High-intensity Circuit Training Research Articles

Acute Effects of High-intensity Circuit Training Using Body Weight on Body Composition Indices in Sedentary Collegiate Females

High-intensity circuit training (HICT) has become increasingly popular for enhancing health and fitness. However, limited research exists on the effects of high-intensity circuit training using body weight (HICTBW) on body composition in sedentary young adults. This study aimed to explore the impact of a 4-week HICTBW program on body composition in sedentary collegiate females. A randomized controlled trial design was employed. Twenty sedentary collegiate females were randomly assigned to either a training group (n=10), which participated in a 4-week HICTBW program, or a control group (n=10), which did not engage in any training. Body composition was assessed using bioelectrical impedance analysis (r = 0.642 to 0.78), measuring body fat percentage, fat mass, muscle mass, waist-to-hip ratio, and body mass index (BMI). Repeated measure ANOVA was used to compare between and within groups. Although no significant differences in body composition variables were observed between pre- and post-training (p>0.05), slight positive changes were noted in all measured parameters. The lack of significant findings may be attributed to the short duration and frequency of the intervention. Future studies with extended training periods are recommended to better understand the potential impact of HICTBW on body composition in sedentary collegiate females. This research highlights the need for more comprehensive studies to validate the effectiveness of HICTBW in improving body composition among this population.

Effectiveness of High-Intensity Circuit Training on Physical Fitness Among Athletes: A Systematic Review of Randomized-Controlled and Non-Controlled Trials

Background and Aim of the Study: The continuous evolution of sports and athletics necessitates innovative training strategies to optimize athletes’ performance and physical fitness. High-Intensity Circuit Training (HICT) has emerged as a time-efficient method that combines high-intensity exercises with minimal rest, targeting various muscle groups to enhance physical fitness components. Therefore, this systematic review aims to evaluate the effectiveness of HICT on physical fitness components among athletes to provide a clear, evidence-based understanding of HICT’s benefits and limitations. Material and Methods: A comprehensive search strategy was employed, retrieving articles published before September 24, 2023, from databases including the Cochrane Central Register of Controlled Trials, PubMed, and Google Scholar. The selection process followed the PRISMA guidelines, focusing on studies that assessed the impact of HICT on athletes’ physical fitness. The quality of included studies was assessed using the PEDro scale, and data synthesis was conducted to summarize findings on various physical fitness components. Results: The review included 13 studies, highlighting HICT’s positive effects on muscle strength, endurance, flexibility, balance, power, body composition, and cardiovascular endurance. Improvements were noted in neuromuscular efficiency, muscle power, coordination, and cardiovascular fitness, which are crucial for athletic performance. However, the review also identified variability in training adaptations and the need for sport-specific exercises to maximize the benefits of HICT for speed and power enhancements. Conclusions: HICT is a versatile and effective training modality that can significantly improve various aspects of athletes’ physical fitness. Incorporating targeted, sport-specific exercises into HICT programs could further optimize performance enhancements. Despite promising findings, the review acknowledges methodological heterogeneity among studies and calls for further research to refine HICT protocols for athletes.

A Comparative Analysis: Assessing the Efficacy of High Intensity Circuit Training Utilizing Body Weight versus Sports Specific Exercises on Lower Limb Strength, Agility, and Speed among Badminton Players - Preliminary Investigation

A Comparative Analysis: Assessing the Efficacy of High Intensity Circuit Training Utilizing Body Weight versus Sports Specific Exercises on Lower Limb Strength, Agility, and Speed among Badminton Players - Preliminary Investigation

The effect of different high-intensity interval training protocols on cardiometabolic and inflammatory markers in sedentary young women: A randomized controlled trial

ABSTRACT Few studies have reported the cardiovascular health effects of different high-intensity interval training (HIIT) protocols among sedentary young women. We investigated the impact of a traditional HIIT programme and a high-intensity circuit training (HICT) programme on lipid profiles and inflammatory cytokine levels in sedentary young women. Forty-two women were randomly assigned to HICT (body weight-based training), HIIT (cycling-based training), or control groups (n = 14 each). HICT and HIIT participants completed an 8-week training programme of three sessions per week. Total cholesterol (TC), triglyceride, high- and low-density lipoprotein, leptin, resistin, tumour necrosis factor-alpha (TNF-α), interleukin-8, and interferon-gamma levels were measured before and after the intervention. Post-intervention, TC and leptin were decreased in the HICT group. The HICT group also demonstrated increased lean mass, upper and lower limb strength, and balance, while the HIIT group displayed improved lower limb strength. Additionally, the control group showed significant increases in triglyceride levels, weight, body mass index, and fat mass. In conclusion, although both HICT and HIIT interventions showed improvements in cardiovascular health and physical fitness, participants in the HICT group experienced more health benefits.

