Intensity Resistance Training Research Articles

Effects of Different Weekly Set Volumes on Strength and Perceptual Responses in Athletes.

This study investigated the effects of different resistance training (RT) volumes quantified by weekly sets at high intensity (load and effort) on dynamic strength adaptations and psychophysiological responses in trained individuals. Twenty-four athletes were randomly allocated to three groups that performed three (3 S, n=8), six (6 S, n=8), and nine (9 S, n=8) weekly sets, respectively, three times a week on the barbell back squat and bench press during an 8-week period. While all groups showcased strength gains (p<0.05), post hoc comparisons revealed that 6 S and 9 S elicited greater strength adaptations than 3 S in barbell back squat (p=0.027 and p=0.004, respectively) and bench press (p=0.001 and p=0.044, respectively). There were no differences between 6 S and 9 S conditions for back squat (p=0.999) and bench press (p=0.378). Although a time effect was observed for Session-RPE (p=0.014) and Total Quality Recovery scale (p=0.020), psychophysiological responses were similar among groups. Our findings suggest that performing six and nine weekly sets at high intensities led to greater strength gains compared to three weekly sets in strength-trained individuals, despite similar psychophysiological responses.

Non-Pharmacological Strategies for Managing Sarcopenia in Chronic Diseases.

This article focuses on a range of non-pharmacological strategies for managing sarcopenia in chronic diseases, including exercise, dietary supplements, traditional Chinese exercise, intestinal microecology, and rehabilitation therapies for individuals with limited limb movement. By analyzing multiple studies, the article aims to summarize the available evidence to manage sarcopenia in individuals with chronic diseases. The results strongly emphasize the role of resistance training in addressing chronic diseases and secondary sarcopenia. Maintaining the appropriate frequency and intensity of resistance training can help prevent muscle atrophy and effectively reduce inflammation. Although aerobic exercise has limited ability to improve skeletal muscle mass, it does have some positive effects on physical function. Building upon this, the article explores the potential benefits of combined training approaches, highlighting their helpfulness for overall quality of life. Additionally, the article also highlights the importance of dietary supplements in combating muscle atrophy in chronic diseases. It focuses on the importance of protein intake, supplements rich in essential amino acids and omega-3, as well as sufficient vitamin D to prevent muscle atrophy. Combining exercise with dietary supplements appears to be an effective strategy for preventing sarcopenia, although the optimal dosage and type of supplement remain unclear. Furthermore, the article explores the potential benefits of intestinal microecology in sarcopenia. Probiotics, prebiotics, and bacterial products are suggested as new treatment options for sarcopenia. Additionally, emerging therapies such as whole body vibration training, blood flow restriction, and electrical stimulation show promise in treating sarcopenia with limited limb movement. Overall, this article provides valuable insights into non-pharmacological strategies for managing sarcopenia in individuals with chronic diseases. It emphasizes the importance of a holistic and integrated approach that incorporates exercise, nutrition, and multidisciplinary interventions, which have the potential to promote health in the elderly population. Future research should prioritize high-quality randomized controlled trials and utilize wearable devices, smartphone applications, and other advanced surveillance methods to investigate the most effective intervention strategies for sarcopenia associated with different chronic diseases.

EXPLORING THE EFFECTS OF VIGOROUS INTERVAL TRAINING, MODERATE RESISTANCE TRAINING AND PILATES ON ARTERIAL STIFFNESS AND BLOOD PRESSURE DURING PREGNANCY: A RANDOMISED CROSS-OVER TRIAL

