vocalizing, as well as imitation and general motor activity ( Trevarthen, 1986 ). However, the contribution of motor behavior to early communication and its development has seldom been studied. According to Thelen ( 1981 ), very early on, the repetitive nature of infants’ rhythmic movements lends them a
Marianne Jover, Mathilde Cellier and Celine Scola
Richard Mulholland Jr. and Alexander W. McNeill
The purpose of the study was to evaluate the effects of physical activities on the cardiovascular performances of three institutionalized, profoundly retarded, multiply handicapped children. Heart rates were recorded during the completion of selected motor activities using a combination of telemetered electrocardiograms (ECG) and standard wireless microphone/video technology. Each subject participated in the experiment for a minimum of 6 weeks. The relationships between mean heart rates and performance times for each subject were evaluated throughout the experiment. Based upon the data collected, it was concluded that gross motor activities may have a significant effect on the cardiorespiratory functioning of profoundly retarded, multiply handicapped children, provided the activities are performed for an extended period of time and on a regular basis. The activities selected for use in this study were developmentally based, and no special consideration was given to their aerobic demands on the subjects. The subjects’ level of functioning dictated the use of developmental criteria rather than other, more fitness oriented, criteria that are usually applied to nonhandicapped individuals.
Richard Mulholland Jr. and Alexander W. McNeill
This study compared the heart rate responses of two profoundly retarded, multiply handicapped children during the performance of closed-skill fine motor activities and open-skill gross motor activities. The fine motor skills were typical classroom activities, and the gross motor skills were a part of each child’s special physical education programming. Heart rates were recorded for 20-sec intervals from the onset of the performance of each skill until the task objective was obtained. Based upon the results of this study, we concluded that the closed-skill fine motor classroom activities induce physiological stress at levels never before suspected. It is suggested that the dramatic heart rate responses may result from a hyposensitive condition of the spindle afferents, the gamma efferents, and the kinesthetic joint receptors, or from a breakdown in the retrieval of the stored motor program resulting in inappropriate spatial and temporal summation. As a result of the heart rate responses, it is suggested that classroom learning programs may need to be redesigned to accommodate for fatigue in this type of child.
Angela Maria Hoyos-Quintero and Herney Andrés García-Perdomo
scheduling at the preschool level was Bonvin, who found a connection between a schedule set aside especially for motor activities in the class timetable and the performance of PA. For Bürgi et al, 20 Dowda et al, 13 Gubbels et al, 14 Spurrier et al, 15 and Xu et al, 16 the fact that the mother did PA
Levy Silva Rezende, Markus Brendon Lima and Emanuel Péricles Salvador
when this study was structured. The search was performed using descriptors (DeCS/MeSH) or keywords, depending on the database used. The descriptors “motor activity” and “spinal cord disease” were searched in the PubMed and biblioteca virtual em saúde (BVS) databases, whereas the terms “motor activity
L. R. Brawley, R. C. Powers and K. A. Phillips
This experiment examined if a general expectancy for male superiority biased subjective evaluation of motor performance. Alternatively, sex bias could be specific to tasks involving muscular work. If the former, rather than the latter explanation is viable, a bias favoring males would be generalized to a task not obviously sex typed: motor accuracy. Observers, 22 of each sex, watched the softball pitching accuracy of performers of both sexes. Performer accuracy was trained and tested to ensure equality. Observers estimated preperformance accuracy, then observed three throws, estimating postperformance after each. Unlike the muscular endurance experiments, neither preperformance nor postperformance analysis revealed a sex bias. Thus a task-specific expectancy rather than general expectancy for male superiority was suggested to explain evaluation sex bias of previous muscular endurance experiments. Surprisingly, mean error magnitude of postperformance estimates was significantly greater for performers observed second than those viewed first, although actual performer accuracy was not different. This finding appears analogous to psychophysical judgment results in which successive stimulus judgments were conditions sufficient to cause estimation error. Suggestions are made for future research.
Robert L. Woolfolk, Shane M. Murphy, David Gottesfeld and David Aitken
An investigation was carried out concerning the effect of imagery instructions on a simple motor skill accuracy task (putting a golf ball). Male college students (N = 50) were randomly assigned to one of six experimental conditions in a design that allowed the presence or absence of mental rehearsal of the physical movements involved in the task to be completely crossed with the imaginal depiction of task outcome (successful, unsuccessful, or no outcome component). A significant outcome by trials interaction was found on task performance. This finding reflected the degradation of performance in the conditions employing negative outcome imagery rather than any enhancement of performance by positive outcome imagery. Self-efficacy was found to be correlated with performance, but this association seemed to be a by-product of the strong relationships between these variables and performance on the previous trial. Results are discussed in relation to the existing literature, and future research directions are delineated.
