Objective To compare, landing mechanics and electromyographic activity of the lower extremities during side hopping and crossover hopping maneuvers, in noninjured women and women with anterior cruciate ligament (ACL) reconstruction. Design A case-control study. Setting A 3-dimensional motion analysis laboratory. Participants Twenty-eight young women (range, 21–35 years) (15 control subjects and 13 subjects with ACL reconstruction). Patients and Methods All participants performed a side-to-side hopping task that consisted of hopping single-legged 10 times consecutively from side to side across 2 lines marked 30 cm apart on 2 individual force plates. The task was designated as a side hopping when the hop was to the opposite side of the stance leg and as crossover hopping when the hop was toward the side of the stance leg. Main Outcome Measurements Peak hip-/knee-joint angles; peak knee extension/abduction joint moments; electromyographic studies of the gluteus maximus, gluteus medius, rectus femoris, and hamstring muscles; and quadriceps/hamstring co-contraction ratio were compared between the groups by means of 2 × 2 multivariate analysis of variance tests (group × maneuver). Results Noninjured women and women with ACL reconstruction exhibited similar hip-and knee-joint angles during both types of hopping. Hip-joint angles were greater during the crossover hopping in both groups, and knee-joint angles did not differ between the groups or hops. Knee-joint moments demonstrated a significant group × maneuver interaction. Greater knee extension and valgus moments were noted in the control group during crossover hopping, and greater knee abduction moments were noted in the ACL group during side hopping. Electromyographic data revealed no statistically significantly differences between the groups. Conclusions Women with ACL reconstruction exhibited the restoration of functional biomechanical movements such as hip-/knee-joint angles and lower extremity neuromuscular activation during side-to-side athletic tasks. However, not all biomechanical strategies are restored years after surgery, and women who have undergone a procedure such as ACL reconstruction may continue to exhibit knee-joint abduction moments that increase the risk of additional knee injury.

Introduction: The Community Healthy ActivitiesModel Program for Seniors (CHAMPS) is a physical activity monitoring questionnaire for people between 65 to 90 years old. This questionnaire has been previously translated to Spanish to be used in the Latin American population.Purpose: To adapt the Spanish version of the CHAMPS questionnaire to Puerto Rico and assess its internal consistency.Methods: An external review committee adapted the existent Spanish version of the CHAMPS to be used in the Puerto Rican population. Three older adults participated in a second phase with the purpose of training the research team. After the second phase, 35 older adults participated in a third content adaptation phase. During the third phase, the preliminary Spanish version for Puerto Rico of the CHAMPS was given to the 35 participants to assess for clarity, vocabulary and understandability. Interviews to each participant in the third phase were carried out to obtain feedback and create a final Spanish version of the CHAMPS for Puerto Rico. After analyses of this phase, the external review committee prepared a final Spanish version of the CHAMPS for Puerto Rico. The final version was administered to 15 older adults (76 ± 6.5 years) to assess the internal consistency by using Cronbach's Alpha analysis.Results: The questionnaire showed a strong internal consistency of 0.76. The total time to answer the questionnaire was 17.4 minutes.Conclusion: The Spanish version of the CHAMPS questionnaire for Puerto Rico suggested being an easy to administer and consistent measurement tool to assess physical activity in older adults.

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Motor-Cognitive alterations (MCAs) are associated with HIV infection and antiretroviral therapy. MCAs create a profound negative impact on their independence causing a burden to caregivers and the health care system. At early stages of the HIV disease, mild MCAs affecting the central nervous system can be identified in individuals with HIV, however, these MCAs increase in severity as time and the condition progress. Despite the prominence of these traits among individuals with HIV, the manifestation and severity of these MCAs are not linear. Purpose:The aim of this project to assess the impact of medication with MCA's and comorbidities among Hispanics with HIV.Methods: Data was collected from 575 out of 1,300 participants' record. Variables related to cd4, blood work, urinalysis, physical activity, and demographics (age, year with diagnosis) we're collected. Data analysis of this study utilizes two types of analysis univariate and bivariate for demographic profile data and to identify correlation of multiple comorbidities and antiretroviral therapy. Then a Pearson chi square was used for the relationship analysis between peripheral neuropathy and antiretroviral therapy. The majority of the subjects were male aged between 81/2-and 451/2-years old living with HIV diagnosis. Mainly, Participants were categorized as having the HIV diagnosis with a cd4 cell count of 598 ± 346.8 cells/uL with a nondetected viral load.Results: showed the mains comorbidities among individuals with HIV are hypertension 28%, depression 25%, peripheral neuropathy 23.6%. A poor relationship between peripheral neuropathy and individuals with HIV was found using between 2-3 antiretroviral therapy. However, it was not statistically significant (X² (2)> = 1.509, p = .470). Conclusion:Hispanic living with HIV, MCA's manifest as depression and in some extent peripheral neuropathy. We suggest cardiovascular and psychological testing to all participants suffering with HIV. Additional studies are encouraged for strength test, cardiovascular assessment and physical activity evaluation among these subjects.

Introduction: The XPO Trainer used in this research is a novel device which provides low rolling resistance at low speeds with an immediate and automatic proportional increase in resistance with increased speed. Purpose: To examine the impact of using the XPO Trainer on gait and neuromuscular activation at low and high speeds in young, seemingly healthy adults. Materials and Methods: This work consisted of 35 healthy adults (age: 24.9 ± 3.2 years, weight: 149.8 ± 8 lbs, height: 66.6 ± 4.4 inches). Each participant wore accelerometers/gyroscopes sensors around each wrist and ankle, chest, and low back and surface electromyography (EMG) electrodes on their dominant leg over the quadriceps (QUAD), hamstring (HAM), anterior tibialis (TA), and gastrocnemius (GA). To initiate the tasks, participants walked then ran 40 feet with and without the XPO Trainer sled. Subjects did a total of 3 trials per tasks (total of 12) with one minute of rest between tasks to reduce fatigue factor. The data from the EMG and Mobility Lab sensors were then processed and compared through the SPSS 24 system for a repeated-measures ANOVA. Results: EMG-The QUAD muscle exhibited a substantial higher muscle activation between walk (45.39 ± 24.43) and walk push (74.40 ± 56.73) tasks. Gait Parameters-There was a significant modification (p ≤ .05) between the different gait variables and tasks, including cadence, gait speed, stride length and trunk velocity while pushing the sled. Conclusion/Clinical Relevance: With the XPO Trainer being a novel device, it is important to understand how it affects the activation and response for muscles during different activities before using it as a training tool. Understanding the effect this particular sled can provide on the different components of the (temporospatial) gait parameters and muscle activation is valuable for a clinically appropriate application to specific populations.