Strength Training Intervention Research Articles

Effects of multicomponent exercise intervention on cardiometabolic risk factors in children and young adults with cerebral palsy: a multiple-baseline trial.

Adults with cerebral palsy (CP) have a high risk of cardiometabolic diseases. It is unknown whether this risk is elevated in young people with CP and whether exercise can reduce this risk. Therefore, we investigated the effects of the EXErcise for Cerebral Palsy (EXECP) intervention on cardiometabolic risk in children and young adults with CP and compared this risk to typically developing children and young adults (TDs). Ambulatory male and female participants with spastic CP, aged 9-24 years, and age- and sex-matched TDs without musculoskeletal disorders were recruited. Participants with CP were measured at baseline, after a three-month control period manifesting normal development, and after the three-month strength, gait, and flexibility training intervention. TDs were measured at baseline and after the control period. They did not attend the intervention. Cardiometabolic risk factors included body weight, body fat percentage, and skeletal muscle mass index assessed with bioimpedance; resting systolic and diastolic blood pressure and aortic pulse wave velocity assessed with a non-invasive oscillometric device; fasting plasma high-density and low-density lipoprotein cholesterol, triglyceride, and glucose levels. Data were analyzed with independent samples t-tests and linear mixed-effects models adjusted for sex and age. The study involved 18 participants with CP (13 males, 9-22year, mean 14.2 ± 4.4) and 17 TDs (12 males, 9-22year, mean 14.6 ± 4.3). At baseline, participants with CP had a 1.0 (95% confidence interval (CI) [-2.0, -0.0]) kg/m2 lower skeletal muscle mass index than TDs. During the control period, no statistically significant between-group differences were observed in the change of any outcome. In the CP group, body weight (β = 1.87, 95% CI [1.04, 2.70]), fat percentage (β = 1.22 [0.07, 2.37], and blood glucose (β = 0.19, 95% CI [0.01, 0.37]) increased, while diastolic blood pressure (β=-2.31, 95% CI [-4.55, -0.06]) and pulse wave velocity (β=-0.44, 95% CI [-0.73, -0.16]) decreased. In the TD group, only body weight increased (β = 0.85, 95% CI [0.01, 1.68]) statistically significantly. In the CP group, no changes were observed during the intervention. Young people with and without CP do not exhibit significant differences in most cardiometabolic risk factors. EXECP intervention may attenuate some adverse development trajectories occurring without the intervention but greater volume and intensity of aerobic exercise may be needed to reduce cardiometabolic risk. ISRCTN69044459; Registration date 21/04/2017.

Increased knee-extension strength and steps per day after a novel post-hospitalization rehabilitative program in older adults (65+): Secondary analyses of a randomized controlled single-blinded trial using an expanded sample size

IntroductionOlder adults are at risk of developing new or worsened disability when hospitalized for acute medical illness. This study is a secondary analysis of the STAND-Cph trial on the effect of a simple strength training intervention initiated during hospitalization and continued after discharge. We investigated the between-group difference in change in functional performance outcomes, the characteristics of patients who experienced a relevant effect of the intervention, and the characteristics of those who were compliant with the intervention, using an expanded sample size as protocolized. MethodsThe STAND-Cph was a randomized controlled trial conducted at a major Danish university hospital. Acutely admitted older adult patients (65+) from the Emergency Department were randomized to the intervention group receiving progressive strength training and a protein supplement during and after hospitalization (12 sessions over 4 weeks) or control group receiving usual care. The primary outcome was the de Morton Mobility Index assessed at baseline and 4 weeks after discharge. The secondary outcomes were 24-h mobility (assessed by ActivPAL accelerometers), isometric knee-extension strength, 30 s. sit-to-stand performance, and habitual gait speed. ResultsBetween September 2013 and September 2018, a total of 158 patients were included and randomized to either the intervention group (N = 80; mean age 79.9 ± 7.6 years) or the control group (N = 78; mean age 80.8 ± 7.4 years). We found no significant between-group difference in change in our primary outcome (p > 0.05). Both the intention-to-treat (difference in change 0.14 Nm/kg (95 % CI 0.03;0.24), p = 0.01) and the per protocol (difference in change 0.16 Nm/kg (95 % CI 0.04;0.29), p = 0.008) analyses showed that between baseline and 4 weeks, knee-extension strength increased significantly more in the intervention group than in the control group. Also, the per protocol analysis showed that the intervention group increased their daily number of steps significantly more than the control group (difference in change 1088 steps (95 % CI 44; 2132); p = 0.04). When examining subgroups of patients, we found no significant differences neither between those who experienced a clinically relevant improvement in the de Morton Mobility Index and those who did not, nor between those who were compliant and those who were not. ConclusionThis exploratory analysis indicates that while simple progressive strength training and protein supplementation does not improve functional performance assessed by the de Morton Mobility Index, it can benefit specific facets of physical activity and muscle strength among geriatric patients.

