Izvorni znanstveni članak

Differences in heart rate and lactate levels at three different workloads in step aerobics

Petra Zaletel orcid.org/0000-0003-2395-3720 ; University of Ljubljana, Faculty of Sport, Ljubljana, Slovenia
Gordana Furjan-Mandić ; University of Zagreb, Faculty of Kinesiology, Zagreb, Croatia
Meta Zagorc ; University of Ljubljana, Faculty of Sport, Ljubljana, Slovenia

Sažetak

The aim of the research was to establish differences between the HR values and maximal blood lactate concentration assessed during the performance of a step aerobics programme at three different heights of step-bench. The sample consisted of 12 female aerobics instructors, aged between 20 and 28. The subjects executed a pre-defined choreography uninterruptedly for 30 minutes on a step bench, which was set at three different heights: 20, 25 and 30 cm, and to the music set at 135 bpm. At the beginning and immediately after the 30-minute activity HRpeak and blood lactate - b[LA] concentration were measured. HR monitors, recording data every 5 minutes, controlled the HRpeak. Data processing was performed using SPSS statistical programme, descriptive statistics method and t-test for establishing differences between the subjects’ HR. It was established that there were statistically significant differences between the subjects in terms of average HR at various step bench heights. It was also established that the lactate values did not rise proportionately to the HR values.

Ključne riječi

step aerobics; exercise intensity; height of step-bench; heart rate; blood lactate concentration

Hrčak ID:

38553

URI

https://hrcak.srce.hr/38553

Datum izdavanja:

30.6.2009.

Podaci na drugim jezicima: hrvatski

Posjeta: 3.448 *