Hand-rim Forces and Gross Mechanical Efficiency at Various Frequencies of Wheelchair Propulsion

Abstract

To determine the effects of push frequency changes on force application, fraction of effective force (FEF) and gross efficiency (GE) during hand-rim propulsion. 8 male able-bodied participants performed five 4-min sub-maximal exercise bouts at 1.8 m·s^− 1; the freely chosen frequency (FCF), followed by 4 counter-balanced trials at 60, 80, 120 and 140% FCF. Kinetic data was obtained using a SMART^Wheel, measuring forces and moments. The GE was determined as the ratio of external work done and the total energy expended. Increased push frequency led to reductions in peak resultant force (P<0.05), ranging from 167 to 117 N and peak tangential force (P<0.05), ranging from 117 to 77 N. However, FEF only demonstrated a significant difference between 60% and 140% FCF (69±9% and 63±7, respectively; P<0.05). Work per cycle decreased significantly (P<0.05) and rate of force development increased significantly (P<0.05) with increased push frequency. GE values were significantly lower at 60%, 120% and 140% FCF than 80% and 100% FCF (P<0.05). No meaningful associations were present between FEF and GE. Under the current testing conditions, changes in push frequency are accompanied with changes in the absolute force values, albeit without changes in either the gross pattern/trend of force application or FEF. Changes in GE are not explained by different levels of force effectiveness.

Key words

push frequency - SMART^Wheel - fraction of effective force - gross efficiency - wheelchair ergometry

