Purpose The aim of the study was to investigate the effects of acute passive stretching on O2 uptake (˙V O2) vs work rate slope during a continuous incremental ramp exercise. Methods On two different occasions, eight participants (age 23 ± 3 years; stature 1.71 ± 0.10 m; body mass 68 ± 8 kg; mean ± SD) performed two maximum incremental ramp tests on a cycle ergometer (25 W/min), with and without pre-exercise stretching. During tests, we measured ˙V O2 and other metabolic and cardiorespiratory parameters on a breath-by-breath basis. The ˙V O2 vs work rate slopes were calculated below (S1) and above (S2) the first ventilatory threshold (VET1). Results With stretching: (1) peak ˙V O2 did not change, while peak work rate decreased (P < 0.05, ES = −0.41; CI −1.40/−0.58); (2) in spite of a similar S1, S2 was steeper by about 11 % (P < 0.05; ES = 0.62; CI −0.38/−1.62). Conclusions Stretching reduced peak work rate and altered the ˙V O2 vs work rate relationship above VET1 (S2), without affecting peak ˙V O2. The present findings have practical implications, questioning the use of stretching manoeuvres especially when peak work rate plays a key role in exercise performance.
Influence of acute passive stretching on the oxygen uptake vs work rate slope during an incremental cycle test / E. Limonta, S. Rampichini, A. Riboli, M. Venturelli, E. Cè, F. Esposito. - In: EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY. - ISSN 1439-6319. - 115:12(2015 Dec), pp. 2583-2592. [10.1007/s00421-015-3273-y]
Influence of acute passive stretching on the oxygen uptake vs work rate slope during an incremental cycle test
E. LimontaPrimo
;S. RampichiniSecondo
;A. Riboli;M. Venturelli;E. CèPenultimo
;F. EspositoUltimo
2015
Abstract
Purpose The aim of the study was to investigate the effects of acute passive stretching on O2 uptake (˙V O2) vs work rate slope during a continuous incremental ramp exercise. Methods On two different occasions, eight participants (age 23 ± 3 years; stature 1.71 ± 0.10 m; body mass 68 ± 8 kg; mean ± SD) performed two maximum incremental ramp tests on a cycle ergometer (25 W/min), with and without pre-exercise stretching. During tests, we measured ˙V O2 and other metabolic and cardiorespiratory parameters on a breath-by-breath basis. The ˙V O2 vs work rate slopes were calculated below (S1) and above (S2) the first ventilatory threshold (VET1). Results With stretching: (1) peak ˙V O2 did not change, while peak work rate decreased (P < 0.05, ES = −0.41; CI −1.40/−0.58); (2) in spite of a similar S1, S2 was steeper by about 11 % (P < 0.05; ES = 0.62; CI −0.38/−1.62). Conclusions Stretching reduced peak work rate and altered the ˙V O2 vs work rate relationship above VET1 (S2), without affecting peak ˙V O2. The present findings have practical implications, questioning the use of stretching manoeuvres especially when peak work rate plays a key role in exercise performance.File | Dimensione | Formato | |
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