Search results for "Squatting position"
showing 7 items of 7 documents
Evidence of a preprogrammed deactivation of the hamstring muscles for triggering rapid changes of posture in humans
1997
Normal subjects were asked to make rapid flexions of the legs from a stationary initial standing posture in a self-paced mode. Because this movement implicates a rapid change in posture, questions were asked about the type of central command which must include the rupture of the erect posture and the accomplishment of the goal directed movement. Movements of the different segments of the body were recorded and analyzed using the optoelectronic ELITE system. Electromyographic (EMG) activities of 8 muscles of the lower limb on one side were recorded, rectified and integrated. The time relationships of the different EMG signals (activation or deactivation) were analyzed with respect to selecte…
Influence of aging on the mechanical behavior of leg extensor muscles.
1980
Age dependence of the mechanical behavior of leg extensor muscle was investigated using vertical jumps with and without a stretch-shortening cycle on the force-platform. A total 226 subjects (113 females and 113 males) ranging in age from 4--73 years were examined. The results indicated in general that performance in males was better than that in females. This difference was reduced when body weight was taken into consideration. The peak performance of the various parameters, such as average force, height of rise of center of gravity, net impulse, and also the average power output, was reached in both sexes between the ages of 20 and 30 years. For example, the average vertical force in squa…
Occupations of Housing and Social Centers in Rome: A Durable Resistance to Neoliberalism and Institutionalization
2017
Squatting for housing and social centers has a long tradition in Rome since the end of the 1960s. By the mid-1970s, the occupation of buildings to set up political and social activities became part of the repertoire of left radical movements. In this chapter a set of 34 squatted spaces for housing and social centers in Rome active in 2014 is analysed. Squatting practices thus provide a lens to interpret the evolution of urban struggles, urban development and the changing sociopolitical contexts. Furthermore, Mudu and Rossini examine the role played by the processes of neutralization, co-optation, normalization and contention that explain the institutionalization of squatting in the city of …
Knee osteoarthritis in former runners, soccer players, weight lifters, and shooters.
1995
Objective. To determine the relationship between different physical loading conditions and findings of knee osteoarthritis (OA). Methods. We selected 117 male former top-level athletes (age range 45–68 years) who had participated in sports activities with distinctly different loading conditions: 28 had been long-distance runners, 31 soccer players, 29 weight lifters, and 29 shooters. Histories of lifetime occupational and athletic knee loading, knee injuries, and knee symptoms were obtained, and subjects were examined clinically and radiographically for knee findings of OA. Results. The prevalence of tibiofemoral or patellofemoral OA based on radiographic examination was 3% in shooters, 29%…
Electromechanical behaviour of human muscles in vertical jumps
1982
The relationships of muscle structure to the potentiation of myoelectrical activity and to the use of prestretching in five lower limb muscles were studied in different vertical jumping conditions. The subjects for the study were six male students, divided according to the muscle fiber distribution in m. vastus lateralis into “fast” and “slow” groups. The subjects performed vertical jumps (1) from a static squatting position (SJ), (2) with a preliminary counter movement (CMJ) and (3) after dropping (DJ) from five different heights. Myoelectrical (EMG) activity was recorded from mm. gluteus maximus, vastus lateralis, vastus medialis, rectus femoris and gastrocnemius in each jumping condition…
Directly Observed Physical Activity and Fundamental Motor Skills in Four-Year-Old Children in Day Care
2016
Physical activity (PA), its location, social interactions and fundamental motor skills (FMS) were investigated in four-year-old Finnish children in day care. Six skills in the stability, locomotor and manipulative domains were assessed in 53 children (24 boys, 29 girls, normal anthropometry) with the APM-Inventory manual for assessing children’s perceptual and FMS and Total Motor Scores (TMS; 0–6 points) calculated. PA intensity, location, group composition and activity type − sitting, squatting, kneeling − were directly observed with a modified version of the Observational System for Recording Physical Activity in Children – Preschool Version (OSRAC – P) during three consecutive days in 14…
Keep Your Piece of Cake, We’ll Squat the Bakery! Autonomy Meets Repression and Institutionalisation
2017
Squatting is usually subject to institutionalisation, co-optation and repression. Legalisation of the squats is also a controversial issue among activists. This chapter provides an overview of these topics in Central-Northern European cities (Berlin, Copenhagen and Paris) and Southern European cities (Madrid, Barcelona and Rome). The authors explore how local authorities respond to squatting in different protest cycles and the consequences of those responses. Resistance to negotiations and legalisation are eventually considered within the framework of the anti-capitalist orientation of most squatters’ movements. Furthermore, the authors’ comparison across cities takes into account local con…