Muscular, cardiorespiratory and thermal strain of mast and pole workers.
Ergonomics
; 57(5): 669-78, 2014.
Article
en En
| MEDLINE
| ID: mdl-24655301
ABSTRACT
This field study evaluated the level of muscular, cardiorespiratory and thermal strain of mast and pole workers. We measured the muscular strain using electromyography (EMG), expressed as a percentage in relation to maximal EMG activity (%MEMG). Oxygen consumption (VO2) was indirectly estimated from HR measured during work and expressed as a percentage of maximum VO2 (%VO2max). Skin and deep body temperatures were measured to quantify thermal strain. The highest average muscular strain was found in the wrist flexor (24 ± 1.5%MEMG) and extensor (21 ± 1.0%MEMG) muscles, exceeding the recommendation of 14%MEMG. Average cardiorespiratory strain was 48 ± 3%VO2max. Nearly half (40%) of the participants exceeded the recommended 50%VO2max level. The core body temperature varied between 36.8°C and 37.6°C and mean skin temperature between 28.6°C and 33.4°C indicating possible occasional superficial cooling. Both muscular and cardiorespiratory strain may pose a risk of local and systemic overloading and thus reduced work efficiency. Thermal strain remained at a tolerable level.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Consumo de Oxígeno
/
Temperatura Cutánea
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Industria de la Construcción
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Músculo Esquelético
/
Esfuerzo Físico
Límite:
Adult
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Ergonomics
Año:
2014
Tipo del documento:
Article
País de afiliación:
Finlandia