Journal
INTERNATIONAL JOURNAL OF SPORTS PHYSIOLOGY AND PERFORMANCE
Volume 17, Issue 4, Pages 663-666Publisher
HUMAN KINETICS PUBL INC
DOI: 10.1123/ijspp.2021-0252
Keywords
steep walking; vertical km; uphill training; mountain running; trail running
Categories
Funding
- Comune di Gemona
- Comune di Paluzza
- Dellach Sportsverein
- FH Karnten
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Steep uphill pole walking on a treadmill requires lower energy consumption compared to overground walking, but shows similar heart rate and rate of perceived exertion. No significant differences were found in other physiological measurements or spatiotemporal parameters.
Purpose: To compare energetics and spatiotemporal parameters of steep uphill pole walking on a treadmill and overground. Methods: First, the authors evaluated 6 male trail runners during an incremental graded test on a treadmill. Then, they performed a maximal overground test with poles and an overground test at 80% (OG(80)) of vertical velocity of maximal overground test with poles on an uphill mountain path (length = 1.3 km, elevation gain = 433 m). Finally, they covered the same elevation gain using poles on a customized treadmill at the average vertical velocity of the OG(80). During all the tests, the authors measured oxygen uptake, carbon dioxide production, heart rate, blood lactate concentration, and rate of perceived exertion. Results: Treadmills required lower metabolic power (15.3 [1.9] vs 16.6 [2.0] W/kg, P = .002) and vertical cost of transport (49.6 [2.7] vs 53.7 [2.1] J/kg.m, P < .001) compared with OG(80). Also, oxygen uptake was lower on a treadmill (41.7 [5.0] vs 46.2 [5.0] mL/kg.min, P = .001). Conversely, respiratory quotient was higher on TR80 compared with OG(80) (0.98 [0.02] vs 0.89 [0.04], P= .032). In addition, rate of perceived exertion was higher on a treadmill and increased with elevation (P < .001). The authors did not detect any differences in other physiological measurements or in spatiotemporal parameters. Conclusions: Researchers, coaches, and athletes should be aware that steep treadmill pole walking requires lower energy consumption but same heart rate and rate of perceived exertion than overground pole walking at the same average intensity.
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