118 Can we reasonably recommend strength training twice weekly for the general adult population aged 18-64 years to secure optimal body functionality?

Abstract Purpose The objective of the study was to conduct a quality assessment of the scientific literature underlying the Danish Health Authorities (DHA) revised recommendations on physical activity (PA), with focus on the new advice on strength training twice a week to secure optimal body functionality in the adult population aged 18-64 years. Methods The study was a scoping review. Reviews conducted by the World Health Organization (WHO), the American and Canadian Health Authorities, and evidence referenced in earlier reports from DHA were included for initial review, as DHA refer to these as base for their PA-guideline revision. Studies included in the reviews were title- and abstract screened to assess whether they investigated PA and/or strength training in a population of adults aged 18-64 years. Studies identified through this screening, were furthermore full text screened, and finally included in a quality assessment, if they investigated a strength training intervention in relation to a measure of body functionality. The quality assessment was inspired by STROBE and the Jadad Scale (for observational studies and RCTs respectively) and extended with an assessment of the study’s research goal compliance (causal or predictive) to evaluate the study’s ability to detect eventual effects of the intervention on body functionality. Results A total of 25 out of 879 studies identified in the reviews were selected for quality assessment. Great variations in quality were identified, and many studies (13 out of 25) did not achieve 2/3 of potential quality points. The studies generally support strength training as an effective intervention on body functionality. However, 15 of the 16 RCTs investigated a study population with functional limitations, e.g. populations with musculoskeletal disorders, and most studies were based on a study population in the higher end of the age spectrum 18-64 years. Conclusions The literature does not clearly support a recommendation on strength training twice weekly for the general adult population to secure optimal body functionality. The formulation of PA-guidelines should be based on evidence that 1) aims to draw causal conclusions on the effect of the recommended intervention and 2) investigates a population comparable to the target audience. Funding None

Evaluating the impact of a combined aerobic and strength training intervention on the physical performance of male Chinese People's Liberation Army air force pilots

This study aimed to assess the impact of a 16-week combined training program on the physical performance of 20 male Air Force pilots, with an average age of 31.87 ± 2.75 years, body mass of 76.33 ± 0.79 kg, and height of 175.55 ± 3.65 cm. This intervention encompassed both aerobic and strength training, involving six weekly training sessions. The participants were categorized into two groups based on their initial physical performance levels to explore potential baseline influences on post-intervention adaptations. The study measured changes in estimated maximal oxygen uptake (VO2 max), maximal strength, muscular endurance, and long jump performance before and after the training program. Repeated measures ANOVA revealed significant differences over time in the V˙O2 max (F = 86.898; p < 0.001; ηp2 = 0.821), handgrip strength right hand (F = 160.480; p < 0.001; ηp2 = 0.894), handgrip strength left hand (F = 102.196; p < 0.001; ηp2 = 0.843), squat maximal strength (F = 525.725; p < 0.001; ηp2 = 0.965), push-ups (F = 337.197; p < 0.001; ηp2 = 0.974), sit up (F = 252.500; p < 0.001; ηp2 = 0.930) and standing long jump (F = 521.714; p < 0.001; ηp2 = 0.965). In conclusion, the 16-week combined training regimen significantly enhanced the physical performance of Air Force pilots, regardless of their initial performance levels.

