Are there sex differences in muscle coordination of the upper girdle during a sustained motor task?

Cid, Marina Machado; Oliveira, Ana Beatriz; Januário, Letícia Bergamin; Côté, Julie N.; Moreira, Roberta de Fátima Carreira; Madeleine, Pascal

doi:10.1016/j.jelekin.2019.01.003

Cited by 8 publications

(4 citation statements)

References 47 publications

(71 reference statements)

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“…The motor variability patterns of the women in the current study are in contrast with those reported by Cid et al [46] and Srinivasan et al [22], who showed increased absolute and relative motor variability in both men and women. As muscle fatigue may influence the development of motor variability, this could be a factor explaining the discrepancy between the two studies [22,46] and the current study. The differences found between men and women may actually point to both sexes applying different motor strategies [22].…”

Section: Effect Of Sex On Motor Variabilitycontrasting

confidence: 99%

“…A decrease in RMS 50 across an observation period may be related to a decreased central neural drive to the muscle [42], which is suggested to act as a protection mechanisms for the development of muscle fatigue [43,44]. Decreased RMS 50 has also been reported for forearm muscles [45] and for the upper arm and shoulder muscles [43,46] along task performance. Although women showed higher RMS 10 in several muscles than men in the current study, which is associated to a higher risk of developing MSD, they also showed tendencies for a decreased RMS 50 along task performance within days, which may be seen as protection mechanism in developing muscle fatigue as potential precursor of MSD.…”

Section: Effect Of Sex On Muscle Activitymentioning

confidence: 93%

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Sex differences in muscle activity and motor variability in response to a non-fatiguing repetitive screwing task

et al. 2020

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Background: Musculoskeletal disorders are more prevalent among women than among men, which may be explained by aspects of motor control, including neuromuscular requirements and motor variability. Using an exploratory approach, this study aimed to evaluate sex differences in neuromuscular responses and motor variability during a repetitive task performed on 3 days.Methods: Thirty women and 27 men performed the non-fatiguing, repetitive, 1-h screwing task. For neuromuscular responses, the mean and difference values of static, median, and peak percentile muscle activity levels (normalized to a reference voluntary contraction force) and, for motor variability, the mean and difference values of relative and absolute cycle-to-cycle variability across days were compared between both sexes for each muscle. A mixed-design analysis of variance was used to assess differences between both sexes.Results: The non-fatiguing character of the screwing task was confirmed by the absence of decreased force levels in maximal voluntary contractions performed before and after the task and by absence of electromyographic signs of muscle fatigue. The static and median muscle activity levels tended to be higher among women (on average 7.86 and 27.23 %RVE) than men (on average 6.04 and 26.66 %RVE). Relative motor variability of the flexor and biceps muscles and absolute motor variability of both upper arm muscles were lower in women (on average 0.79 and 29.70 %RVE) than in men (on average 0.89 and 37.55 %RVE). The median activity level of both upper arms muscles tended to decrease within days among women (on average -2.63 %RVE) but increase among men (on average + 1.19 %RVE). Absolute motor variability decreased within days among women (on average -5.32 to -0.34%RVE), whereas it tended to decrease less or increase within days among men (on average -1.21 to + 0.25 %RVE).Conclusion: Women showed higher levels of muscle activity and lower initial relative and absolute motor variability than males when performing the same occupational task, implying women may have a higher risk for developing disorders and point to both sexes using different intrinsic motor control strategies in task performance. Clearly, biological aspects alone cannot explain why women would be at higher risk for developing disorders than men. Therefore, a wider range of individual and environmental factors should be taken into account for optimizing work station designs and organizations by taking into account sex differences.