INTRODUCTION Regular moderate intensity exercise throughout pregnancy provides significant benefits to both maternal and foetal cardiovascular health outcomes. Current exercise guidelines recommend a combination of moderate intensity aerobic and resistance training (RT). However, there is limited research exploring the cardiovascular effects of higher intensities (vigorous/high) in comparison to common pregnancy exercise modalities such as RT and Pilates (PIL). AIM: To investigate the acute effects of three modes of exercise (resistance, vigorous aerobic intervals and Pilates) during trimester two (T2) and three (T3) of pregnancy on measures of arterial stiffness (pulse wave velocity [PWV]) and blood pressure (BP). METHODS Eleven women with uncomplicated pregnancies (age 32 ± 3 years, pre-pregnancy BMI 23.9 ± 3.5 kg/m2) completed testing in T2 (average 20 ± 1.6 weeks gestation) and T3 (average 29 ± 2.5 weeks gestation). Participants performed one each of vigorous intensity interval training (VIIT) (∼33 min), resistance training (RT) (∼35 min) and Pilates (PIL) (∼35 min) in T2 and T3 in randomised order approximately 1 week apart each trimester. Resting outcome measures of PWV, BP and foetal heart rate (FHR) were obtained following 5 minutes of rest and again immediately and 10 minutes post exercise session. BP, maternal heart rate (MHR), and rating of perceived exertion (RPE) were monitored throughout. RESULTS There was no difference in the acute PWV response to each type of exercise across the trimesters (1 min VIIT: T2 = 5.53 ± 0.85m/s, T3 = 5.26 ± 0.67m/s, 95%CI[-1.36-0.67]; RT: T2 = 5.4 ± 0.80m/s, T3 = 5.48 ± 0.56m/s, 95%CI[-0.88-1.10]; PIL: T2 = 5.44 ± 0.68m/s, T3 = 5.44 ± 0.68m/s, 95%CI[-0.93-1.01]). There was no significant difference in the acute response in SBP to VIIT (T2 = 116 ± 12.1mmHg, T3 = 122 ± 7.2mmHg, 95%CI[-0.42 - 1.65]. SBP was significantly higher in T3 than T2 1 minute following PIL (T2 = 110 ± 5.8mmHg, T3 = 121 ± 11.7mmHg, 95%CI[0.04-2.1]) and 10 minutes following RT (T2 = 105 ± 10.1mmHg, T3 = 116 ± 5.0mmHg, 95%CI[0.27 - 2.46]. CONCLUSION VIIT, RT and PIL appear to elicit similar post-exercise haemodynamic and arterial stiffness responses in both the mother and foetus. As such, VIIT may be a suitable addition to standard moderate intensity and RT prescription during an uncomplicated pregnancy.

RESISTANCE TRAINING PRESCRIPTION FOR ATHLETES DURING PERIODS OF PLANNED DE-LOADING: A SURVEY OF STRENGTH AND CONDITIONING COACHES

INTRODUCTION &amp; AIMS Implementing resistance training (RT) for athletes may be difficult during some training-phases due to competing demands. However, it is currently unknown how strength and conditioning coaches prescribe RT during periods of planned de-loading. Therefore, we aimed to investigate the RT prescription practices of coaches during four common de-loading periods (taper, competitive season, tournament, travel). METHODS An anonymous online survey was shared globally to coaches, with data analysed from 204 responders (current level of athlete coached: world class n=68, elite/international n=62, highly-trained n=64, trained n=10). Coaches only provided answers about prescription for de-loading periods which they reported encountering. Where a coach indicated not prescribing RT for specific de-loading periods, they provided information on any barriers preventing RT prescription. RESULTS Weekly RT prescription across all de-load periods was typically reported as: 1-2 sessions, 30-60 min, 1-3 sets, 1-6 repetitions. Most coaches reported decreasing volume during all periods (taper: 89.1%, competitive season: 70.4%, tournament: 84.1%, travel: 74.6%), with the most common reduction in RT volume reported as 0-25%. Most coaches also decreased intensity during a taper (52.9%), tournament (54.8%) and travel (53.6%), with a 0-25% reduction most common. ‘Lack of equipment and facilities’ and ‘scheduling/time’ were common barriers cited to RT prescription during the competitive season (100% for scheduling/time), tournament (55.6% and 50.0%), and travel (57.3% and 60.0%). During a taper, ‘recovery’ was the most reported reason (41.7%). CONCLUSION During planned de-loading periods, both training volume and intensity are generally decreased by coaches compared to periods of normal training. The similarity of barriers to RT prescription during de-load periods suggests the experiences of coaches are not influenced by the phase. To address barriers experienced by some coaches, researchers should examine the use of alternative RT strategies for periods of planned de-loading to maintain training stimulus.

