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Influence of surgery and rehabilitation conditioning on psychophysiological fitness
The purpose of this study was to assess changes in psychophysiological fitness following reconstructive knee surgery and early phase (2.5 months) physical rehabilitation. Nine patients (7 male, 2 female; mean age, 29.9 years) electing to undergo anterior cruciate ligament reconstructive surgery (central third, bone-patella tendon-bone graft) were assessed on four separate assessment occasions post-surgery. Repeated measures ANOVAs showed significant condition (injured/non-injured leg) by test occasion (2 weeks pre-surgery and 6, 8 and 10 weeks post-surgery) interactions for knee ligamentous compliance (anterior tibiofemoral displacement), peak force and electromechanical delay associated with the knee flexors of the injured and noninjured legs (F3,24 = 4.7 to 6.6; p < 0.01), together with individualized emotional profile disturbance scores that were significantly less at 10 weeks post-surgery compared to pre-surgery, 6 weeks and 8 weeks post-surgery (F3,24 = 7.6; p < 0.01). Spearman rank correlation coefficients identified significant relationships between musculoskeletal fitness and emotional profile scores at pre-surgery (r = 0.69ā0.72; p < 0.05) and at 8 weeks post-surgery (r = 0.70ā0.73; p < 0.05). The 6 Bi-POMS subscales and the 12 ERAIQ responses found inconsistent patterns of response and relationships across the assessment occasions. Overall, the patterning of changes and associations amongst emotional performance profile discrepancy scores in conjunction with those scores from indices of musculoskeletal fitness performance capability offered important support for the efficacy of an approach which integrates self-perceptive and objective measurements of fitness capability during rehabilitation following surgery to a synovial joint
A 14-day ground-based hypokinesia study in nonhuman primates: A compilation of results
A 14 day ground based hypokinesia study with rhesus monkeys was conducted to determine if a spaceflight of similar duration might affect bone remodeling and calcium homeostatis. The monkeys were placed in total body casts and sacrificed either immediately upon decasting or 14 days after decasting. Changes in vertebral strength were noted and further deterioration of bone strength continued during the recovery phase. Resorption in the vertebrae increased dramatically while formation decreased. Cortical bone formation was impaired in the long bones. The immobilized animals showed a progressive decrease in total serum calcium which rebounded upon remobilization. Most mandibular parameters remained unchanged during casting except for retardation of osteon birth or maturation rate and density distribution of matrix and mineral moieties
Thermodynamic calculations of oxygen self-diffusion in mixed-oxide nuclear fuels
Molecular dynamics calculations are used to provide a self-consistent prediction of the elastic, thermal expansion and oxygen self-diffusion properties of mixed oxide nuclear fuels at arbitrary compositions.</p
Atributos quĆmicos do solo sob diferentes sistemas de irrigaĆ§Ć£o e manejo do solo para cultura do arroz.
Atributos quĆmicos do solo sob diferentes sistemas de irrigaĆ§Ć£o e manejo do solo para cultura do arroz.
AvaliaĆ§Ć£o de cultivares de arroz irrigado em condiƧƵes de cultivo de terras altas sob irrigaĆ§Ć£o por aspersĆ£o.
O uso de cultivares de arroz irrigado em condiƧƵes de cultivo para arroz de terras altas, no Cerrado brasileiro, com manejo de irrigaĆ§Ć£o por aspersĆ£o abre perspectivas de utilizaĆ§Ć£o desse sistema para o processo de produĆ§Ć£o de sementes. Neste sentido o trabalho objetiva avaliar a resposta de cultivares de arroz irrigado sob irrigaĆ§Ć£o por aspersĆ£o em condiƧƵes de cultivo de arroz de terras altas
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