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Section: Effect Of Sex On Motor Variabilitycontrasting

confidence: 99%

Section: Effect Of Sex On Muscle Activitymentioning

confidence: 93%

Sex differences in muscle activity and motor variability in response to a non-fatiguing repetitive screwing task

et al. 2020

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“…Biological (e.g., hormonal) and psychosocial differences (e.g., coping strategies and self-efficacy) between men and women have been identified as explanations for sex/gender-based differences in reports of MSP (Sorge and Totsch 2017;Fillingim 2000). Differences in motor control strategies when performing physical work tasks may also cause women to experience more MSP than men (Cid et al 2019). Overall, these differences suggest that women have a higher vulnerability to MSP than men and could partly explain why we found that MSP had a greater effect on poor work ability among women than men.…”

Section: Interpretation Of the Resultsmentioning

confidence: 99%

The impact of musculoskeletal pain and strenuous work on self-reported physical work ability: a cohort study of Swedish men and women

Badarin

Hemmingsson

Hillert

et al. 2021

Int Arch Occup Environ Health

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Objective We investigated the separate and combined effects of musculoskeletal pain (MSP) and strenuous work (heavy physical workload (PWL)/low-decision authority) on poor physical work ability (WA). Methods This study uses baseline data from the 2010 Stockholm Public Health Questionnaire (SPHQ) including 9419 workers with good physical WA. Exposure to PWL and decision authority were estimated using sex-specific job-exposure matrices linked to occupations. Exposures (high/low) were combined with the presence of MSP. Follow-up data on physical WA were taken from the 2014 SPHQ and dichotomised (the responses: “moderate”, “rather poor” and “very poor” indicated poor WA). Logistic regression models calculated sex-specific odds ratios adjusting for age, education and health and lifestyle factors. Interaction between MSP and strenuous work was examined using the synergy index (SI). Analyses were conducted using SPSS.27. Results MSP, heavy PWL and low-decision authority were separately associated with poor WA. MSP was associated with higher odds of poor WA than strenuous work for women, the opposite for men. Combinations of MSP and strenuous work often resulted in higher risks of poor WA than when adding the effects of the single exposures (e.g., MSP and heavy PWL men: AOR 4.04 95% CI 2.00–8.15, women: AOR: 3.25 95% CI 1.81–5.83). The SI was non-significant for both sexes. Conclusion Workers with MSP and strenuous work often had higher risks of poor WA than would be expected from adding the effects of the single exposures. To decrease poor WA in this group, strenuous work should be lowered, and MSP addressed in workplaces.

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“…Sex-related differences are complex and multifaceted, often arising from a combination of biological, psychological, and sociocultural factors. In our study, possible differences may be attributed to physical characteristics, e.g., arm length and differences in motor control and coordination during reaching [23,24]. Additionally, men and women might exhibit variations in responsiveness to different types of cues, as related to factors such as attention or reaction time [25,26].…”

Section: Discussionmentioning

confidence: 75%

Comparing Performance and Preference of Visually Impaired Individuals in Object Localization: Tactile, Verbal, and Sonification Cueing Modalities

Abu Rass,

Cohen,

Bareli

et al. 2023

Technologies

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Audio guidance is a common means of helping visually impaired individuals to navigate, thereby increasing their independence. However, the differences between different guidance modalities for locating objects in 3D space have yet to be investigated. The aim of this study was to compare the time, the hand’s path length, and the satisfaction levels of visually impaired individuals using three automatic cueing modalities: pitch sonification, verbal, and vibration. We recruited 30 visually impaired individuals (11 women, average age 39.6 ± 15.0), who were asked to locate a small cube, guided by one of three cueing modalities: sonification (a continuous beep that increases in frequency as the hand approaches the cube), verbal prompting (“right”, “forward”, etc.), and vibration (via five motors, attached to different locations on the hand). The three cueing modalities were automatically activated by computerized motion capture systems. The subjects separately answered satisfaction questions for each cueing modality. The main finding was that the time to find the cube was longer using the sonification cueing (p = 0.016). There were no significant differences in the hand path length or the subjects’ satisfaction. It can be concluded that verbal guidance may be the most effective for guiding people with visual impairment to locate an object in a 3D space.

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Are there sex differences in muscle coordination of the upper girdle during a sustained motor task?

Abstract: Are there sex differences in muscle coordination of the upper girdle during a sustained motor task?,

Cited by 8 publications

References 47 publications

Sex differences in muscle activity and motor variability in response to a non-fatiguing repetitive screwing task

Sex differences in muscle activity and motor variability in response to a non-fatiguing repetitive screwing task

The impact of musculoskeletal pain and strenuous work on self-reported physical work ability: a cohort study of Swedish men and women

Comparing Performance and Preference of Visually Impaired Individuals in Object Localization: Tactile, Verbal, and Sonification Cueing Modalities

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