Effects of trunk muscle strength training on lung function in healthy runners.

Abdominal pressure is important for athlete performance and conditioning, and lung function is implicated in running performance and economy. We aimed to determine the synergistic effects of trunk muscle strength training on abdominal pressure and lung function in university student runners. A total of 18 healthy male runners participated in the study. Abdominal pressure was measured against air pressure applied by a cuff belt wrapped around the trunk. Forced expiratory volume in 1 second (FEV1) and FEV in 6 seconds (FEV6) were measured. Trunk muscle strength training was performed for 8 weeks, and abdominal pressure and lung function were compared preintervention as well as at 8 weeks and 6 months postintervention. Correlations between the preintervention abdominal pressure and FEV1 and FEV6, as well as the rate of change (Δ) of each item at each time point, were examined. Preintervention correlations between abdominal pressure and lung function were significant for abdominal pressure and FEV1 (r=0.475, P=0.047) and abdominal pressure and FEV6 (r=0.473, P=0.047). Significant correlations were found between Δabdominal pressure and ΔFEV1 (r=0.489, P=0.040) and Δabdominal pressure and ΔFEV6 (r=0.478, P=0.045) between preintervention and 8 weeks postintervention. Significant correlations were found between Δabdominal pressure and ΔFEV6 (r=0.557, P=0.016) between 8 weeks and 6 months postintervention. The trunk muscle strength training intervention improved abdominal pressure and lung function, and the rate of change was also positively correlated, suggesting a synergistic effect between the two.

Comparing preferences to evaluations of barrier self-efficacy for two strength training programs in US older adults.

Engagement in regular physical activity is one of the best strategies for older adults to remain healthy. Unfortunately, only 35% of older adults meet guidelines for muscle strengthening activities. Eliciting participant preferences is one possible way to improve physical activity engagement. However, other sources of participant input to improve uptake and maintenance remain uninvestigated. This study compared preferences to self-efficacy ratings for two strength training programs. We conducted a national cross-sectional survey of 611 US adults over age 65. We compared two participant evaluations (the preferred program and the program for which they had higher barrier self-efficacy) of two hypothetical strength training programs (45 minutes performed three times per week (traditional) and 5 minutes performed daily (brief)). Most participants (68%) preferred the brief strength training program. The difference in self-efficacy ratings was an average of 1.2 (SD = 0.92). One in five participants preferred a strength training program for which they had less self-efficacy; nearly all of these participants (92%) preferred the traditional strength training program but had more self-efficacy for the brief strength training program. Older adults reported preferring and having more self-efficacy for a brief compared to a traditional strength training program. Differences in self-efficacy ratings between the two strength training programs were large. Preferences were often not congruent with ratings of self-efficacy. Preferences for strength training programming may not always reflect the program most likely to be maintained. Future investigations should evaluate differences in behavioral uptake, maintenance, and outcomes from two comparative strength training interventions using preferences and self-efficacy.

Effects on the Physical Functioning of Two Exercise Interventions in Patients with Multiple Myeloma: A Pilot Feasibility Study.

Because of the high prevalence of bone destruction in patients with multiple myeloma (MM), physical exercise is oftentimes discouraged by healthcare providers. The goal of this prospective trial was to investigate the feasibility of two six-month exercise interventions in patients with MM (N = 42): a remotely prompted home-based walking intervention or a supervised strength training intervention. Physical function and pain were assessed with the Activity Measure for Post-Acute Care (AM-PAC) Basic Mobility Short Form raw score, a six-minute walk test (6 MWT), a 30-second sit-to-stand test (30 SST), a timed up-and-go (TUG) test, a visual analog scale (VAS) for pain, handheld dynamometer tests, heart rate at rest, blood oxygen saturation at rest, and body mass index. No intervention-related serious adverse events were observed. Adverse events mostly affected the musculoskeletal system. In the resistance training group (n = 24), patients showed significant improvements in AM-PAC, TUG, 6 MWT, and 30 SST, with all effects but the 6 MWT sustained six months after the intervention. The walking group (n = 18) saw improvements in the AM-PAC, TUG, 6 MWT, and 30 SST, with a sustained change in the AM-PAC and TUG. This trial shows the feasibility of both exercise interventions with a sustained beneficial effect on the physical functioning of a six-month strength training intervention and, to a lesser extent, a six-month unsupervised walking intervention. A larger study building on these findings is currently underway.

