6±9.7 kg) participated in this study. In one session after determining body composition characteristics including weight, WHR and BMI, maximal oxygen consumption (Vo2max) was determined after 5 minutes warm-up by using a progressive exercise test on a cycle ergometer. After one week all subjects performed an acute endurance exercise at 60% of Vo2max for 30 minutes on a bicycle. Two blood samples were taken before and immediately after exercise and were analyzed for visfatin and glucose concentrations. To determine the correlations among the variables Pearson's correlation was used. Results showed no significant correlations between serum visfatin with aerobic fitness (r=0.17, P>0.05) and body composition parameters (P>0.05).
However, changes in visfatin during endurance exercise were positively and significantly correlated with aerobic fitness (r=0.349, P=0.018) and glucose (r=0.363, P=0.013). In addition, data analysis revealed that aerobic fitness is negatively and significantly correlated with resting glucose and glucose changes during exercise (P<0.05). Based on the results of the present study it could be concluded that aerobic fitness has no relationship with resting serum visfatin, though the higher aerobic fitness might result in more changes in visfatin responses to exercise, which might be an indicator of visfatin rules in improving the aerobic performance through NAD+ and increases in insulin during and immediately after exercise.

 
Keyword(s): ENDURANCE EXERCISE, VO2MAX, NAMPT, BMI, WHR
 
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