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Physiological Responses of Elliptical and Treadmill Exercise in Collegiate Distance Runners
Author(s) -
Garlatz T.J.,
Brilla L.R.,
Knutzen K.M.,
Chalmers G.R.
Publication year - 2008
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.22.1_supplement.1175.2
Subject(s) - treadmill , medicine , blood lactate , heart rate , physical therapy , cardiology , rating of perceived exertion , blood pressure
Physiological responses of collegiate distance runners were compared in elliptical and treadmill exercise. Eighteen male subjects (age 19–23 yrs) performed four separate five‐minute exercise trials over two days, with a treadmill and an elliptical machine. One trial for each apparatus was performed at 75% of the subject's heart rate reserve (HRR), while the other trial was at 90% HRR. Oxygen consumption (VO 2 ) and ratings of perceived exertion (RPE) were measured during all trials, and blood lactate concentrations were measured following exercise at 90% HRR. Significantly (P < 0.007) higher VO 2 was measured during treadmill running (48.0 and 61.5 ml/kg/min at 75% and 90% HRR respectively) than during elliptical exercise (43.3 and 58.3 ml/kg/min). No significant differences existed in RPE between treadmill and elliptical exercise at 75% HRR, however, higher RPE values were observed in elliptical exercise (16.2) compared to treadmill running (14.6) during 90% HRR trials (P<0.05). Higher blood lactate concentrations were found in elliptical (7.97 mmol/L) than treadmill (4.77 mmol/L) in 90% HRR trials (P<0.05). Effect size analysis showed the effect of modality attributed 50.6% of the difference in blood lactates to differences between elliptical and treadmill exercise. Runners and coaches should consider these results when using the elliptical trainer as a cross training modality.