Effect of high intensity circuit training on muscle mass, muscular strength, and blood parameters in sedentary workers.

The study aim was to investigate the effect of high intensity circuit training on body composition, muscular performance, and blood parameters in sedentary workers. A total of 36 middle-aged sedentary female workers were randomly divided into high intensity circuit training (HICT) group, aerobic training (AT) group, and control (CON) group. The exercise training groups performed exercise three times per week for 8 weeks. In HICT, each session was 20-35 min with 2-3 rounds. Rounds were 8 min; the interval between rounds was 4-5 min. In AT, each exercise session comprised 20-35 min of aerobic dance training. Physiological parameters were measured 1 week before and after the interventions. The resulting data were analyzed using two-way mixed design ANOVA, the differences in body composition, muscular performance and blood parameters before and after training were compared. The muscle mass (pre-test: 21.19 ± 2.47 kg; post-test: 21.69 ± 2.46 kg, p < 0.05) and knee extension 60°/s (pre-test: 82.10 ± 22.26 Nm/kg; post-test: 83.47 ± 12.83 Nm/kg, p < 0.05) of HICT group were significantly improved, with knee extension 60°/s significantly higher than that of the CON group (HICT: 83.47 ± 12.83 Nm/kg; CON: 71.09 ± 26.53 Nm/kg). In the AT group, body weight (BW) decreased significantly (Pre-test: 59.37 ± 8.24 kg; Post-test: 58.94 ± 7.98 kg); no significant change was observed in CON group. The groups exhibited no significant change in blood parameters (hs-CRP, TC, and LDL-C) or IGF-1. Sedentary worker's muscle mass and lower-limb muscular performance were effectively improved by performing 8-week HICT with the benefits of short duration, no spatial constraints, and using one's BW, whereas AT caused a significant decrease in BW. However, the AT induced decrease in BW was probably an effect of muscle loss rather than exercise-induced weight loss.

The effect of high-intensity circuit training on physical fitness in healthy young males

Sedentism, along with a lack of physical activity, contributes to a decline in quality of life and is the fourth greatest cause of mortality. Changing sedentary lifestyle choices, such as increased physical exercise, is a method of health problem prevention. As a result, the purpose of this study is to investigate the effect of high-intensity circuit training on developing physical fitness in young healthy guys. A proper experimental procedure was employed in this investigation, including a pre-test - post-test control group design. Twenty Malang City students aged 19 to 22 were selected and separated into CNTL (control group) and HICT (high-intensity circuit training group). The high-intensity circuit training (HICT) intervention was performed three times per week for eight weeks. Physical fitness (VO2max, strength, speed, and agility) was assessed pre- and post-intervention. An independent sample t-test with a significance threshold of 5% is used in the data analysis procedure. The findings revealed a delta (∆) difference in the average gain in physical fitness (VO2max, strength, speed, and agility) between CNTL and HICT (p ≤ 0.01). This study shows that high-intensity circuit training done three times per week for eight weeks improves physical fitness in healthy young males. Keywords: Healthy male; high-intensity circuit training; physical fitness; sedentary lifestyle

Ab. No. 154 Effect of High Intensity Circuit Training on Central Fatigue and Cognitive Function Among Recreational Athletes: An Annotated Bibliographic Review

