Aim:To evaluate the difference in aerobic capacity of rugby player (backs and forward). Subjects and methods: 18 professional rugby players (6 backs, 12 forwards). Each subject performed a maximal incremental treadmill test with gas exchange measurements for the evaluation of VO2max and anaerobic threshold (AT). Results: Mean age, weight, height, Body Mass Index ± standard deviation (SD) were respectively: 25±3.2, 101±12.2 kg, 185±7.1 cm, 29±2.9 kg/m². Mean ± SD values of AT speed (ATS), speed max, AT heart rate (HR) and HRmax were respectively: 13.3±0.8 (range12.2-14.7km/h), 21.9±2 km/h (range17.5-24.3 km/h), 177.7±7.7 bpm (range 166-193 bpm), 188.1±7.12bpm (range 176-205 bpm). The ATS was significantly greater in backs (13.8±0,4vs 13.1±0.7 km/h; T-test, P<0.05) instead forward.The VO2max was significantly greater in forwards (5.7±0,6vs 4.6±0,5 L/min,; T-test, P<0,05).The mean value of VO2max/kg for backs was 54.2ml/kg/min and 52.5ml/kg/min for forwards (T-test, P>0,05). Conclusion: In rugby, different roles may require different levels of aerobic capacity that are more important for backs because they had cover greater total distances walking and running during the match; on the opposite the forwards had more strength and muscle power for the static steps (maul, ruck, scrum, touche and tackling). VO2max was significant higher in forwards while there are no significant differences in VO2max/kg. These results could be due to the two groups different body structure indeed the forwards have a higher percentage body fat.
DIFFERENCE IN AEROBIC CAPACTY IN RUGBY PLAYERS
MAZZONI, Gianni;BERNARDI, Eva;GROSSI, Giulio;ULIARI, Simone;GRAZZI, Giovanni
2012
Abstract
Aim:To evaluate the difference in aerobic capacity of rugby player (backs and forward). Subjects and methods: 18 professional rugby players (6 backs, 12 forwards). Each subject performed a maximal incremental treadmill test with gas exchange measurements for the evaluation of VO2max and anaerobic threshold (AT). Results: Mean age, weight, height, Body Mass Index ± standard deviation (SD) were respectively: 25±3.2, 101±12.2 kg, 185±7.1 cm, 29±2.9 kg/m². Mean ± SD values of AT speed (ATS), speed max, AT heart rate (HR) and HRmax were respectively: 13.3±0.8 (range12.2-14.7km/h), 21.9±2 km/h (range17.5-24.3 km/h), 177.7±7.7 bpm (range 166-193 bpm), 188.1±7.12bpm (range 176-205 bpm). The ATS was significantly greater in backs (13.8±0,4vs 13.1±0.7 km/h; T-test, P<0.05) instead forward.The VO2max was significantly greater in forwards (5.7±0,6vs 4.6±0,5 L/min,; T-test, P<0,05).The mean value of VO2max/kg for backs was 54.2ml/kg/min and 52.5ml/kg/min for forwards (T-test, P>0,05). Conclusion: In rugby, different roles may require different levels of aerobic capacity that are more important for backs because they had cover greater total distances walking and running during the match; on the opposite the forwards had more strength and muscle power for the static steps (maul, ruck, scrum, touche and tackling). VO2max was significant higher in forwards while there are no significant differences in VO2max/kg. These results could be due to the two groups different body structure indeed the forwards have a higher percentage body fat.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
