Eccentric cross-exercise after anterior cruciate ligament reconstruction: Novel case series to enhance neuroplasticity.

OBJECTIVES: Substantial changes in neural function are historically present after anterior cruciate ligament reconstruction (ACLR), and are not rectified with traditional rehabilitation. Cross-exercise is a potential means to enhance neural excitability and improve recovery after ACLR. Hence our purpose, was to detail changes in brain activation, neural excitability and patient-reported outcomes in a cohort that completed an 8-week quadriceps-focused eccentric cross-exercise training program immediately following ACLR. DESIGN: Case series. SETTING: University. PARTICPANTS: Five patients participated in an 8-week (24-session) eccentric cross-exercise intervention after ACLR. MAIN OUTCOME MEASURES: Brain activation, neural activity and patient-reported outcomes were evaluated within 2 weeks post-ACLR and again at 10-weeks post-ACLR after the intervention. Each cross-exercise session consisted of 4 sets of 10 isokinetic eccentric contractions at 60 deg/sec with the noninvolved limb. RESULTS: Following the intervention, patients demonstrated a facilitated spinal reflexive and muscle activity response from the motor cortex during a time when these measures are known to be depressed. Patients also demonstrated a reduce dependence on frontal cortex activity to generate quadriceps contractions. Further patients reported significant reductions in pain and symptoms and greater knee function. CONCLUSIONS: Eccentric cross-exercise after ACLR helps to facilitate positive adaptations in neural function and patient reported outcomes.

Quadriceps Function, Knee Pain, and Self-Reported Outcomes in Patients With Anterior Cruciate Ligament Reconstruction.

CONTEXT: Interactions among muscle strength, pain, and self-reported outcomes in patients with anterior cruciate ligament reconstruction (ACLR) are not well understood. Clarifying these interactions is of clinical importance because improving physical and psychological function is thought to optimize outcomes after ACLR. OBJECTIVE: To examine the relationships among neuromuscular quadriceps function, pain, self-reported knee function, readiness to return to activity, and emotional response to injury both before and after ACLR. DESIGN: Descriptive laboratory study. PATIENTS OR OTHER PARTICIPANTS: Twenty patients (11 females and 9 males; age = 20.9 ± 4.4 years, height = 172.4 ± 7.5 cm, weight = 76.2 ± 11.8 kg) who were scheduled to undergo unilateral ACLR. MAIN OUTCOME MEASURE(S): Quadriceps strength, voluntary activation, and pain were measured at presurgery and return to activity, quantified using maximal voluntary isometric contractions (MVICs), central activation ratio, and the Knee Injury and Osteoarthritis Outcome Score pain subscale, respectively. Self-reported knee function, readiness to return to activity, and emotional responses to injury were evaluated at return to activity using the International Knee Documentation Committee questionnaire (IKDC), ACL Return to Sport After Injury scale (ACL-RSI), and Psychological Response to Sport Injury Inventory (PRSII), respectively. Pearson product moment correlations and linear regressions were performed using raw values and percentage change scores. RESULTS: Presurgical levels of pain significantly predicted 31% of the variance in the ACL-RSI and 29% in the PRSII scores at return to activity. The MVIC and pain collected at return to activity significantly predicted 74% of the variance in the IKDC, whereas only MVIC significantly predicted 36% of the variance in the ACL-RSI and 39% in the PRSII scores. Greater increases in MVIC from presurgery to return to activity significantly predicted 49% of the variance in the ACL-RSI and 59% of the variance in the IKDC scores. CONCLUSION: Decreased quadriceps strength and higher levels of pain were associated with psychological responses in patients with ACLR. A comprehensive approach using traditional rehabilitation that includes attention to psychological barriers may be an effective strategy to improve outcomes in ACLR patients.

Athletic Trainers' Skills in Identifying and Managing Athletes Experiencing Psychological Distress.

CONTEXT: Athletic trainers (ATs) commonly use psychological skills during sport rehabilitation. However, little is known about their ability to accurately implement these skills. OBJECTIVE: To assess ATs' skills in identifying psychological symptoms, selecting appropriate strategies, and making referral decisions for athletes experiencing various degrees of psychological distress. DESIGN: Cross-sectional study. SETTING: Participants were recruited using the National Athletic Trainers' Association professional member database. PATIENTS OR OTHER PARTICIPANTS: Of the 2998 ATs who were selected randomly, 494 (16.5%) partially completed the questionnaire and 326 (10.9%) completed the entire survey (mean age = 34.7 ± 10.8 years, mean years of experience = 11.3 ± 9.9). MAIN OUTCOME MEASURE(S): Using the Web-based questionnaire created for this study, we collected ATs' demographic information and assessed their perceptions about responsibilities as ATs, psychosocial competencies, training in sport psychology, and referral behaviors. Additionally, respondents were asked to identify symptoms, match psychological strategies (eg, goal setting, imagery, progressive muscle relaxation), and make referral decisions for athletes in 3 case vignettes. RESULTS: The ATs demonstrated high accuracy in identifying symptoms and making referral decisions but struggled in selecting appropriate psychosocial strategies for athletes. Stepwise regression analyses revealed that ATs who had had specific coursework in sport psychology were able to more accurately identify symptoms (t = 3.01, P < .01), and those ATs with more experience reported lower accuracy scores for their intended course of action (t  =  -2.25, P < .05). CONCLUSIONS: Our analogue research design provided new insights into ATs' knowledge and use of sport psychology in practice. The results highlighted the importance of coursework focusing on applied areas of sport psychology in the training of ATs.

Mall Walking Program Environments, Features, and Participants: A Scoping Review.

INTRODUCTION: Walking is a preferred and recommended physical activity for middle-aged and older adults, but many barriers exist, including concerns about safety (ie, personal security), falling, and inclement weather. Mall walking programs may overcome these barriers. The purpose of this study was to summarize the evidence on the health-related value of mall walking and mall walking programs. METHODS: We conducted a scoping review of the literature to determine the features, environments, and benefits of mall walking programs using the RE-AIM framework (reach, effectiveness, adoption, implementation, and maintenance). The inclusion criteria were articles that involved adults aged 45 years or older who walked in indoor or outdoor shopping malls. Exclusion criteria were articles that used malls as laboratory settings or focused on the mechanics of walking. We included published research studies, dissertations, theses, conference abstracts, syntheses, nonresearch articles, theoretical papers, editorials, reports, policy briefs, standards and guidelines, and nonresearch conference abstracts and proposals. Websites and articles written in a language other than English were excluded. RESULTS: We located 254 articles on mall walking; 32 articles met our inclusion criteria. We found that malls provided safe, accessible, and affordable exercise environments for middle-aged and older adults. Programmatic features such as program leaders, blood pressure checks, and warm-up exercises facilitated participation. Individual benefits of mall walking programs included improvements in physical, social, and emotional well-being. Limited transportation to the mall was a barrier to participation. CONCLUSION: We found the potential for mall walking programs to be implemented in various communities as a health promotion measure. However, the research on mall walking programs is limited and has weak study designs. More rigorous research is needed to define best practices for mall walking programs' reach, effectiveness, adoption, implementation, and maintenance.