THE INFLUENCE OF RESISTANCE TRAINING VARIABLES ON MUSCLE STRENGTH: A SYSTEMATIC REVIEW AND META-ANALYSIS

BACKGROUND Development of muscle strength through resistance training (RT) is associated with health and performance benefits. Prescribing resistance training utilising six different variables (sets × repetitions × exercises × intensity × frequency × duration) is complex to optimise outcomes. It is unclear if, the prescription of these variables to derive a composite variable, RT dosage, influences the development of muscle strength. OBJECTIVES: This study aimed to investigate if variations in RT dosage influence muscle strength. METHODS CINAHL, MEDLINE, and SPORTDiscus were systematically searched; adults performing RT were compared against non-exercise controls where muscle strength was assessed. Only randomised controlled trials assessing chest and quadriceps muscle strength were considered. The six RT variables were extracted from eligible studies and were multiplied to generate RT dosage. Quadratic non-linear regressions were performed on pooled muscle strength data. Variable importance and model selection were performed to explore different linear combinations of RT variables to determine the most effective variable in developing muscle strength. RESULTS 207 articles were eligible that enabled the calculation of RT dosage. Meta-analyses confirmed a significant effect of RT on muscle strength (SMD ≥ 1.3, CI = 1.1-1.6, p &amp;lt; 0.001). Quadratic non-linear regression models for the chest and quadriceps strength indicated that RT dosage as a continuous variable showed a significant dose-response for muscle strength (SMD = &amp;gt; 1.5, CI = 0.01-3.1, P &amp;lt; 0.05). The individual variables of most importance to develop muscle strength appear to be volume and duration (p &amp;lt; 0.03). CONCLUSIONS As expected, RT significantly influences muscle strength and as RT dosage increases, so too does muscle strength; however, only up to a point (∼1.5 million arbitrary units) before further increases in RT dosage don’t appear to further develop muscle strength. Prescription of RT volume and duration should be prioritised for developing muscle strength.

Bigger calves from doing higher resistance training volume?

We compared the effects of different calf training weekly sets on muscle size changes. Sixty-one untrained young women performed a calf training program for 6 weeks, 3 d·wk-1, with differences in the resistance training volume. The participants were randomly assigned to 1 of the 3 groups: 6-SET, 9-SET, and 12-SET calf training weekly sets. The calf raise exercise was performed in sets of 15-20 repetitions maximum. The muscle thickness measurements of medial gastrocnemius (MG), lateral gastrocnemius (LG), and soleus (SOL) were taken via B-mode ultrasound. We used the sum of the three-muscle thickness as a proxy for the triceps surae (TSSUM). The 12-SET group elicited greater increases than 6-SET in LG (6-SET = +8.1% vs. 12-SET = +14.3%; P = 0.017), SOL (6-SET = +6.7% vs. 12-SET = +12.7%; P = 0.024), and TSSUM (6-SET = +6.9% vs. 12-SET = +12.0%; P = 0.005), but there was no significant difference in MG changes (6-SET = +6.6% vs. 12-SET = +9.9%; P = 0.067). There were no significant differences when comparing 9-SET vs. 6-SET and 12-SET (P ≥ 0.099). Although all groups experienced calf muscle hypertrophy, our results suggest that the higher dose range may optimize triceps surae muscle size gains.