Introduction: Circuit training is a type of training evolved by Morgan and Anderson in 1953. This training involves “a circuit” including 6-9 exercises (aerobic exercises, resistance exercise etc). Averting fatigue is an area of discussion nowadays for recreational athletes too along with professional athletes. This concern needs comprehension about the fatigue’s understanding, its aetiology and mechanisms. Central fatigue stipulates decrease in voluntary activation during exercise. The type, duration and intensity of exercise are several factors which are responsible for the magnitude of fatigue as well as cognitive function. The aim of the present study is to find out the effect of circuit training on fatigue and cognitive function among recreational athlete. Methods: A literature search was performed using Google Scholar, PubMed and Cochrane databases. A total of more than 50 articles showed up on PubMed and 15 on Cochrane with the term “recreational athletes”. The search terms used were ‘circuit training’, ‘central fatigue’, ‘recreational athletes’, ‘cognition’, ‘beep test’, ‘GPAQ’. In order to decrease the risk of neglecting relevant articles, a detailed research plan was created. Articles were evaluated with central fatigue &amp; Stroop test and the effect of high resistance circuit provided to recreational athletes were included. Exercise interventions other than high resistance circuit training were excluded. The articles were checked thoroughly and only full text articles were included for this review. These studies were reviewed in a narrative way. Conclusion: This bibliographic study conclude that the circuit and high intensity resistance training has improved various parameters such as resistance to fatigue, cognitive function in recreational athletes.

A Description of Exercise Programs Implemented During a Firefighter Training Academy.

The aim of the study is to thoroughly describe exercise programs that were performed during a firefighter training academy, including their effects on body composition and physical fitness. Fourteen recruits performed exercise programs during a 24-week training academy and several components of their body composition and physical fitness were measured. Moreover, their heart rate (HR) and session rating of perceived exertion (sRPE) were recorded during and after every training session, respectively. Fat-free mass, subcutaneous fat in the abdomen, cardiovascular fitness, flexibility, lower-body power, and muscular endurance significantly improved during the study ( P ≤ 0.05). The highest HR and sRPE responses were observed during aerobic training (AT) sessions. The average HR responses relative to maximum HR were similar during AT, high-intensity circuit training, multimodal high-intensity interval training, and high-intensity functional training; however, the sRPEs during high-intensity circuit training and multimodal high-intensity interval training were significantly lower than AT. Several effective exercise programs can be implemented during firefighter training academies.

Effect of High-Intensity Circuit Training versus Low-Intensity Interval Training on Functional Strength and Weight Efficacy in Overweight and Obese Young Females: A Randomized Clinical Trial

Effect of High-Intensity Circuit Training versus Low-Intensity Interval Training on Functional Strength and Weight Efficacy in Overweight and Obese Young Females: A Randomized Clinical Trial

The Effects Of High-intensity Circuit Training On Sleep And Mental Health In Female Inactive College Students

The Effects Of High-intensity Circuit Training On Sleep And Mental Health In Female Inactive College Students

Effects Of 8-week High-intensity Circuit Training On Lipid Profile And Adipokine In Sedentary Young Females

Effects Of 8-week High-intensity Circuit Training On Lipid Profile And Adipokine In Sedentary Young Females

High-intensity circuit training change serum myostatin but not myogenin in adolescents’ soccer players: a quasi-experimental study

BackgroundSkeletal muscle contractions due to exercise lead to the secretion of many proteins and proteoglycan peptides called myokines. Myostatin (MSTN) and Myogenin (MyoG) are two of the most important skeletal muscle growth regulatory factors related to myoblast differentiation and muscle hypertrophy. The present study aims at investigating the effects over eight weeks of high-intensity circuit training (HICT) on serum MyoG and MSTN in male soccer players.MethodThe present study is a quasi-experimental study on 21 male soccer players (Experimental group: n = 11, Control group: n = 10) (ages 15.0 ± 3.4 years, body mass 55.7 ± 7.8 kg, height 173.3 ± 8.0 cm, Body mass index 18.4 ± 1.9 kg m−2, maximum oxygen uptake 61.89 ± 3.01 ml kg−1 and the peak height velocity 14.5 ± 0.3 years). Participants were randomly divided into two groups: training group and a control group. The first resting blood samples were obtained in the morning-fasting state, and the second blood samples were obtained after the maximum aerobic test at pre- and post-HICT.ResultsThere were non-significant differences in resting serum values of MyoG (p = 0.309, p > 0.05) but significant differences in resting serum values of MSTN between the training and control groups after eight weeks of HICT (p = 0.003, p < 0.05). No significant differences were observed between groups in the acute response of serum values of MyoG (p = 0.413, p < 0.05) and MSTN (p = 0.465, p < 0.05) to the maximum aerobic test after eight weeks of HICT.ConclusionThese results suggest that eight weeks of HICT can decrease the resting serum values of MSTN but not change the resting serum values of MyoG in male adolescent soccer players. Also, eight weeks of HICT does not affect the acute response of MSTN and MyoG after a maximum aerobic test.

