Males and Females Respond Similarly to Walking With a Standardized, Heavy Load.
Females in the military sustain a higher incidence of lower extremity injuries compared to males. Previous investigations of gender differences during load carriage used loads normalized to body mass; as a result of anthropometric and strength differences between genders, this may partially normaliz...
| Publicado en: | Military Medicine Vol. 180; no. 9; pp. 994 - 1001 |
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| Autores principales: | , , , |
| Formato: | research Journal Article |
| Publicado: |
Oxford University Press / USA
Sep2015
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=109640363&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 109640363 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00264075 4DV jtl: Military Medicine issn: 00264075 maglogo: N pubinfo: dt: Sep2015 vid: 180 iid: 9 pid: 622 pub: Oxford University Press / USA artinfo: ui: 109640363 109242785 NLM26327552 2013153519 10.7205/MILMED-D-14-00499 NLM26327552 109640363 ppf: 994 ppct: 7 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Males and Females Respond Similarly to Walking With a Standardized, Heavy Load. aug: au: Krupenevich, Rebecca Rider, Patrick Domire, Zachary DeVita, Paul sug: subj: Weight-Bearing Physiology Gait Physiology Walking Physiology Sex Factors Human Lifting Adolescence Adaptation, Physiological Posture Muscle, Skeletal Physiology Kinematics Young Adult Lower Extremity Physiology Male Torque Female Validation Studies Comparative Studies Evaluation Research Multicenter Studies Adolescent: 13-18 years Male Female ab: Females in the military sustain a higher incidence of lower extremity injuries compared to males. Previous investigations of gender differences during load carriage used loads normalized to body mass; as a result of anthropometric and strength differences between genders, this may partially normalize to strength, masking gender or size differences in response to load. We compared gait kinetics and kinematics between genders based on a standardized load, instead of loads relative to body mass. 11 males and 11 females walked at 1.5 m/s over level ground with a 22 kg rucksack using three load conditions: unloaded, low-back placement, and mid-back placement. We found a gender by load interaction for average trunk position (p < 0.05). Stride length decreased 1.3% in loaded vs. unloaded walking. Loaded walking increased knee extensor (65%) and ankle plantarflexor torque (23%, all p < 0.0001), but not hip extensor torque (p > 0.05) compared to unloaded walking. The lack of gender differences may indicate that females do not adapt gait mechanics to account for smaller stature and lesser absolute strength compared to males, which may contribute to the high injury rate in female military recruits. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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