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The purpose of this study was to examine the effects of glucose ingestion before exercise on running performance and blood glucose concentration. 30 male handball players who play in Turkish Super League (age: 22,900±2,591 year, body weight: 76,043±3,709 kg, height: 181,300±5,305 cm) participated this study. The subjects ingested a glucose solution (1 gr per kg of body mass in 350 ml water) 45 minute and 60 minute prior to 20 m shuttle run test and a placebo one prior to test. Each subject performed shuttle run exercise separated by a week. Earlobe blood samples were taken; before glucose ingestion (resting levels), every 15 minutes after glucose ingestion until the exercise starts and immediately after the exercise for the determination of blood glucose levels. Blood lactic acid levels were measured before glucose ingestion (resting levels) and after 5 minutes of exercise. Resting blood glucose levels that measured before glucose ingestion (placebo: 78,300±5,052 mg/dl, 45 minute: 78,266±3,571 mg/dl, 60 minute: 78,033±5,580 mg/dl) were not found significantly different (p>0,05). The blood glucose values (placebo: 78,633±4,552 mg/dl, 45 minute: 111,766±11,119 mg/dl, 60 minute: 97,466±14,407 mg/dl) that measured immediately before exercise were found significantly different (p<0,01). Blood glucose levels began to increase after glucose ingestion and the peak blood glucose values were reached within 30 minutes after glucose ingestion. The blood glucose values (placebo: 86,066±7,441 mg/dl, 45 minute: 84,100±16,346 mg/dl ve 60 minute: 81,500±14,359 mg/dl) that measured immediately after exercise were not found significantly different (p>0,05). It was determined that glucose ingesting didn't significantly effect the shuttle run performance and lactic acid levels (p>0,05). The results of this study show that ingesting glucose in different times before exercise effected the blood glucose concentration but didn't effect the shuttle run performance and blood lactic acid levels.

EGZERSİZDEN 45 VE 60 DAKİKA ÖNCE GLİKOZ ALIMININ KOŞU PERFORMANSINA VE KAN GLİKOZ KONSANTRASYONUNA ETKİSİ