The comparative effects of periodized lower body strength training versus high intensity circuit programming in experienced runners.

The purpose of this study was to compare the effects of supplementing habitual run training with periodized lower body strength training versus high intensity circuit strength training on running performance and related variables in experienced runners. Nineteen (N.=19) participants performed 8 weeks of 2 d·wk-1 periodized lower body strength training (PLB), N.=9, or high intensity circuit training (CT), N.=10. PLB sessions included 2 sets of the back squat, standing calf raise, leg press, and dumbbell lunge, with intensity linearly periodized. CT sessions simulated CrossFit-style programming and included 2-4 heavy (>10-RM) sets of a compound lift, followed by a high intensity, whole body resistance circuit. Three-km time trial (TT), V̇O<inf>2</inf>max, relative leg press 1-RM, running economy (RE) at 2 standard submaximal velocities (SV1, SV2) between 11 and 14 km∙hr-1, RPE at SV1/SV2, and peak/mean power were assessed pre and postintervention. Similar (P≤0.02) increases occurred in RE at 11 km∙hr-1 (36.4±3.1 to 35.4±2.4 mL·kg-1·min-1) and RPE at SV1 (12.5±1.3 to 11.4±1.6). Relative 1-RM (2.54±0.41 to 3.40±0.72) and RPE at SV2 (14.1±1.3 to 12.9±1.8) improved in both groups (P≤0.03). However, PLB showed larger improvements in 1-RM (0.43±0.18 vs. 0.2±1.9, t=2.75, P=0.015) and RPE at SV2 (-1.75±0.9 vs. -0.63±1.1, t=2.30, P=0.037). TT, V̇O<inf>2</inf>max, RE at 12-14 km∙hr-1, and power were unchanged (P≥0.27). PLB and CT enhanced 1-RM, RE at 11 km∙hr-1 and RPE at SV1/SV2, but neither modality improved TT performance, V̇O<inf>2</inf>max, anaerobic power, or RE at faster velocities. PLB resulted in greater improvements in 1-RM and RPE at SV2.

Effect of a High-Intensity Circuit Training Program on the Physical Fitness of Wildland Firefighters.

Wildland firefighting implies high physical and psychological demands for the personnel involved. Therefore, good physical fitness can help increase the work efficiency of wildland firefighters (WFFs) and safeguard their health. High-intensity circuit training (HICT) could be a good alternative to improve the physical condition of WFFs since it stands out for its functionality and economy. Therefore, the objective of this study was to analyze the effects of HICT on the WFFs' physical fitness. The study involved 9 WFFs (8 males and 1 female; 29.8 ± 2.8 years; 175.6 ± 6.7 cm) who completed a training program and 9 WFF candidates (8 males and 1 female; 24.7 ± 6.6 yr, 176.5 ± 7.0 cm) as a control group. WFFs performed an 8-week HICT program (two weekly training sessions). The training sessions lasted approximately 45 min and were performed at an intensity >80% of maximal heart rate and RPE values >7.5. At the beginning and the end of the intervention, subjects' physical fitness (i.e., aerobic capacity, cardiorespiratory endurance, muscular resistance and explosive strength) was assessed through different tests. After completing the training program, WFFs had significantly increased (p < 0.05) the speed at which the ventilatory thresholds were determined (12.4 ± 13.9 and 5.7 ± 7.3% for the ventilatory and respiratory compensation thresholds, respectively) and also their abdominal (31.2 ± 17.2%), lumbar (34.1 ± 13.5%) and upper limb (13.3 ± 16.0%) strength. Moreover, improvements (p < 0.05) in the explosive strength of legs (7.1 ± 5.8%) and performance in a specific physical employment test (12.2 ± 6.1%) were observed. In conclusion, the results of this study show that an 8-week high-intensity circuit training program could be an effective and safe method to improve WFFs' physical fitness and performance.

