Intensity of physical activity as a percentage of peak oxygen uptake, heart rate and Borg RPE in motor-complete para- and tetraplegia

Autoři: Tobias Holmlund aff001;  Elin Ekblom-Bak aff003;  Erika Franzén aff004;  Claes Hultling aff001;  Kerstin Wahman aff001
Působiště autorů: Department of Neurobiology, Care Sciences and Society, Division of Neurogeriatrics, Karolinska Institutet, Stockholm, Sweden aff001;  Rehab Station Stockholm/Spinalis R&D Unit, Solna, Sweden aff002;  Åstrand Laboratory of Work Physiology, The Swedish School of Sport and Health Sciences, Stockholm, Sweden aff003;  Department of Neurobiology, Care Sciences and Society, Division of Physiotherapy, Karolinska Institutet, Stockholm, Sweden aff004;  Allied Health Professionals Function, Function Area Occupational Therapy & Physiotherapy, Karolinska University Hospital, Stockholm, Sweden aff005;  Spinals Foundation–R&D Unit, Stockholm, Sweden aff006
Vyšlo v časopise: PLoS ONE 14(12)
Kategorie: Research Article



The aims were to describe VO2peak, explore the potential influence of anthropometrics, demographics and level of physical activity within each cohort; b) to define common, standardized activities as percentages of VO2peak and categorize these as light, moderate and vigorous intensity levels according to present classification systems, and c) to explore how clinically accessible methods such as heart-rate monitoring and Borg rating of perceived exertion (RPE) correlate or can describe light, moderate and vigorous intensity levels.


Cross sectional.


Rehabilitation facility and laboratory environment.


Sixty-three individuals, thirty-seven (10 women) with motor-complete paraplegia (MCP), T7-T12, and twenty-six (7 women) with motor-complete tetraplegia (MCT), C5-C8.


VO2peak was obtained during a graded peak test until exhaustion, and oxygen uptake during eleven different activities was assessed and categorized using indirect calorimetry.

Main outcome measures

VO2peak, Absolute and relative oxygen consumption, Borg RPE.


Absolute VO2peak was significantly higher in men than in women for both groups, with fairly small differences in relative VO2peak. For MCP sex, weight and time spent in vigorous-intensity activity explained 63% of VO2peak variance. For MCT sex and time in vigorous-intensity activity explained 55% of the variance. Moderate intensity corresponds to 61–72% HRpeak and RPE 10–13 for MCP vs. 71–79% HRpeak, RPE 13–14 for MCT.


Using current classification systems, eleven commonly performed activities were categorized in relative intensity terms, (light, moderate and vigorous) based on percent of VO2peak, HRpeak and Borg RPE. This categorization enables clinicians to better guide persons with SCI to meet required physical activity levels.

Klíčová slova:

Anthropometry – Exercise – Heart rate – Oxygen consumption – Physical activity – Spinal cord injury – Wheelchairs – Paraplegia


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