Associations Between Resistance Training and All-Cause Mortality: NHANES 1999-2006

Background: The Physical Activity Guidelines 2nd Edition recommends ≥2 days of resistance training (RT). Evidence supports a dose-response relation between RT volume and cardiometabolic health. We examined whether RT guidelines and volume were associated with lower all-cause mortality. Methods: Participants from the 1999-2006 NHANES cycles (N = 5855) self-reported the past 30 days of physical activity including the number of sessions, average session duration in minutes, and activity type. Mortality was ascertained from the linked National Death Index through the end of 2019. Cox proportional hazards regression was used to estimate hazard ratios for all-cause mortality by RT Guideline adherence and per 1000 MET-minutes of monthly RT volume. Results: Approximately 1-in-10 participants met the RT Guidelines (n = 612, 11.6%). The mean monthly RT volume was 2033.3 ± 2487.7 MET-minutes. Mortality incidence was 10.6% (n = 886). Neither meeting the Guidelines (HR [95% CI]; 1.02 [.74, 1.41], compared to not meeting the Guidelines) nor monthly RT volume per 1000 MET-minutes (1.02 [.92, 1.14]) was associated with all-cause mortality in adjusted models, with no evidence of effect modification by sex or age. Conclusions: The present study did not find an association between RT and all-cause mortality. These results do not support the RT canon, warranting further investigation.

THE ‘OSTEOSTASIS’ AND ITS FIVE PRINCIPLES: APPLICATION IN LIMB LENGTHENING

IntroductionHumans Functions (locomotion, protection of organs, reproduction) require a strong support system (bones). The ‘Osteostasis’ is the ability of maintaining the bone structure, its mechanical characteristics and function. Five principles are required for an efficient bone system:Basic Requirements:1) Stability and 2) Function. Repair System (like house building in desert or sea):3) Roads (vessels), 4) Materials (calories, proteins), 5) Workers (bone cells).Analysis of bone problems through these principles bring to optimised treatments.Materials &amp; MethodsMeasurements (&gt;700 lengthening, 32-year follow-up, Full WB Albizzia/G-Nails FWBAG): Bone-DEXA, WB conditions, muscle, fat, etc.Principle-1. Solid bone replacement with a 100% biocompatible and reliable FWBAG with sports (POD0).Principle-2. Bone, Muscle &amp; neural integrity for function Principle-3. Vascular flow lesions induce non-healing (arteriography). Muscle activity accounts for 90% of bone blood flow, ×10 by sports. Required: Checks (arteriography) and treatments (training)Principle-4. Food (NRV Kcal × 2–3, 20–25% proteins).Principle-5. Maintain bone cells and increase them. Suppress ‘opening’, ‘venting’, ‘drainages’.ResultsPrinciple1. Nail fracture (1.2%), nail dysfunction (0%) with FWBAG.Principle2. Intensive sports preop and from POD0 - Principle3. Increased preop vascular supply &amp; muscle force, postop resistance sports fasten recovery. Wheel-chair or low activity decreases healing.Principle4. 6–9 cm circumference loss (non WB-nails or no proper training); 0 cm circumference loss (gain &lt;10 cm) with intense resistance training + high calory intake. - Principle5. Bone cells preservation (no opening, IM saw, increasing bone cells) allow Healing Index down to 8D/cm.ConclusionsThe ‘5P’ allow reaching treatment targets by optimisation of problem solving, maintaining Osteostasis. What would I like or tolerate for me? How can I reach it? Full WB and sports from POD0 was a target 38 years-ago, still not enforced by most of us. Resistance sports, high-calory intake suppress muscle loss and fasten healing, thanks to muscle blood flow and the ‘5P’.

NOT LOSING ONE CM OF MUSCLE CIRCUMFERENCE DURING EXTENSIVE BONE LENGTHENING: A PACT WITH THE DEVIL OR THE ANGELS?