Effect of High Intensity Circuit Training on Central Fatigue and Cognitive Function among Recreational Athletes: An Annotated Bibliographic Review

- [Purpose] Averting fatigue is an area of discussion nowadays not only for professional athletesbut also for recreational athletes. It requires comprehension about understanding of fatigue, it’s aetiology andmechanisms. (Mostafa, 2014). Central fatigue stipulates decrease in voluntary activation during exercise. Circuittraining is a type of training evolved by Morgan and Anderson in 1953. This training involves “A Circuit”including 9-12 exercises (aerobic exercises, resistance exercise etc) at nine moderate paces. It includes severalcircuits with short breaks between them. Every recreational athlete encounters fatigue in day-to-day life (Bart,2010). The type, duration and intensity of exercise are several factors which are responsible for peripheral andcentral fatigue. Total of more than 20 full text articles were included in this review. A literature search wasperformed using Google Scholar, PubMed and Cochrane databases. A total of more than 60 articles showed upon PubMed and 15 on Cochrane with the term “recreational athletes”. Exercise interventions other than highresistance circuit training were excluded. The articles were checked thoroughly and only full text articles wereincluded for this review. These studies were reviewed. This bibliographic study conclude that the circuit andhigh intensity resistance training has improved various parameters such as resistance to fatigue and cognitivefunction among recreational athletes. High Intensity Circuit Training has positive effect on cognitive functionand resistance to fatigue among recreational athletes.

Utjecaj kružnog treninga cijelog tijela na sastav tijela i kardio-respiratornu kondiciju kod odraslih osoba s prekomjernom tjelesnom težinom i sjedilačkog načina života

Obesity and low cardiorespiratory fitness are major risk factors for numerous non-communicable diseases and mortality, and efficient treatment protocols to counteract these conditions are highly warranted. We evaluated the effect of high-intensity circuit training (CIT) on body composition and cardiorespiratory fitness of sedentary overweight individuals. Cardiorespiratory and body composition were assessed before and after a 8-week circuit training (CIT; four sessions of full-body CIT per week; age, 38 ± 9 years old; height, 174 ± 10 cm; body mass, 93.1 ± 22.2 kg; n = 32), and 8-week inactiv-ity (CON; neither training nor lifestyle changes from week; 0–8 age, 39 ± 7 years old, height, 168 ± 8 cm, body mass, 89.5 ± 17.5 kg; n = 33). The two-way repeated-measures ANOVA revealed moderate to large reductions were observed in body mass, BMI, and fat percentage after CIT (d=0.43–0.81; P&amp;lt;0.05). In contrast, all body composition parameters remained stable after 8-week inactivity (P&amp;lt;0.05). A small to moderate group x moment interaction was found for body mass, BMI and % fat (d=0.10–0.60; P&amp;lt;0.05). Small improvements in VO2max were observed after CIT (d=0.48 [0.11–0.85]; P=0.010), while small to moderate reductions were observed in VO2max and PV were observed after inactivity (d=0.47 [0.11–0.83] and 0.64 [0.26–1.01], respectively; P&amp;lt;0.05). A small moment x group interaction was observed for VO2max (d= 0.19 [0.13–0.26]; P&amp;lt;0.001). Our findings suggest that 8-week of full-body circuit training may improve cardiorespiratory fitness and body composition in sedentary overweight individuals.

Effects of High-Intensity Circuit Training in Obese and Overweight Population: A Randomized Clinical Trial

Obesity is a serious risk for various cardiovascular diseases and is often managed with increased physical activity and exercise. The purpose of this study is to investigate the effects of a minimal dose, High-Intensity Circuit Training (HICT) program on a range of cardiovascular risk factors in obese and overweight individuals.

High-intensity Training And A Low-caloric-diet Improves Maximal Oxygen Consumption And Body Composition In Overweight Adults