Cristiano Marcellino, Ruth Liane Henn, Maria Teresa Anselmo Olinto, Ana Weigert Bressan, Vera Maria Vieira Paniz and Marcos Pascoal Pattussi
Physical inactivity is one of the most important modifiable risk factors that is raising the global burden of chronic diseases.
This is a cross-sectional, population-based study of 790 women aged 20 years or older living in the urban area of a municipality in Southern Brazil. The level of physical activity was measured using the International Physical Activity Questionnaire, short form. Inactivity was defined as fewer than 150 min/wk−1 spent in moderate or vigorous physical activities. Prevalence ratios were calculated by robust Poisson regression.
The prevalence of physical inactivity was 48.7% (95% CI, 43.3%–54.1%). After adjusting for confounders, we found a linear trend for increasing prevalence of physical inactivity with increasing body mass index (P = .008). Women who were married or in a domestic partnership were 29% less physically active than single women (P = .044). A borderline association was detected between the presence of minor psychiatric disorders (MPD) and physical inactivity (P = .058).
There was a high prevalence of inactivity. Obese women, those married or in domestic partnerships and those with MPD were more likely to lead an inactive lifestyle. These results suggest that strategies are required for breaking down barriers to physical activity in this demographic group.
Thiago Herick Sa, Emanuel Péricles Salvador and Alex Antonio Florindo
Physical inactivity in transportation is negatively related to many health outcomes. However, little is known about the correlates of this condition among people living in regions of low socioeconomic level.
Cross-sectional study aimed to assess factors associated with physical inactivity in transportation among adults in the Eastern Zone of São Paulo, Brazil. Home-based interviews were conducted between May 2007 and January 2008 on a probabilistic sample of the adult population (≥18 years), totaling 368 men and 522 women. Factors associated with physical inactivity in transportation (less than 10 minutes per week of walking or cycling) were assessed using multivariate Poisson regression with hierarchical selection of variables.
Physical inactivity in transportation was associated with the presence of vehicles in the household in men (PR = 2.96) and women (PR = 2.42), with linear trend for both sexes (P < .001 and P = .004, respectively), even after adjusting for age, schooling level and chronic diseases (this last factor, only among women).
Presence of vehicles in the household was associated positively with physical inactivity in transportation, both for men and for women. This should be taken into consideration in drawing up public policies for promoting physical activity.
André O. Werneck, Edilson S. Cyrino, Paul J. Collings, Enio R.V. Ronque, Célia L. Szwarcwald, Luís B. Sardinha and Danilo R. Silva
Background: This study describes the levels and patterns of television (TV) viewing in Brazilian adults and investigates associations of TV viewing with hypertension, type 2 diabetes, and heart disease. Methods: Data from the Brazilian Health Survey, a nationally representative survey that was conducted in 2013 (N = 60,202 men and women aged ≥18 y), were used. Information regarding TV viewing, physician diagnoses of type 2 diabetes, hypertension, and heart disease was collected via interview-administered questionnaire. Data on covariables (including chronological age, educational status, skin color, sodium consumption, sugar consumption, tobacco smoking, alcohol consumption, and leisure-time physical activity) were also self-reported. Logistic regression models and population attributable fractions were used for the etiological analyses. Results: The prevalence (95% confidence interval) of >4 hours per day of TV viewing was 12.7% (12.0–13.4) in men and 17.5% (16.8–18.3) in women. Men and women being younger or older, moderately educated, living alone, smoking tobacco, and drinking alcohol were associated with higher reported TV viewing time. Odds ratios (95% confidence interval) revealed that >4 hours per day of TV viewing was associated with type 2 diabetes [male: 1.64 (1.23–2.17) and female: 1.33 (1.09–1.63)], hypertension [male: 1.36 (1.14–1.63) and female: 1.20 (1.05–1.37)], and heart disease [male: 1.96 (1.43–2.69) and female: 1.30 (1.00–1.68)]. Exceeding 4 hours per day of TV viewing was responsible for 6.8% of type 2 diabetes, 3.7% of hypertension, and 7.5% of heart disease cases. Conclusions: Independent of covariates, >4 hours per day of TV viewing was associated with type 2 diabetes, hypertension, and heart disease. High volumes of TV viewing are prevalent and appear to contribute to chronic disease burden.