IntroductionA 6cm femoral gain requires 5-Y during normal growth, but only 6–8-W surgically (x30–40 faster). In lengthening surgery, losses of muscle force (MF) and circumferences (MC) are major. Recovery is long, preventing sports till bone fusion.Can we maintain MC and strength throughout the entire lengthening and how?We monitored for over 30 years patients for muscle force (isokinetic), circumferences, activities (including sports) and food intake, and acted on the 5 principles of the Osteostasis.Materials &amp; MethodsOver 750 femoral lengthening with Full WB Nails (FWBN) got Isokinetic testing (≧1991), circumferences measurements (≧2012; 20-15-10-5-0cm above patella, max-calf, mini/max-ankle), food intake (≧2012), using MyFitnessPal App (≧2016), gradually enforced. Preoperative training along with a daily post-operative training are supervised by our trainers. Recommendations for food intake and activities were provided. Patients noted on a specific App all parameters. Compliance was noted.ResultsInstead of a traditional 7–9cm circumference loss for 8–10cm gains using Ex-fix or nails, with FWBN and our protocols, no MC loss could be noted in compliant pre-trained patients, intensive early post-op resistance training, high calory intake (M:&gt;4200, F:&gt;3000; 20–25% Proteins) and supplements (no fat pad increase). Bone fusion could be obtained at the end of lengthening or within short weeks (Healing Index down to 8D/cm)Non-compliant patients (or using morphine), lost weight and MC.ConclusionsIncreasing by 8–10cm muscle length, even bilaterally, and maintaining MC during lengthening, is possible, with very fast bone fusion. It requires building up several hundred of grams of muscles.The ‘building up equation’ associating resistance bike from the early post-operative phase with sports, strong food intake with increased protein intake, and added supplements with no morphine medication, proved to boost circumferences and bone fusion. It induced fast recovery, walking and sports capacities.

The Effect of Time-Equated Concurrent Training Programs in Resistance-Trained Men.

The purpose of this investigation was to compare the effects of three different concurrent training (CT) programs and a resistance training (RT) program. Twenty-three resistance trained men (age: 24 ± 3 years) were randomized into four groups: concurrent RT and high intensity interval cycling (CTH, n = 6), concurrent RT and moderate intensity continuous cycling (CTM, n = 5), RT and barbell circuit training (RTC, n = 6), or RT only (RT, n = 6). Back squat and bench press strength, quadriceps, and pectoralis muscle thickness, VO2peak, and maximum workload (Wmax, Watts) were assessed. Squat strength gains were meaningful in all groups and comparable among CTH (16.88 kg [95% CrI: 11.15, 22.63]), CTM (25.54 kg [95% CrI: 19.24, 31.96]), RTC (17.5 kg [95% CrI: 11.66, 23.39]), and RT (20.36 kg [95% CrI: 15.29, 25.33]) groups. Bench press strength gains were meaningful in all groups and comparable among CTH (11.86 kg [95% CrI: 8.28, 15.47]), CTM (10.3 kg [95% CrI: 6.49, 14.13]), RTC (4.84 kg [95% CrI: 1.31, 8.47]), and RT (10.16 kg [95% CrI: 7.02, 13.22]) groups. Quadriceps hypertrophy was meaningful in all groups and comparable among CTH (2.29 mm [95% CrI: 0.84, 3.76]), CTM (3.41 mm [95% CrI: 1.88, 4.91]), RTC (2.6 mm [95% CrI: 1.17, 4.05]), and RT (2.83 mm [95% CrI: 1.55, 4.12]) groups. Pectoralis hypertrophy was meaningful in CTH (2.29 mm [95% CrI: -0.52, 5.1]), CTM (5.14 mm [95% CrI: 2.1, 8.15]), and RTC (7.19 mm [95% CrI: 4.26, 10.02]) groups, but not in the RT group (1 mm [95% CrI: -1.59, 3.59]); further, between-group contrasts indicated less pectoralis growth in the RT compared to the RTC group. Regarding cardiovascular outcomes, only the RTH and RTM groups experienced meaningful improvements in either measure (VO2peak or Wmax). These data suggest that the interference effect on maximal strength and hypertrophy can be avoided when the aerobic training is moderate intensity cycling, high intensity cycling, or a novel barbell circuit for ~one hour per week and on non-RT days. However, the barbell circuit failed to elicit meaningful cardiovascular adaptations.

