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Studies were conducted on a group of 31 wood cutters in Norway, in October and November, 1989, to determine the correlation between age factor and physical output and exertion. Maximum oxygen intake, heart rate, and blood pressure recordings were measured under varying work loads. Results showed that work output is not affected by age, and work intensity corresponds to aerobic work capacity.

The present work validated minimal performance standards for a lower-limb functional capacity test used at enrollment to predict the risk of discharge from strenuous military ranger training in the Swedish Armed Forces. To set a relevant level of performance, trained conscripts in a ranger unit (n = 38) performed a maximal physical fitness test, including the newly developed ranger test, during the last week of their 1-year basic training. The following year, basic training started with an initial strength test performed by all conscripts (n = 285). They performed the ranger test as a submaximal one. The relative risk was high (risk ratio, 48.5) for discharge attributable to knee problems for conscripts who failed the submaximal ranger test during the initial strength test. The area under the receiver operating characteristic curve was 0.91 (SE, 0.09) for failing the test. The submaximal ranger test had a high discriminating ability and predictive value for discharge caused by knee problems. [ABSTRACT FROM AUTHOR]

OBJECTIVE: The aim of this study was to investigate the construct validity of 6 physical performance tests that had already been shown to have acceptable repeatability. DESIGN: Data were collected in a randomized controlled multi-centre study. SUBJECTS: 126 women and 105 men sick-listed for spinal pain carried out the tests and provided personal and background data at inclusion in the study. METHODS: One test measured stepping up onto and down from a stool, 2 measured lifting ability and 3 walking speed. Construct validity was examined by analysing the influence of some variables on test performance. RESULTS: High-rated pain behaviour and perceived high pain intensity during testing or during the previous 4 weeks were connected with low test performance. Exercise twice a week was connected with high test performance. The test with the highest ability to detect disability in the women with lumbar pain was a lumbar lifting test, while for the men, it was a cervical lifting test. The test with the highest ability to detect disability in the participants with neck pain was the cervical lifting test in addition to a gait test with burden for the women. CONCLUSION: Back pain hampered the test performance more than neck pain. Impairments and activity limitations expressed by the patient should guide the choice of test. [ABSTRACT FROM AUTHOR]

Muscle resistance was evaluated by measurement of movement-provoked torque performed during simultaneous thigh muscle EMG recordings in individuals with a motor complete spinal cord injury (SCI). Fifteen men with a motor complete (ASIA grade A or B) cervical injury participated in the study. The activity started at an average of 0.11 seconds after the start of the provoking movement as evidenced by EMG recordings. However, no activity at all was found before the end of the movement provocation for 0.3 seconds in >60% of the test situations, whereas muscle torque was recorded in all cases. Significantly higher resistive muscle torque (p = 0.049) was provoked during extension movement compared with that of flexion. On the contrary, the maximum muscle activity was significantly higher (p = 0.009) during flexion movement compared with that during extension, with no differences between muscle groups. The resistive muscle torque seems to measure the passive viscoelastic component rather then the active spastic component of the movement-provoked muscle resistance in our group of motor complete SCI individuals. [ABSTRACT FROM AUTHOR]

The effect of functional electrical stimulation (FES) training on body composition, assessed by computed tomography, and the effect of spasticity, assessed by both objective and subjective measures, are evaluated. Fifteen motor-complete spinal-cord-injured men participated in the study. Eight of the 15 subjects undertook FES cycling 3 times weekly for 6 months. Whole body computed tomography scans evaluated changes in body composition. Simultaneous Modified Ashworth Scale and electromyography (EMG) measurements, resistive torque (Kin-Com) and EMG measurements, and self-ratings with Visual Analogue Scale during four consecutive days were used to evaluate changes in spasticity. Lower extremity muscle volume increased by an average of 1300 cm3 (p < 0.001) in the training group compared to the control group, who experienced no change. Otherwise no changes in body composition were seen. Significant correlations (Spearman) were found between individual EMG activity recordings and movement-provoked Modified Ashworth Scale ratings in 26% of the test situations, irrespective of group and time. The objective and subjective evaluation of movement-provoked passive (viscoelastic) and active (spasticity-related) resistance remained unchanged. [ABSTRACT FROM AUTHOR]

A questionnaire about assistive devices for lift and transfer was distributed to all individuals evaluated at the Solberga Project outpatient service unit, a regional centre for long-term follow-up of severely brain injured persons in the Greater Stockholm area. The target group was 60 severely brain injured adults, of whom 57 (30 women and 27 men) answered a questionnaire created by one of the authors. The causes of injury in the study population were trauma (n = 27), cerebrovascular accident (n = 19), anoxia (n = 10) and other (n = 1). Thirty-two persons were quadriplegic after the injury and 21 were hemiplegic. More than half (33/57) reported problems with all five defined lift and transfer situations. Most (42/44) reported problems getting in and out of their wheelchairs. Technical aids were seldom used; 24 persons did not use any aids at all. The most commonly used aid was an adjustable bed. Most of the technical aids were used when the individual also had personal assistance. The persons who managed lift and transfer by themselves used few aids. It is reasonable to assume that severely brain injured individuals would be involved in more activities if they used technical aids more readily. [ABSTRACT FROM AUTHOR]

The aim was to compare static and dynamic shoulder rotator endurance training in a group of women with mild rheumatoid arthritis and to see whether such training could influence impairment, disability, and handicap. The effects on general health were also studied. Patients were randomly assigned to a static (n = 17) (average age 59, median disease duration 7) or a dynamic training group (n = 20) (average age 56, median disease duration 10.5). Measurements were taken at the start, 10 weeks later when the training period was finished, and after a further 10 weeks. After the training both groups had fewer swollen joints in the upper extremity and less shoulder-arm pain. The dynamic group patients also improved according to the physical and overall dimensions of the Sickness Impact Profile. As impairment and aspects of disability and handicap were influenced by training but not by the patients' opinions regarding perceived disease activity and health, these relationships must be studied further. [ABSTRACT FROM AUTHOR]