Specificity of early motor unit adaptations with resistive exercise training.

After exposure of the human body to resistive exercise, the force-generation capacity of the trained muscles increases significantly. Despite decades of research, the neural and muscular stimuli that initiate these changes in muscle force are not yet fully understood. The study of these adaptations is further complicated by the fact that the changes may be partly specific to the training task. For example, short-term strength training does not always influence the neural drive to muscles during the early phase (<100ms) of force development in rapid isometric contractions. Here we discuss some of the studies that have investigated neuromuscular adaptations underlying changes in maximal force and rate of force development produced by different strength training interventions, with a focus on changes observed at the level of spinal motor neurons. We discuss the different motor unit adjustments needed to increase force or speed, and the specificity of some of the adaptations elicited by differences in the training tasks.

Strength Training Frequency and Athletic Performance in High School Girls Basketball Players.

This study investigated the effects of a six-week strength training intervention on the physical fitness of female high school athletes, with a focus on training frequency. Twenty-three female high school basketball athletes were recruited and split into two groups: one group participated in strength training once per week (S1), while the other participated in two training sessions per week (S2). The groups were not random as training sessions were voluntary, and some participants were only able to train once per week. Participants were tested before and after the intervention, and the data included: age, body height, body mass, body fat percentage, grip strength, leg/back dynamometer (LBD) strength, a seated medicine ball throw (MBT), a vertical jump (VJ), 505 tests from each foot, 0-5, 0-10, and 0-20 sprint times, and multistage fitness test shuttles. Data were analyzed by a two (time) x two (group) repeated measures analysis of variance (ANOVA; p < 0.05). When significant F ratios were detected in any ANOVA calculations, post hoc pairwise comparisons were conducted using the Bonferroni adjustment procedure. There were significant main effects for time that indicated the following: increased body height, body mass, grip strength, LBD strength, MBT distance, and VJ height, faster 505 times, and slower 0-5 and 0-10 m sprint times (p ≤ 0.021). There were no significant time by group ANOVAs or between-group main effects. These performance changes occurred irrespective of training frequency. High school girls who participate in at least one strength training session per week can improve their strength (grip, LBD), power (MBT, VJ), and change-of-direction speed (505).

Assessing the individual relationships between physical test improvements and external load match parameters in male professional football players-a brief report.

This study aimed to explore whether a meaningful improvement in physical performance following an in-season strength training intervention can be related to external load match parameters at an individual level in professional male football players. Eight male professional football players (25.4 ± 3.1 years, 184.1 ± 3.4 cm, 79.3 ± 2.2 kg) completed a 10-week strength intervention period in addition to football-specific training and matches. Commonly used physical and external load measures were assessed before and after intervention. Physical performance improvements had to exceed the measurement's typical error and the smallest worthwhile difference (SWD) to be considered meaningful. External load match parameters were assessed before and after the intervention period using SWD and non-overlap of all pairs (NAP) analysis. A Bayesian pairwise correlation analysis was performed to evaluate relationships between changes in physical performance and external load match parameters. Three players displayed meaningful improvements in two to five physical performance measures. However, positive changes exceeding the SWD and positive effects in NAP results were observed for all players in external load match parameters. Kendall's tau correlation analysis showed evidence (base factor >3) for only one correlation (maximum speed - decelerations, τ = -0.62) between the changes in physical performance and external load measures, while the remaining comparisons exhibited no relation. The findings suggest that improvements in physical performance may not necessarily translate to improvements in external load match parameters. Further research, with larger sample sizes, is needed to understand potential mechanisms between acute and chronic physical performance changes and football external load parameters during training and matches.