Feasibility and Usefulness of Repetitions-In-Reserve Scales for Selecting Exercise Intensity: A Scoping Review.

The intensity of resistance training (RT) exercise is an important consideration for determining relevant health and performance-related outcomes. Yet, current objective exercise intensity measures present concerns in terms of viability or cost. In response to these concerns, repetition-in-reserve (RIR) scales may represent an adequate method of measuring and regulating intensity. However, no recent review has focused on how RIR scales have been used for this purpose in prior research. We prepared the present scoping review to analyze the feasibility and usefulness of RIR scales in selecting RT intensity. We conducted a systematic search in PubMed, SPORTDiscus, PsycINFO, and ClinicalTrials.gov databases (last search date April 2023) for experimental and non-experimental studies that utilized an RIR scale to measure proximity to failure in RT activities with apparently healthy individuals of any age. We qualitatively analyzed 31 studies (N = 855 mostly male adult participants) published between 2012-2023. RIR scales appeared to be contextually feasible and useful in prescribing and adjusting RT intensity. The most common trend in this research was to prescribe a target RIR and adjust the exercise load for a desired proximity to muscle failure. Additionally, when measuring proximity to failure as an outcome of interest, the literature suggests that the RIR prediction should be made close to task failure to increase its accuracy. Future research should further explore the impact of sex, RT experience, exercise selection, and muscle conditioning on the overall RIR approach.

Effects of high-intensity and progressive volume resistance training on functional, mental states, and quality of life of people with spinal cord injury

Effects of high-intensity and progressive volume resistance training on functional, mental states, and quality of life of people with spinal cord injury

Qualitative Description of the Exertional Symptoms of Participants with Persistent Symptoms of Lyme Disease during a Low Intensity Resistance Training Intervention

Introduction: Greater emphasis needs to be placed on approaches to improve the health-related quality of life of patients with persistent symptoms of Lyme disease (PSLD), but little information exists to inform an exercise professional’s expectations of their supervision of resistance training (RT) programs with PSLD patients. In order to build this knowledge base, a secondary qualitative analysis was performed to explore the RT exertional symptoms of PSLD patients that participated in a 4-week study investigating the feasibility of an RT intervention. Methods: Comments regarding exertional symptoms that were recorded in a daily exercise log were the main source of data for this secondary analysis. A manifest content analysis was performed in order to identify recurrent themes of exertional symptoms experienced by this sample of PSLD patients during RT. Results: The reported findings revealed that strain, discomfort, crepitus, tightness, shaking, and control loss were the major themes of exertional symptoms recorded during the RT intervention. Conclusions: These results provide insights intended to inform the expectations of supervisors of exercise (personal trainers, physical therapists, exercise researchers, etc.) when directing RT programming with patients with PSLD.

Blood Flow Restriction and Veterans with Multiple Sclerosis (BRaVe-MS) and Advanced Disability: Protocol for a Randomized Controlled Trial.

The purpose of this study will be to determine the efficacy of low intensity lower extremity resistance training with and without blood flow restriction on quadriceps muscle strength and thickness in veterans with advanced multiple sclerosis (MS). This will be an assessor-blinded, 2-group (1 to 1 allocation) randomized controlled trial targeting an enrollment of 58 participants with advanced MS as defined by Patient-Determined Disease Steps scale levels 4 to 7. Both groups will complete 10weeks of twice weekly low-load resistance training (20% to 30% of 1-repetition max) targeting knee and hip extension, knee flexion, and ankle plantarflexion. The intervention group will perform all training using blood flow restriction, with limb occlusion pressures between 60% to 80% of maximal limb occlusion pressure. Primary outcomes will be quadriceps muscle strength and thickness. Secondary outcomes will include knee flexion and ankle plantarflexion strength, functional mobility, physical activity, and patient-reported measures. All outcomes will be assessed at baseline before the intervention, immediately after the intervention, and at a 2-month follow-up assessment. The change between groups post-intervention and after the 2-month follow-up will be reported for all outcomes. All analyses will assume a 2-sided test of hypothesis (α= .05). There is very little evidence for the efficacy of exercise interventions in people with MS who have advanced mobility disability. Resistance training with blood flow restriction may be an important approach for people with advanced MS who may not tolerate more conventional, moderate-to-high intensity resistance training. The results of this study will inform clinicians regarding exercise decisions for people with advanced MS and future investigations on the role of blood flow restriction in people with MS.

