Workload of window cleaners using ladders differing in rung separation

M.J.M. Hoozemans, M.P. de Looze, I. Kingma, K.C. Reijneveld, E.M. Korte, M.P. van der Grinten, J.H. van Dieen

    Research output: Contribution to JournalArticleAcademicpeer-review

    Abstract

    The objective of the present study was to compare energetic workload, perceived exertion, perceived discomfort, safety, and mechanical load at lower limb joints among window cleaners during usage of extension ladders with 30 and 35 cm rung separation. Eleven healthy male professional window cleaners of short and tall stature participated in this study. No significant differences between 30 and 35 cm rung separation were observed for the energetic workload. Results concerning the perceived exertion, discomfort, and safety indicate that 35 cm rung separation is preferred. Based on the mechanical load at the hip, knee, and ankle during ascending and descending the ladder, 30 cm rung separation is preferable to 35 cm rung separation. It is advised to climb ladders with the knees inside the side rails of the ladder, but this seems only possible with 35 cm rung separation. Findings of the presents study suggest that overall, a 35 cm rung separation is marginally favourable while using extension ladders. © 2005 Elsevier Ltd. All rights reserved.
    Original languageEnglish
    Pages (from-to)275-82
    JournalApplied Ergonomics
    Volume36
    DOIs
    Publication statusPublished - 2005

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    Ladders
    Workload
    workload
    Knee
    Safety
    Ankle
    Hip
    Lower Extremity
    Joints
    Rails

    Cite this

    @article{9af2f9b4008e4bc5aad1480c6e472e73,
    title = "Workload of window cleaners using ladders differing in rung separation",
    abstract = "The objective of the present study was to compare energetic workload, perceived exertion, perceived discomfort, safety, and mechanical load at lower limb joints among window cleaners during usage of extension ladders with 30 and 35 cm rung separation. Eleven healthy male professional window cleaners of short and tall stature participated in this study. No significant differences between 30 and 35 cm rung separation were observed for the energetic workload. Results concerning the perceived exertion, discomfort, and safety indicate that 35 cm rung separation is preferred. Based on the mechanical load at the hip, knee, and ankle during ascending and descending the ladder, 30 cm rung separation is preferable to 35 cm rung separation. It is advised to climb ladders with the knees inside the side rails of the ladder, but this seems only possible with 35 cm rung separation. Findings of the presents study suggest that overall, a 35 cm rung separation is marginally favourable while using extension ladders. {\circledC} 2005 Elsevier Ltd. All rights reserved.",
    author = "M.J.M. Hoozemans and {de Looze}, M.P. and I. Kingma and K.C. Reijneveld and E.M. Korte and {van der Grinten}, M.P. and {van Dieen}, J.H.",
    year = "2005",
    doi = "10.1016/j.apergo.2005.01.013",
    language = "English",
    volume = "36",
    pages = "275--82",
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    issn = "0003-6870",
    publisher = "Elsevier Limited",

    }

    Workload of window cleaners using ladders differing in rung separation. / Hoozemans, M.J.M.; de Looze, M.P.; Kingma, I.; Reijneveld, K.C.; Korte, E.M.; van der Grinten, M.P.; van Dieen, J.H.

    In: Applied Ergonomics, Vol. 36, 2005, p. 275-82.

    Research output: Contribution to JournalArticleAcademicpeer-review

    TY - JOUR

    T1 - Workload of window cleaners using ladders differing in rung separation

    AU - Hoozemans, M.J.M.

    AU - de Looze, M.P.

    AU - Kingma, I.

    AU - Reijneveld, K.C.

    AU - Korte, E.M.

    AU - van der Grinten, M.P.

    AU - van Dieen, J.H.

    PY - 2005

    Y1 - 2005

    N2 - The objective of the present study was to compare energetic workload, perceived exertion, perceived discomfort, safety, and mechanical load at lower limb joints among window cleaners during usage of extension ladders with 30 and 35 cm rung separation. Eleven healthy male professional window cleaners of short and tall stature participated in this study. No significant differences between 30 and 35 cm rung separation were observed for the energetic workload. Results concerning the perceived exertion, discomfort, and safety indicate that 35 cm rung separation is preferred. Based on the mechanical load at the hip, knee, and ankle during ascending and descending the ladder, 30 cm rung separation is preferable to 35 cm rung separation. It is advised to climb ladders with the knees inside the side rails of the ladder, but this seems only possible with 35 cm rung separation. Findings of the presents study suggest that overall, a 35 cm rung separation is marginally favourable while using extension ladders. © 2005 Elsevier Ltd. All rights reserved.

    AB - The objective of the present study was to compare energetic workload, perceived exertion, perceived discomfort, safety, and mechanical load at lower limb joints among window cleaners during usage of extension ladders with 30 and 35 cm rung separation. Eleven healthy male professional window cleaners of short and tall stature participated in this study. No significant differences between 30 and 35 cm rung separation were observed for the energetic workload. Results concerning the perceived exertion, discomfort, and safety indicate that 35 cm rung separation is preferred. Based on the mechanical load at the hip, knee, and ankle during ascending and descending the ladder, 30 cm rung separation is preferable to 35 cm rung separation. It is advised to climb ladders with the knees inside the side rails of the ladder, but this seems only possible with 35 cm rung separation. Findings of the presents study suggest that overall, a 35 cm rung separation is marginally favourable while using extension ladders. © 2005 Elsevier Ltd. All rights reserved.

    U2 - 10.1016/j.apergo.2005.01.013

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