RESP-FIT: A Technology-Enhanced Combined Inspiratory and Expiratory Muscle Strength Training Intervention for Adults With COPD.

Chronic obstructive pulmonary disease (COPD) is a progressive respiratory disease associated with respiratory muscle weakness and activity-limiting symptoms such as dyspnea. Respiratory muscle strength training (RMST) is an empirically validated therapy to increase respiratory muscle strength. The theoretically-informed, technology-enhanced RESP-FIT intervention for COPD is a 6-week combined inspiratory and expiratory muscle strength training program with symptom measurement in real time via ecological momentary assessment (EMA). In addition to hypothesis generating purposes, the purpose of this randomized control pilot study was to explore whether observed effects (on symptoms, patient-reported outcomes, and respiratory muscle strength) support carrying out a future large-scale trial of RESP-FIT. Thirty adults with COPD were randomized to intervention (n=15) or control, with intervention group undergoing 6 weeks of mHealth-enhanced RMST. Daily symptom data were collected in real time over the 6-week intervention period using EMA. Compared to the control group, participants in the intervention group reported decreased dyspnea and anxiety, increased happiness, and improved respiratory muscle strength (PIMax). However, reports of fatigue and sleep disturbance increased in the intervention group compared to the control group. Results support the hypothesis that the 6-week RESP-FIT program will improve respiratory muscle strength, emotional state (anxiety and happiness), and breathlessness in COPD but may contribute to fatigue, at least in the short-term. Future work is needed to determine efficacy of RESP-FIT, determine mechanisms of action on dyspnea and fatigue, and conduct within-subject comparisons of EMA data to explore individual or environmental fluctuations in COPD symptoms.

Mechanisms of Behavior Change for a Digital Resistance Training Intervention: A Mediation Study

ABSTRACT Introduction/Purpose Few interventions that seek to enhance resistance training behavior examine the mechanisms through which they exert their effects. Rather, many trials focus on physiological outcomes under tightly controlled training regimens. Understanding how to promote resistance training in everyday life is vital. This study aimed to examine the mediators of a remote-based 9-wk randomized controlled trial with a 4-wk self-regulation intervention period. Methods Sixty-one participants 18–35 yr of age who were not currently achieving the American College of Sports Medicine resistance training guidelines received two Zoom-based personal training sessions, resistance training equipment, and access to a Web site with training videos. After the two personal training sessions, participants were randomized to an intervention or comparison condition. Participants in the intervention condition received four weekly Zoom-based coaching calls to discuss barriers and solutions to resistance training participation. Resistance training behavior participation, self-efficacy, intention, behavioral expectations, and coping planning were assessed after the intervention period and at a follow-up 4 wk later. A mediation analysis was conducted to examine if the intervention had indirect effects on behavior through changes in any of the measured psychological variables. Results All necessary measures were completed by 96.7% of participants. After the intervention, direct effects were observed on self-efficacy (b = 0.68, standard error (SE) = 0.26, P = 0.01), intention (b = 0.77, SE = 0.27, P = 0.004), coping planning (b = 0.43, SE = 0.13, P = 0.001), and behavioral expectations (b = 19.7, SE = 5.3, P = 0.0001). Self-efficacy (b = 2.07, SE = 0.83, P = 0.01) and intention (b = 3.0, SE = 0.61, P = 0.0001) had direct effects on behavior. In the multiple mediation model, intention emerged as a significant mediator (b = 2.64, SE = 0.83, P = 0.001). Conclusion These findings suggest that changes in intention contributed to changes in behavior. Techniques that target behavioral intention may be appropriate for in-home strength-training interventions in young adults.