The Relationship Between Cell-Free DNA and Resistance Training Volume Load.

Lang, HM, Duffourc, MM, Bazyler, CD, Ramsey, MW, and Gentles, JA. The relationship between cell-free DNA and resistance training volume load. J Strength Cond Res XX(X): 000-000, 2024-The primary purpose of this study was to assess the sensitivity of cell-free DNA (cf-DNA) to different resistance training volume loads. The secondary purpose was to examine the relationship between change in cf-DNA and relative strength. Researchers hypothesized that (a) cf-DNA concentrations would increase with increasing volume load and (b) increases in relative strength would result in predicted decreases to %Δ of cf-DNA. Thirty subjects were recruited for this study, 15 men and 15 women. Blood was collected through venous draws into 4-ml vacutainers at 3 time points: immediately before (T1), after 3 sets (T2), and after 6 sets (T3) of the back squat exercise. A critical alpha of 0.05 was set for inferential statistics. A repeated-measures ANOVA showed that cf-DNA increased significantly from T1 (407.72 ± 320.83) to T2 (1,244.6 ± 875.83) (p < 0.01) and T1 (407.72 ± 320.83) to T3 (1,331.15 ± 1,141.66) (p < 0.01), whereas no difference was found from T2 to T3 (p = 1.00). The linear regression model used to examine the predictive capabilities relative strength had on cf-DNA %Δ from T1 to T3 was found to be significant (p = 0.04; R2 = 0.15). The results of this study demonstrate the short response of cf-DNA in relation to variations in resistance training volume load. Results also demonstrated the positive relationship between relative strength and cf-DNA %Δ. The current study builds on the body of research that cf-DNA provides insight regarding the level of immune response after exercise training.

The Effect of High Intensity Interval Training and Resistance Training in Altering Body Composition of Obese Postmenopausal Women

Background: This study was designed to evaluate the effectiveness of High Intensity Interval Training (HIIT) andResistance training (RT) on obese postmenopausal women in altering body composition.Purpose: To compare the effectiveness of High Intensity Interval Training and Resistance Training in alteringbody composition of post-menopausal womenMaterials and Methods: Twenty obese postmenopausal women randomly selected from Poongothai hospital, karur were divided into two groups using concealed envelope method. Group “A” was given HIIT threetimes a week and Group “B” was given RT three times a week for four weeks. Body mass index (BMI), WaistCircumference (WC), Waist Hip Ratio (WHR) were used to evaluate body composition at two intervals (pre andpost intervention).Study period:October 2022 to June 2023.Results: Statistical analysis show that there is a significant change within the group for BMI, WC, and WHR preand post intervention with a p&lt;0.0001 for both groups A and B. The mean value of HIIT group was 30.2 using BMI,92.90 using WC, 0.92 using WHR, whereas the mean values of RT was 30.4 using BMI, 93.0 using WC, 0.94 usingWHR As a result, the findings are not statistically as the differences were small.Conclusion: According to the findings, obese postmenopausal women who took part in the HIIT Group showsconsiderable reduction in body composition than RT Group.

Higher resistance training volume offsets muscle hypertrophy nonresponsiveness in older individuals.