Obesity and low cardiorespiratory fitness are global challenges causing a massive burden on the health care system worldwide. Thus, efficient exercise and nutritional interventions are warranted. PURPOSE: We investigate the effect of high-intensity training executed as full body circuit training and a calorie-restricted diet plan on cardiorespiratory fitness and body composition in overweight sedentary adults. METHODS: Sedentary overweight men (n = 34) and women (n = 46) were recruited. The selection criteria were a sedentary lifestyle for the last five years, an age range of 25-55 yrs and a body mass index >25. The study was a randomized controlled trial, where participants were randomized gender-specifically into a high-intensity training group (HIT; age 38 ± 9 (25-54) yrs; height 174 ± 10 cm; weight 96.1 ± 19.3 kg; n = 40) and control group (CON; age 39 ± 7 (27-52) yrs, height 168 ± 8 cm, weight 89.9 ± 17.2 kg; n = 40). HIT completed full-body high-intensity circuit training with 2-4 weekly sessions combined with a calorie-restricted dietary plan for 8 wks. CON had no training or lifestyle changes in the same interval. VO2max-tests and body composition assessments were performed at baseline and post-intervention. RESULTS: VO2max was 2.3 ± 0.6 and 2.1 ± 0.5 L⸱min-1 at baseline in HIT and CON respectively and did not change during the intervention period. However, VO2max adjusted for body weight improved (P < 0.05) by ~7% in HIT (24.5 ± 5.1 vs 25.7 ± 5.5 ml⸱min-1⸱kg-1) during the intervention period with greater (P < 0.05) change score than CON where a reduction (P < 0.05) of ~5% (24.1 ± 5.1 vs 22.6 ± 4.6 ml⸱min-1⸱kg-1) was observed. Body weight decreased (P < 0.05) by 5.9 ± 3.2 kg post-intervention in HIT with higher (P < 0.05) change score than CON (+0.3 ± 1.6 kg). Also, BMI declined (P < 0.05) from 31.8 ± 5.5 to 29.9 ± 4.4 kg/m2 in HIT only. Body fat content was also lowered (P < 0.05) from 32.0 ± 9.5% at baseline to 30.9 ± 9.3% post-intervention in HIT with a greater change score compared to CON. No change was observed in skeletal muscle mass in neither HIT nor CON. CONCLUSION: High-intensity training performed as full body circuit training combined with a caloric-restricted diet over an eight-week period moderately improved body weight adjusted VO2max, but induced a marked weight loss and reduction in body fat content in overweight sedentary adults.

Is Interval Training more Effective and Efficient Workout for Fat Loss Compared to Continuous Training?A Meta-Analysis

Background: Enhancing regular physical activity can lead to substantial health benefits. Interval-based high-intensity circuit training is an effective and efficient way of reducing body fat, yet the comparison between this type of training and long-term moderate-intensity continuous training is equivocal. Objectives: the objective was to conduct a meta-analysis for comparing high-intensity interval training with moderate-intensity continuous training on improving body fat. Method: We searched PubMed, Google Scholar, Scopus, and CINAHL for the following inclusion criteria: (a) Studies that compare high-intensity interval training and moderate-intensity continuous training using body fat as an outcome measure in a healthy population; (b) the frequency of the training at least four weeks; (c) Articles must be in the English language. Result: A total of 325 participants were included in 10 Randomized Control Trials (RCT). Results revealed that interval training has a mild pooled effect in reducing the body fat of the participants with an effect size of (SMD) of 0.26 (95% of CI=0.00 to 74.84) calculated at the random effect model. I2 14.87% (95% CI=0.01 to 0.45) in comparison to moderate-intensity continuous training performed during 6-12 weeks. Conclusion: We concluded that the intensity of effort has a significant impact in reducing fat loss in minimal time compared to continuous long-term exercise with less intensity. Keywords: Body Fat, Continuous training, Interval-Training, Sprint interval, traditional exercises

EFFECT OF HIGH INTENSITY CIRCUIT TRAINING IN PEAK EXPIRATORY FLOW RATE VALUE AMONG MALE YOUNG ADULTS

Background: Lung function has mutual correlation with exercise. Abnormal lung function can affect physical ability to exercise. Otherwise, exercise can increase lung function. Peak expiratory flow rate (PEFR) is a parameter to observe the lung function. High Intensity Circuit Training (HICT) is a combination of aerobic and endurance exercise which has total duration only 7-minutes long. High Intensity Circuit Training can be a good choice for young adults because it does not need much time, easy to be practiced, and beneficial for physical health as well. Objective: To analyze a significant increase in PEFR value after High Intensity Circuit Training for 8 weeks. Methods: This study was a quasi-experimental study with pre-test and post-test comparison group method. Samples were taken purposively from medical student of Diponegoro University (n=56, age=18-21 years old), who were divided into two groups, the control and training group. Peak flow meter was used to measure PEFR value before and after intervention. The data were analysed using Paired T test and Independent T test. Results: A significant increase of PEFR value was found after High Intensity Circuit Training for 8 weeks (p=0.000). The mean difference between pre-test and post-test PEFR value was found increased significantly (p=0.001), that training group had higher score as compared to control group. Conclusion: Regular High Intensity Circuit Training can improve lung function particularly PEFR value in male young adults.