EFFECT OF STRENGTH TRAINING ON STATIC BALANCE IN BASEBALL ATHLETES

The purpose of this study was to investigate the effect of strength on the static balance of Pakistani baseball athletes. This study shows how elite Pakistani baseball players' static balance may improve following a 12-week strength training pre/post-intervention. The participants were separated into two groups of ten: the experimental group and the control group. The experimental group completed 12 weeks of strength training, whereas the control group received no treatment. The Romberg test was used to measure the participants' static balance in four different positions: standing on both feet with eyes open, standing on both feet with eyes closed, standing on the dominant leg with eyes closed, and standing on the nondominant leg with eyes closed. The experimental group's static balance improved significantly following the 12-week strength training intervention. The study's findings demonstrated that 12 weeks of strength training significantly improved Pakistani baseball players' static balance. Furthermore, the strength training program had a substantial and good impact on the static balance of Pakistani baseball players. It is suggested that the Pakistan Baseball Federation implement strength training and focus on improving static balance in order to improve various aspects of Pakistani baseball players' performance.

ACCEPTABILITY OF HIGH-INTENSITY FUNCTIONAL STRENGTH TRAINING AT HOME FOR POSTINJURY OLDER ADULTS

Abstract Regular exercise plays a vital role in optimizing aging and preventing functional decline. Despite the recognized benefit of exercise, adherence is challenging, and acceptability of exercise interventions is crucial. Acceptability is influenced by various factors, including content, context, and delivery. The purpose of this qualitative descriptive study is to determine the acceptability to older adult participants of a home-based high-intensity functional strength training (HIFST) intervention delivered by a physiotherapist via videoconferencing. HIFST involves the use of periods of ‘hard’ effort using everyday strength-building movements alternating with ‘easy’ recovery periods. This study accompanies an ongoing pilot randomized controlled trial investigating the feasibility of HIFST (completion: spring 2023). We are conducting semi-structured interviews and a short anonymous survey with participants who have completed HIFST. Data collected is being analyzed using qualitative content analysis. To date, results from 8 participants (2 men, 6 women, 55-81 years) demonstrate a positive overall impression of HIFST with all participants noting enjoyment, a good experience, and/or meeting their expectations. Participants reported certain aspects less/more enjoyable than others (e.g., specific exercises). No technical difficulties have been noted and many participants appreciated the convenience of an online format. Prior knowledge of interval-based exercise was minimal for most participants and the majority commented on a preference for shorter intervals with shorter rest periods. Further data collection and analysis will provide a contextualized understanding of the HIFST intervention and important considerations for exercise prescription in an aging population.

Risk factors and injury prevention strategies for overuse injuries in adult climbers: a systematic review.

Climbing is an increasingly popular activity and imposes specific physiological demands on the human body, which results in unique injury presentations. Of particular concern are overuse injuries (non-traumatic injuries). These injuries tend to present in the upper body and might be preventable with adequate knowledge of risk factors which could inform about injury prevention strategies. Research in this area has recently emerged but has yet to be synthesized comprehensively. Therefore, the aim of this study was to conduct a systematic review of the potential risk factors and injury prevention strategies for overuse injuries in adult climbers. This systematic review was conducted in accordance with the PRISMA guidelines. Databases were searched systematically, and articles were deemed eligible based upon specific criteria. Research included was original and peer-reviewed, involving climbers, and published in English, German or Czech. Outcomes included overuse injury, and at least one or more variable indicating potential risk factors or injury prevention strategies. The methodological quality of the included studies was assessed with the Downs and Black Quality Index. Data were extracted from included studies and reported descriptively for population, climbing sport type, study design, injury definition and incidence/prevalence, risk factors, and injury prevention strategies. Out of 1,183 records, a total of 34 studies were included in the final analysis. Higher climbing intensity, bouldering, reduced grip/finger strength, use of a "crimp" grip, and previous injury were associated with an increased risk of overuse injury. Additionally, a strength training intervention prevented shoulder and elbow injuries. BMI/body weight, warm up/cool downs, stretching, taping and hydration were not associated with risk of overuse injury. The evidence for the risk factors of training volume, age/years of climbing experience, and sex was conflicting. This review presents several risk factors which appear to increase the risk of overuse injury in climbers. Strength and conditioning, load management, and climbing technique could be targeted in injury prevention programs, to enhance the health and wellbeing of climbing athletes. Further research is required to investigate the conflicting findings reported across included studies, and to investigate the effectiveness of injury prevention programs. https://www.crd.york.ac.uk/, PROSPERO (CRD42023404031).