The magnitude of muscle hypertrophy in response to resistance training (RT) is highly variable between individuals (response heterogeneity). Manipulations in RT variables may modulate RT-related response heterogeneity; yet, this remains to be determined. Using a within-subject unilateral design, we aimed to investigate the effects of RT volume manipulation on whole muscle hypertrophy [quadriceps muscle cross-sectional area (qCSA)] among nonresponders and responders to a low RT dose (single-set). We also investigated the effects of RT volume manipulation on muscle strength in these responsiveness groups. Eighty-five older individuals [41M/44F, age = 68 ± 4 yr; body mass index (BMI) = 26.4 ± 3.7 kg/m2] had one leg randomly allocated to a single (1)-set and the contralateral leg allocated to four sets of unilateral knee-extension RT at 8-15 repetition maximum (RM) for 10-wk 2 days/wk. Pre- and postintervention, participants underwent magnetic resonance imaging (MRI) and unilateral knee-extension 1-RM strength testing. MRI typical error (2× TE = 3.27%) was used to classify individuals according to responsiveness patterns. n = 51 were classified as nonresponders (≤2× TE) and n = 34 as responders (>2× TE) based on pre- to postintervention change qCSA following the single-set RT protocol. Nonresponders to single-set training showed a dose response, with significant time × set interactions for qCSA and 1-RM strength, indicating greater gains in response to the higher volume prescription (time × set: P < 0.05 for both outcomes). Responders improved qCSA (time: P < 0.001), with a tendency toward higher benefit from the four sets RT protocol (time × set: P = 0.08); on the other hand, 1-RM increased similarly irrespectively of RT volume prescription (time × set: P > 0.05). Our findings support the use of higher RT volume to mitigate nonresponsiveness among older adults.NEW & NOTEWORTHY Using a within-subject unilateral design, we demonstrated that increasing resistance training (RT) volume may be a simple, effective strategy to improve muscle hypertrophy and strength gains among older adults who do not respond to low-volume RT. In addition, it could most likely be used to further improve hypertrophic outcomes in responders.

Application Of Resistance Training And Strength Exercises For Improving Explosive Force In Students Of Sports University Of Tirana

Application Of Resistance Training And Strength Exercises For Improving Explosive Force In Students Of Sports University Of Tirana

Investigating the Effects of High Intensity Resistance Training on Physical Fitness of University Male Football Players

High intensity resistance training (HIRT) can enhance strength, power, speed, agility, endurance and reduce injury risk in football players contributing to improved performance on the field. The purpose of this study was to determine eight-week high intensity resistance training (HIRT) intervention affected the physical fitness of male university football players. A randomized controlled design was adopted for the study and (n=24) football players between the ages of 19 and 25 took part. Before and during the intervention, which included three weekly training sessions, the participants were evaluated. The Yo Yo intermittent recovery test level 1 (YYIRT1), the 30 m sprint time (ST), the running based anaerobic sprint test (RAST) and the change of direction time (COD) were among the physical fitness tests. Following the eight week HIRT intervention, all experimental group variables revealed significant changes between pre- and post-tests.

Effect of a Course of Resistance Training on the Serum Levels of Interleukin-17 and Interferon-β in Women with Multiple Sclerosis

Cytokines play an important role in my disease and are considered an important target for therapeutic interventions. the purpose of this research is to investigate the effect of a period of resistance training on the serum level of 17 and interferon beta in young women with MS. Was. Method: The present study was conducted in a semi-experimental way with a pre-test and post-test design. 30 women with MS with age range of 30-35 years were randomly selected in two exercise and control groups. Resistance exercises were performed for 8 weeks and three sessions a week, each session lasting 60 minutes with an intensity of 60-70% of the maximum heart rate. Blood samples were taken before and after the training protocol with 12 hours of fasting and the levels of interleukin 17 and beta interferon were measured by ELISA method. Data were analyzed using SPSS version 22 software and covariance test. Results: The results showed that after 8 hours of resistance training intervention, the amount of interleukin 17 in the training group decreased significantly and the amount of beta interferon showed a significant increase compared to the control group Conclusion: Since moderate intensity resistance training decreased interleukin 17 and increased beta interferon in patients with MS, it seems that exercise intervention can be used to treat and prevent the progression of MS along with used drug treatments.