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. 2013 Jul;36(4):376-82.
doi: 10.1179/2045772313Y.0000000127.

Physical strain of handcycling: an evaluation using training guidelines for a healthy lifestyle as defined by the American College of Sports Medicine

Florentina J Hettinga  1 , Sonja de Groot, Frank van Dijk, Faes Kerkhof, Ferry Woldring, Luc van der Woude
Affiliations

Physical strain of handcycling: an evaluation using training guidelines for a healthy lifestyle as defined by the American College of Sports Medicine

Florentina J Hettinga et al. J Spinal Cord Med. 2013 Jul.

Abstract

Objective: Developments in assistive technology such as handcycling provide attractive possibilities to pursue a healthy lifestyle for patients with spinal cord injury. The objective of the study is to evaluate physical stress and strain of handcycling against training guidelines as defined by the American College of Sports Medicine (ACSM).

Design: Seven able-bodied males conducted an incremental peak exercise handcycling test on a treadmill. In addition, two indoor treadmill (1.3 m/second with an inclination of 0.7% and 1.0 m/second with an inclination of 4.8%) and three outdoor over ground exercise bouts were performed (1.7, 3.3, and 5.0 m/second). One individual handcycled a representative 8-km-distance outdoors.

Outcome measures: Physical stress and strain were described in terms of absolute and relative power output, oxygen uptake (VO2), gross efficiency (GE), and heart rate (HR). Also, local perceived discomfort (LPD) was determined.

Results: Relative handcycling exercise intensities varied between 23.3 ± 4.2 (below the ACSM lower limit of 46%VO2peak) and 72.5 ± 15.1%VO2peak (well above the ACSM lower limit), with GE ranging from 6.0 ± 1.5% at the lower to 13.0 ± 2.6% at the higher exercise intensities. Exercise intensities were performed at 49.8 ± 4.2 to 80.1 ± 10.5%HRpeak. LPD scores were low to moderate (<27 ± 7).

Conclusion: Handcycling is relatively efficient and exercise intensities > 46%VO2peak were elicited. However, exercise load seems to be underestimated using %HRpeak. LPD was not perceived as limiting. Physiological stress and strain in able-bodied individuals appear to be comparable to individuals with a paraplegia. To understand individualize and optimize upper-body training, different training programs must be evaluated.

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Figures

Figure 1
Figure 1
Instrumented add-on handbike, coupled to a regular wheelchair, equipped with an instrumented wheel hub in the front wheel.
See this image and copyright information in PMC

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