Search results for "Medicina esportiva"
showing 8 items of 8 documents
The validity and reliability of a new instrumented device for measuring ankle dorsiflexion range of motion
2015
PURPOSE/BACKGROUND: A restriction in ankle dorsiflexion range of motion (ROM) has been linked to several clinical manifestations such as metatarsalgia, heel pain, nerve entrapment, ankle joint equinus, patellar and ankle injuries. The purpose of the present study was to examine the validity and reliability of the Leg Motion system for measuring ankle dorsiflexion ROM. STUDY DESIGN: Descriptive repeated-measures study. METHODS: Twenty-six healthy male university students were recruited to test the reliability of the Leg Motion system, which is a portable tool used for assessment of ankle dorsiflexion during the weight-bearing lunge test. The participants were tested two times separated by tw…
Spectral properties of muscle activation during incremental cycling test
2015
It is uncertain whether fatigue and workload would affect muscle recruitment during cycling. To infer on changes in priority for recruitment of motor units, we assessed the combined effects of fatigue and workload during an incremental cycling test to exhaustion on frequency components of lower limbs muscle activation. Competitive cyclists performed an incremental maximal cycling test while muscle activations were recorded from the right and left vastus lateralis, biceps femoris and gastrocnemius medialis. Muscle activation signals were assessed using frequency band analyses and decomposed into overall, high and low frequency bands. Combined effects from workload/fatigue were assessed using…
Técnica Semidirecta de Thrust para una Disfunción en Rotación del Atlas, con contacto indexial
2012
Debido a sus grandes diferencias, anatómicas y funcionales, el estudio de la región craneocervical se separa del resto de la columna cervical. El complejo craneocervical se considera responsable de signos y síntomas muy diferentes a los que encontramos en el raquis cervical inferior, como por ejemplo vértigos, cefaleas de distinto origen, etc. El objetivo de la técnica de thrust para una disfunción en rotación del atlas con contacto indexial es devolver la movilidad y funcionalidad a la vértebra. Es importante dominar los principios básicos de realización de la técnica para poder aplicar una correcta intervención terapéutica tras haber descartado los posibles riesgos de la manipulación.
Importance of static adjustment of knee angle to determine saddle height in cycling
2016
Knee flexion angle is used to determine saddle height during pedaling. However, it is unclear if knee flexion angle at upright standing posture affects measures and interpretation of knee flexion angle during cycling. The objective of this study was to assess the importance of adjusting knee angle during pedaling according to the knee angle at upright posture. Seventeen cyclists performed three 10 min cycling trials at different saddle heights to induce knee flexion angles (40º, 30º or 20º when crank was at the 6 o'clock position). Knee flexion angle was determined at the sagittal plane during cycling using a 2D motion analysis system. Alteration of saddle height was performed by subtractin…
Plantar pressure and foot temperature responses to acute barefoot and shod running
2015
AbstractPurpose. Increased contact pressure and skin friction may lead to higher skin temperature. Here, we hypothesized a relationship between plantar pressure and foot temperature. To elicit different conditions of stress to the foot, participants performed running trials of barefoot and shod running. Methods. Eighteen male recreational runners ran shod and barefoot at a self-selected speed for 15 min over different days. Before and immediately after running, plantar pressure during standing (via a pressure mapping system) and skin temperature (using thermography) were recorded. Results. No significant changes were found in plantar pressure after barefoot or shod conditions (p > 0.9). …
Pain Treatment for patients with osteoarthritis and central sensitization
2013
Osteoarthritis is one of the most frequent, disabling, and costly pathologies of modern society. Among the main aims of osteoarthritis management are pain control and functional ability improvement. The exact cause of osteoarthritis pain remains unclear. In addition to the pathological changes in articular structures, changes in central pain processing or central sensitization appear to be involved in osteoarthritis pain. The latter calls for a broader approach to the management of patients with osteoarthritis. Yet, the scientific literature offers scant information addressing the treatment of central sensitization, specifically in patients with osteoarthritis. Interventions such as cogniti…
Long-term effects of graduated compression stockings on cardiorespiratory performance
2015
ABSTRACT: The use of graduated compression stockings (GCS) in sport has been increasing in the last years due to their potential positive effects for athletes. However, there is little evidence to support whether these types of garments actually improve cardiorespiratory performance. The aim of this study was to examine the cardiorespiratory responses of GCS during running after three weeks of regular use. Twenty recreational runners performed three tests on different days: test 1) ¿ a 5-min maximal effort run in order to determine the participants¿ maximal aerobic speed; and tests 2) and 3) ¿ a fatigue running test of 30 minutes at 80% of their maximal aerobic speed with either GCS or PLAC…
Effect of saddle height on skin temperature measured in different days of cycling
2016
Infrared thermography can be useful to explore the effects of exercise on neuromuscular function. During cycling, it could be used to investigate the effects of saddle height on thermoregulation. The aim of this study was to examine whether different cycling postures, elicited by different knee flexion angles, could influence skin temperature. Furthermore, we also determined whether the reproducibility of thermal measurements in response to cycling differed in the body regions affected or not affected by saddle height. Sixteen cyclists participated in three tests of 45 min of cycling at their individual 50 % peak power output. Each test was performed in a different knee flexion position on …