Search results for "Time and Motion Studies"
showing 10 items of 16 documents
The effect of visual focus on spatio-temporal and kinematic parameters of treadmill running
2017
The characteristics of a treadmill and the environment where it is based could influence the user’s gaze and have an effect on their running kinematics and lower limb impacts. The aim of this study was to identify the effect of visual focus on spatio-temporal parameters and lower limb kinematics during treadmill running. Twenty six experienced runners ran at 3.33 m s−1 on a treadmill under two visual conditions, either looking ahead at a wall or looking down at the treadmill visual display. Spatio-temporal parameters, impact accelerations of the head and tibia, and knee and ankle kinematics were measured for the final 15 s of a 90 s bout of running under each condition. At the end of the te…
Knee Extensor Muscle Strength Is More Important Than Postural Balance for Stair-Climbing Ability in Elderly Patients with Severe Knee Osteoarthritis.
2021
Knee osteoarthritis is a chronic joint disease which damages articular cartilage. In its severe stages, it results in impairments in balance and muscle strength loss, which affect daily life activities such as walking or climbing stairs. This study sought to investigate associated factors with stair-climbing ability in this population, with special interest in measuring the relevance of postural balance for this task. Forty-four patients scheduled to undergo unilateral total knee arthroplasty were assessed. Timed up and go test, stair ascent–descent test, three different isometric strength tests (knee flexion, knee extension and hip abduction), active knee extension and flexion range of mov…
An easy and safe training method for trunk function improves mobility in total knee arthroplasty patients: A quasi-randomized controlled trial
2018
Objective Total knee arthroplasty (TKA) is aimed mainly at reducing pain and restoring mobility. However, mobility deficits can persist even longer than 1 year. The trunk function and movement velocity of any region have been recently recognized to be critical for determining mobility in older people. Therefore, the main goal of this quasi-randomized trial is to clarify the effectiveness of a novel training method, the seated side tapping (SST) training, for improving mobility by focusing on movement velocity of trunk function in the short term after TKA. Methods SST training consists of side trunk movements repeated as quickly as possible in a seated position. All participants after TKA we…
Excessive daytime sleepiness is associated with an increased frequency of falls and sarcopenia.
2021
Background:\ud \ud This cross-sectional study aimed to examine associations between excessive daytime sleepiness (EDS) with falls and falls related conditions in older adults.\ud \ud Methods:\ud \ud To assess EDS, the Epworth Sleepiness Scale was used, with a score of ≥11/24 points indicating EDS. Number of falls and fall history (at least one) in the last year were recorded. Timed Up and Go test (TUG) was used to assess fall risk. Sarcopenia was defined by SARC-F tool. A grip strength score of the dominant hand, measured with a hand-grip dynamometer, less than 16 kg in females and 27 kg in males was accepted as dynapenia. Frailty status was defined by five dimensions including shrinking, e…
Setting standards and implementing quality improvement in trauma care
1996
Setting standards and implementing quality improvement in trauma care needs consideration of the definitions of standards, guidelines, recommendations and the present quality of trauma care. Essential factors for consideration are the chain of survival and different intervals which may decide on patient outcome: (a) the trauma (occurrence) to trauma recognition interval which has, until now, not been taken into consideration with regard to morbidity and mortality; (b) the scene time is part of the total prehospital time which comprises rescuing the entrapped patient, preparation of the patient for treatment, and transfer to a rescue vehicle. The medical part of the scene time, however, repr…
Impact of an ambulatory physical activity program on balance and motor abilities of retirees: a prospective study
2020
International audience; BACKGROUND:Given the public health problem generated by posture and gait disorders, a preventive approach is essential.OBJECTIVE:We investigated the impact of an ambulatory physical activity program (APAP) on the motor skills of retirees.METHOD:Retirees ≥ 60 years were recruited in this prospective study. The APAP was supported by a French regional health insurance plan. Between inclusion (T0) and 12 weeks (T1), subjects participated in an APAP (1 hour/week) that included strengthening muscular exercises, balance work, joint flexibility exercises, one-leg-balance test (OLB), stimulation of the foot arch, and rise-from-the-floor (RFF). Timed-up-and-go test (TUG) durat…
The influence of wearing ski-boots with different rigidity characteristics on postural control
2018
External supports that reduce ankle joint mobility such as ski-boots can impair postural control of healthy participants. Although this disruptive effect has been attributed to the rigidity of the external supports, the results remained controversial and no study has been conducted in order to evaluate the influence of ski-boots rigidity. Hence, the question about the influence of ankle support rigidity on postural control remains open. This study was therefore undertaken in order to investigate the effect of ski-boots rigidity on postural control. Ten healthy active participants were recruited. The wearing of soft and rigid ski-boots was compared to barefoot while standing on a seesaw gene…
Cognitive and motor effects of Kinect‐based games training in people with and without Parkinson disease: A preliminary study
2019
Objective Purpose of this study is to evaluate the effects of training with six commercial Xbox KinectTM games on cognitive and motor aspects in Parkinson's disease (PD) patients and to compare the effects with a group of paired healthy subjects. Methods This study was a quasi-experimental, controlled trial. Eight individuals with PD (mean age 68.9 ± 7.9) and eight older adults without PD, matched by age (mean age 67.6 ± 7.3) were enrolled in the study. Ten sessions of six Xbox 360 KinectTM commercial games were performed for 5 weeks. Subjects were evaluated before and 7 and 30 days after intervention. They were assessed using Montreal Cognitive Assessment, Frontal Assessment Battery (FAB),…
Time and frequency analysis of the static balance in young adults with Down syndrome
2010
The main objective of this study is to understand the differences in equilibrium control between normal subjects and those with Down syndrome. A total of 54 subjects participated voluntarily, divided into control group and Down syndrome group. The equilibrium of the subjects was tested under two conditions: bipedal support with eyes open and closed. The signals were analyzed in a time and frequency domain. The statistical parameters selected (i.e., RMS distance, mean velocity, mean frequency and sway area) to analyze the behavior of the center of pressures (CoP) are calculated employing the result of the combination of the time series data in both directions (i.e. resultant distance). In or…
The role and development of sprinting speed in soccer.
2013
Author's version of an article in the journal: International Journal of Sports Physiology and Performance. Also available from the publisher at: http://dx.doi.org/10.1123/IJSPP.2013-0121 The overall objective of this review was to investigate the role and development of sprinting speed in soccer. Time–motion analyses show that short sprints occur frequently during soccer games. Straight sprinting is the most frequent action before goals, both for the scoring and assisting player. Straight-line sprinting velocity (both acceleration and maximal sprinting speed), certain agility skills, and repeated-sprint ability are shown to distinguish groups from different performance levels. Professional …