Effect of Aging on Movement Quality in Australian Urban Firefighters.

Redshaw, AS, Carrick-Ranson, G, Bennett, H, Norton, KI, and Walker, A. Effect of aging on movement quality in Australian urban firefighters. J Strength Cond Res 37(11): e601-e608, 2023-Adequate levels of movement quality (MQ) are required to safely perform occupational tasks in physically demanding and hazardous professions such as firefighting. Although it is well established that MQ deteriorates with age in population studies, there is conflicting evidence in older tactical populations. This study sought to examine the relationship between age and MQ in Australian urban firefighters. The impact of physical activity, injury history, and body mass index on MQ were also explored. The MQ of 324 professional Australian urban firefighters was assessed using MovementSCREEN MQ assessment tool. Scores of whole-body MQ ranged from 35.3 to 82.6 (0-100 scale), with a mean score of 59.2 ± 10.0. There was a moderate, negative association between MQ and age (r = -0.500; p ≤ 0.001), with those older than 50 years of age having significantly lower scores of MQ than their younger counterparts (p ≤ 0.001). Secondary analysis found that higher body mass index (r = -0.285; p ≤ 0.001), lower habitual physical activity levels (r = 0.165; p ≤ 0.003), and the presence of any musculoskeletal injury in the previous 12 months (p = 0.016) had significant negative effects on composite MQ. Firefighters older than 50, obese, and engaging in low levels of physical activity should be considered a high priority for functional strength training interventions to maintain adequate MQ throughout their careers.

Efektivitas Latihan Fisik dalam Meningkatkan Kualitas Hidup Pasien Sirosis Hati

This systematic review aims to examine the effectiveness of physical exercise in improving the quality of life of liver cirrhosis patients. The author's method was to carry out a search process for relevant journals regarding the influence of physical exercise in improving the quality of life of liver cirrhosis patients. The author searched for literature using four data bases, namely; pubmed, embase, clinical key, science direct with year restrictions from 2020 - 2023. During the search process the author typed several keywords, such as: Physical therapy OR Physical exercise OR Physical activity) AND (quality of life OR Life Quality OR Health-Related Quality Of Life) AND (Liver cirrhosis OR Hepatic Cirrhosis. The results of the research, from the initial search results, resulted in 6 articles being analyzed. Of the 6 physical activity articles, The Strength Training Intervention (STRIVE), Home-Based Physical Activity, Resistance Training, were effective in improving quality life in liver cirrhosis patients. In conclusion, physical activity interventions applied to liver cirrhosis patients can improve the quality of life of liver cirrhosis patients.&#x0D; &#x0D; Keywords: Hepatic Cirrhosis, Liver cirrhosis, Physical exercise, Physical therapy, Quality of life.