• References

• 1 Asato KT, Cooper RA, Robertson RN, Ster JF. SMART^Wheel: development and testing of a system for measuring manual wheelchair propulsion dynamics. IEEE Trans Biomed Eng 1993; 40: 1320-1324
• 2 Bregman DJJ, van Drongelen S, Veeger HEJ. Is effective force application in handrim wheelchair propulsion also efficient?. Clin Biomech 2009; 24: 13-19
• 3 Boninger ML, Baldwin M, Cooper RA, Koontz A, Chan L. Manual wheelchair pushrim biomechanics and axle position. Arch Phys Med Rehab 2000; 81: 608-613
• 4 Boninger ML, Cooper RA, Baldwin MA, Shimada SD, Koontz A. Wheelchair pushrim kinetics: body weight and median nerve function. Arch Phys Med Rehab 1999; 80: 910-915
• 5 Boninger ML, Souza AL, Cooper RA, Fitzgerald SG, Koontz AM, Fay BT. Propulsion patterns and pushrim biomechanics in manual wheelchair propulsion. Am J Phys Med Rehab 2002; 76: 420-426
• 6 Cooper RA, Robertson RN, van Sickle DP, Boninger ML. Methods for determining three-dimensional wheelchair pushrim forces and moments: a technical note. J Rehab Res Dev 1997; 34: 162-170
• 7 Dallmeijer AJ, van der Woude LHV, Veeger HEJ, Hollander AP. Effectiveness of force application in manual wheelchair propulsion in persons with spinal cord injuries. Am J Phys Med Rehab 1998; 77: 213-221
• 8 Goosey VL, Campbell IG, Fowler NE. Effect of push frequency on the economy of wheelchair racers. Med Sci Sports Exerc 2000; 32: 174-181
• 9 de Groot S, Veeger HEJ, Hollander AP, van der Woude LHV. Consequence of feedback-based learning of an effective hand rim wheelchair force production on mechanical efficiency. Clin Biomech 2002; 17: 219-226
• 10 de Groot S, Veeger HEJ, Hollander AP, van der Woude LHV. Wheelchair propulsion technique and mechanical efficiency after 3 wk of practice. Med Sci Sports Exerc 2002; 34: 756-766
• 11 de Groot S, Veeger HEJ, Hollander AP, van der Woude LHV. Effect of wheelchair stroke pattern on mechanical efficiency. Am J Phys Med Rehab 2004; 83: 640-649
• 12 Harriss DJ, Atkinson G. Update – ethical standards in sport and exercise science research. Int J Sports Med 2011; 32: 819-821
• 13 Hintzy F, Tordi N. Mechanical efficiency during hand-rim wheelchair propulsion: effects of base-line subtraction and power output. Clin Biomech 2004; 19: 343-349
• 14 Kauzlarich JJ, van der Woude LHV, Hopman MTE, van Kemenade CH. eds. Biomedical Aspects of Manual Wheelchair Propulsion: The State of the Art II. IOS Press, Amsterdam; Washington DC: 1999: 158-170
• 15 Kotajarvi BR, Basford JR, An KN, Morrow DA, Kaufman KR. The effect of visual biofeedback on the propulsion effectiveness of experienced wheelchair users. Arch Phys Med Rehab 2006; 87: 510-515
• 16 Kwarciak AM, Yarossi M, Ramanujan A, Dyson-Hidson TA, Sisto SA. Evaluation of wheelchair tire rolling resistance using dynamometer-based coast down tests. J Rehab Res Dev 2009; 46: 931-938
• 17 Lenton JP, Fowler NE, van der Woude LHV, Goosey-Tolfrey VL. Wheelchair propulsion: effects of experience and push strategy on efficiency and perceived exertion. Appl Physiol Nutr Metab 2008; 33: 870-879
• 18 Lenton JP, van der Woude LHV, Fowler NE, Goosey-Tolfrey VL. Effects of arm frequency during synchronous and asynchronous wheelchair propulsion on efficiency. Int J Sports Med 2009; 30: 233-239
• 19 Marais G, Dupont L, Maillet M, Weisslans T, Vanvelcenaher J, Pelayo P. Cardiorespiratory and efficiency responses during arm and leg exercises with spontaneously chosen crank and pedal rates. Ergonomics 2002; 45: 631-639
• 20 Mason B, van der Woude LHV, de Groot S, Goosey-Tolfrey VL. The effects of camber on the ergonomics of propulsion in wheelchair athletes. Med Sci Sports Exerc 2011; 43: 319-326
• 21 Mason B, van der Woude LHV, Lenton JP, Goosey-Tolfrey VL. Effects of wheel and hand-rim diameter on sub-maximal wheeling performance in elite wheelchair athletes. Med Sci Sports Exerc 2011; Jun 22 [Epub ahead of print]. PMID: 21701409
• 22 Mercer JL, Boninger M, Koontz A, Ren D, Dyson-Hudson T, Cooper R. Shoulder joint kinetics and pathology in manual wheelchair users. Clin Biomech 2006; 21: 781-789
• 23 Niesing R, Eijskoot F, Kranse R, den Ouden AH, Storm J, Veeger HJ, van der Woude LHV, Snijders CJ. Computer-controlled wheelchair ergometer. Med Biol Eng Comput 1990; 28: 23-29
• 24 Peronnet F, Massicotte D. Table of non-protein respiratory quotient: an update. Can J Sport Sci 1991; 16: 23-29
• 25 Richter WM, Kwarciak AM, Guo L, Turner JT. Effects of single-variable biofeedback on wheelchair handrim biomechanics. Arch Phys Med Rehabil 2011; 92: 572-577
• 26 Robertson RN, Boninger ML, Cooper RA, Shimada SD. Pushrim forces and joint kinetics during wheelchair propulsion. Arch Phys Med Rehab 1996; 77: 856-864
• 27 Rozendaal LA, Veeger HEJ, van der Woude LHV. The push force pattern in manual wheelchair propulsion as a balance between cost and effect. J Biomech 2000; 36: 239-247
• 28 Subbarao JV, Klopfstein J, Turpin R. Prevalence and impact of wrist and shoulder pain in patients with spinal cord injury. J Spinal Cord Med 1995; 18: 9-13
• 29 Vanlandewijck Y, Theisen D, Daly D. Wheelchair propulsion biomechanics: implications for wheelchair sports. Sports Med 2001; 31: 339-367
• 30 Veeger HEJ, van der Woude LHV, Rozendal RH. Effect of hand-rim velocity on mechanical efficiency in wheelchair propulsion. Med Sci Sports Exerc 1992; 24: 100-107
• 31 Verellen J, Theisen D, Vanlandewijck Y. Influence of crank rate in hand cycling. Med Sci Sports Exerc 2004; 36: 1826-1831
• 32 Whipp BJ, Wasserman K. Efficiency of muscular work. J Appl Physiol 1969; 26: 644-648
• 33 van der Woude LH, Bouw A, van Wegen J, van As H, Veeger D, de Groot S. Seat height: effects on submaximal hand rim wheelchair performance during spinal cord injury rehabilitation. J Rehab Med 2009; 41: 143-149
• 34 van der Woude LHV, van der Hendrich KMM, Veeger HEJ, van Ingen Schenau GJ, Rozendal RH, de Groot G, Hollander AP. Manual wheelchair propulsion: effects of power output on physiology and technique. Med Sci Sports Exerc 1988; 20: 70-78
• 35 van der Woude LH, van Kranen E, Ariëns G, Rozendal RH, Veeger HE. Physical strain and mechanical efficiency in hubcrank and handrim wheelchair propulsion. J Med Eng Tech 1995; 19: 123-131
• 36 van der Woude LHV, Veeger HEJ, Dallmeijer AJ, Janssen TWJ, Rozendal LA. Biomechanics and physiology in active manual wheelchair propulsion. Med Eng Phys 2001; 23: 713-733
• 37 van der Woude LH, Veeger HE, Rozendal RH, van Ingen Schenau GJ, Rooth F, van Nierop P. Wheelchair racing: effects of rim diameter and speed on physiology and technique. Med Sci Sports Exerc 1988; 20: 492-500
• 38 van der Woude LHV, Veeger HEJ, Rozendal RH, Sargeant AJ. Optimum cycle frequencies in hand-rim wheelchair propulsion. Wheelchair propulsion technique. Eur J Appl Physiol 1989; 58: 625-632