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International Journal of Sports Medicine|February 1, 1992
In-line skating: physiological responses and comparison with roller skiingM D Hoffman, G M Jones, B Bota, et al.International Journal of Sports Medicine|January 1, 1993
Exercise responses to in-line skating: comparisons to running and cyclingA C Snyder, K P O'Hagan, P S Clifford, et al.Canadian Journal of Applied Physiology = Revue Canadienne De Physiologie Appliquee|December 1, 1995
Delta efficiency of uphill roller skiing with the double pole and diagonal stride techniquesM D Hoffman, P S Clifford, P B Watts, et al.International Journal of Sports Medicine|January 7, 1999
Cycle rate variations in roller ski skating: effects on oxygen uptake and poling forcesG Y Millet, M D Hoffman, R B Candau, et al.Medicine and Science in Sports and Exercise|May 20, 1998
Effect of rolling resistance on poling forces and metabolic demands of roller skiingG Y Millet, M D Hoffman, R B Candau, et al.Medicine and Science in Sports and Exercise|September 1, 1992
Scientific basis of competitive cross-country skiingP S CliffordMedicine and Science in Sports and Exercise|March 21, 1998
Physiological effects of technique and rolling resistance in uphill roller skiingM D Hoffman, P S Clifford, A C Snyder, et al.International Journal of Sports Medicine|April 11, 2008
Anthropometric characteristics of ultramarathonersM D HoffmanInternational Journal of Sports Medicine|December 24, 2009
Performance trends in 161-km ultramarathonsM D HoffmanMedicine and Science in Sports and Exercise|September 1, 1992
Physiological comparisons of cross-country skiing techniquesM D HoffmanPageof 13