EFFECT OF ANAEROBIC CAPACITY AND POWER ON THE PERFORMANCE OF LONG DISTANCE RUNNERS / 体力科学

ABSTRACT

(1) The purpose of the present study was to investigate the significance of anaero-bic energy release in two groups of distance runners whose maximal aerobic power was known to be comparable (Vo<SUB>2</SUB>max averaged 71.1±1.22 ml/kg· min) but differed each other significantly in their performance of 5, 000m run (group A ; n=6, timed in average 14'50″1±11″0 ; and group B ; n=6, timed in average 15'52″5±14″1) .<BR>(2) Twelve runners were subjected to 3 experimental series of treadmill running 1, exhaustive running, 2, two to four trials' of submaximal runnings for 15 min, and 3. running at the intensity corresponding to 90% of maximal oxygen uptake for 14 min, then the“last spurt”for 1 min at 120% of maximal oxygen uptake. In addition, they were asked to sprint up a staircase with their top speed.<BR>(3) Exhaustive running time on the treadmill and maximal oxygen debt in group A were 8'56″2±40″8 and 8454±923.7 ml, respectively. Both were significantly larger than 8'02″8±31″0 and 6787±1301.7 ml registered by group B (p<0.05) .<BR>(4) Differences between A and B groups in their cardio-respiratory responses during maximal treadmill running, threshold of anaerobic metabolism, anaerobic power, alactic and lactic oxygen debt, maximal lactate concentration, etc. were found to be not significant.<BR>(5) These results indicate that the variance in maximal oxygen debt may exert a modifying influence in either positive or negative directions which could be the reason why the same level of aerobic power does not guarantee a comparable performance level in actual running event.