Acute Effects in Selective Training of the Peroneus Longus and Peroneus Brevis

Category: Other Introduction/Purpose: The peroneal muscles undergo morphological changes and functional decline after a lateral ankle sprain, contributing to recurrence. We reported that different morphological changes occur in the peroneus longus (PL) and peroneus brevis (PB) after the lateral ankle sprain (Arima et al., 2022), and we believe that separate strength training for the PL and PB is necessary. However, the effect of selective training has not been studied. This study examined the acute effects of two different strength training interventions on PL and PB muscle morphology, one emphasizing loading on the ball of foot in PL training and the other emphasizing ankle eversion in PB training. The aim was then to determine the validity of selective strength training interventions for the peroneal muscles. Methods: Twenty healthy adults participated. Two training interventions were performed using a Thera-Band (strength: level +3 (black), Sakai Medical) in the right leg on separate days: the PL intervention in which the Thera-Band was placed on the ball of foot and pushed out from the contact point, and the PB intervention in which the Thera-Band was pushed out from the base of the fifth metatarsal. Muscle cross-sectional area (CSA) and thickness of the peroneus muscles at the proximal 25% (showing PL) and 75% (showing PB) from the line connecting the fibular head and lateral malleolus were measured with an ultrasound device. Measurements were taken before (Pre), immediately after (Post), and 10, 20, and 30 minutes after the intervention (time effect). A repeated measures two-way ANOVA was conducted to identify differences in the training effects of PL and PB interventions on PL and PB CSA, thickness. The significance level was 5%. Results: Significant main effects of time and intervention and a significant interaction between time and intervention were found in the proximal 25% and distal 75% CSA and thickness (p &lt; 0.05). For the proximal 25% CSA, only PL intervention significantly increased the CSA compared to Pre at Post, 10 and 20 minutes (p &lt; 0.05). With regard to the proximal 75% CSA, only PB intervention significantly increased the CSA compared to Pre at Post, 10 and 20 minutes (p &lt; 0.05). For the proximal 25% thickness, only PL intervention showed a significant increase in Post compared to Pre (p &lt; 0.05). Regarding proximal 75% thickness, only PB intervention significantly increased the thickness compared to Pre at Post, 10, and 20 minutes (p &lt; 0.05). Conclusion: Previous studies have reported that PL muscle activity is increased by the ball of foot loading (Ishida et al., 2011), and the PB contributes to ankle eversion compared to the PL (Otis et al., 2007). Transient muscle hypertrophy immediately after training is due to edema caused by muscle damage, indicating an acute effect of training (Damas et al., 2016). The CSA and thickness of the proximal 25% showing PL in the PL intervention and the distal 75% showing PB in the PB intervention increased immediately after those interventions in this study, suggesting the possibility of selectively training PL and PB.

Piloting Res-ET: A Remote Inspiratory Muscle Strength Training Intervention On Young Stroke Survivors

Piloting Res-ET: A Remote Inspiratory Muscle Strength Training Intervention On Young Stroke Survivors

Effects of Acute Loading Induced Fatigability, Acute Serum Hormone Responses and Training Volume to Individual Hypertrophy and Maximal Strength during 10 Weeks of Strength Training

This study investigated whether a strength training session-induced acute fatigue is related to individuals’ strength training adaptations in maximal force and/or muscle hypertrophy, and whether acute responses in serum testosterone (T) and growth hormone (GH) concentrations during the training sessions would be associated with individual neuromuscular adaptations. 26 males completed the 10-week strength-training intervention, which included fatiguing dynamic leg press acute loading bouts (5 x 10 RM) at weeks two, four, six, and ten. Blood samples were collected before and after the loading and after 24h of recovery for serum T, GH, and cortisol (C) concentrations at weeks 2, 6, and 10. The cross-sectional area of the vastus lateralis was measured by ultrasonography. Isometric force measurements were performed before and immediately after loadings, and loading-induced acute decrease in maximal force was reported as the fatigue percentage. The subjects were split into three groups according to the degree of training-induced muscle hypertrophy after the training period. Increases in isometric force were significant for High Responders (HR, n = 10) (by 24.3 % ± 17.2, p = 0.035) and Medium Responders (MR, n = 7) (by 23.8 % ± 5.5, p = 0.002), whereas the increase of 26.2 % (±16.5) in Low Responders (LR, n = 7) was not significant. The amount of work (cm + s) increased significantly at every measurement point in all the groups. A significant correlation was observed between the fatigue percentage and relative changes in isometric force after the training period for the whole group (R = 0.475, p = 0.022) and separately only in HR (R = 0.643, p = 0.049). Only the HR group showed increased acute serum GH concentrations at every measurement point. There was also a significant acute increase in serum T for HR at weeks 6 and 10. HR showed the strongest correlation between acute loading-induced fatigue and isometric force gains. HR was also more sensitive to acute increases in serum concentrations of T and GH after the loading. Acute fatigue and serum GH concentrations may be indicators of responsiveness to muscle strength gain and, to some extent, muscle hypertrophy.