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Full-Text Articles in Life Sciences
Energy Expenditure And Muscular Recruitment Patterns Of Riding A Novel Electrically Powered Skateboard, Anthony J. Robinson, Robert P. Carter, Jonathan D. Browne, Jonathan Hu, Michael T. Arnold, Jaxon T. Baum, Eric V. Neufeld, Brett A. Dolezal
Energy Expenditure And Muscular Recruitment Patterns Of Riding A Novel Electrically Powered Skateboard, Anthony J. Robinson, Robert P. Carter, Jonathan D. Browne, Jonathan Hu, Michael T. Arnold, Jaxon T. Baum, Eric V. Neufeld, Brett A. Dolezal
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1783-1793, 2020. Analysis of metabolic gas exchange and muscular output measures have enabled researchers to index activity intensity and energy expenditure for a myriad of exercises. However, there is no current research that investigates the physiological demands of riding electrically powered skateboards. The aim of this study was to measure the energetic cost and muscular trends of riding a novel electrically powered skateboard engineered to emulate snowboarding on dry-land. While riding the skateboard, eight participants (aged 21-37 years, 1 female) donned a portable breath-by-breath gas analyzer to measure energy expenditure (mean = 12.5, …
A Comparison Of United States Marine Corps Physical Fitness Test And Combat Fitness Test Results, Marc Keefer, Mark Debeliso
A Comparison Of United States Marine Corps Physical Fitness Test And Combat Fitness Test Results, Marc Keefer, Mark Debeliso
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1741-1755, 2020. The United States Marines Corps (USMC) have installed a Physical Fitness Test (PFT) to measure physical fitness levels and a Combat Fitness Test (CFT) to assess a Marine’s functional fitness as it relates to the demands of combat operations. The PFT involves three events; pull-ups/push-ups (PU), two-minute abdominal crunches/sit-ups (AC), and a timed three-mile run (RUN). The CFT also involves three events; Movement to Contact (MTC), two-minute Ammunition Lift (AL), and Maneuver-Under-Fire (MANUF). It is of interest to determine if the PFT and CFT are both necessary. As such, the purpose of …
New Multisite Bioelectrical Impedance Device Compared To Hydrostatic Weighing And Skinfold Body Fat Methods, Andrew D. Wells, Bryanne N. Bellovary, Jonathan M. Houck, Jeremy B. Ducharme, Abdulaziz Abdulrahman A. Masoud, Ann L. Gibson, Christine M. Mermier
New Multisite Bioelectrical Impedance Device Compared To Hydrostatic Weighing And Skinfold Body Fat Methods, Andrew D. Wells, Bryanne N. Bellovary, Jonathan M. Houck, Jeremy B. Ducharme, Abdulaziz Abdulrahman A. Masoud, Ann L. Gibson, Christine M. Mermier
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1718-1728, 2020. The purpose of this study was to compare the Skulpt Chisel™ to seven-site skinfold (SKF) and hydrostatic weighing (HW) body fat percentage (%BF) estimates. Twenty-six participants (aged 24 ± 4 years; BMI 23.1 ± 3.5 kg∙m-2) were assessed. Significant differences in %BF estimates were found for all methodological pairings; p < 0.05. The SKF method underestimated %BF compared to HW (-2.52 ± 3.42 %BF). The Skulpt Chisel™ overestimated %BF compared to both HW (3.38 ± 6.10 %BF) and SKF (5.90 ± 5.26 %BF). Limits of agreement comparing HW to Skulpt Chisel™ indicated a difference between 95% confidence interval bounds (Upper bound: 5.84 %BF, Lower bound 0.92 %BF) and for HW to SKF (Upper bound: -1.14 %BF, Lower bound: -3.91 %BF). Regression analysis showed no significant bias for any methodological pairing; (p > 0.05). In conclusion, the Skulpt Chisel™ method should be used with caution when evaluating %BF of adults with similar demographics reported in this study.
Relationships Of Lower-Body Power Measures To Sprint And Change Of Direction Speed Among Ncaa Division Ii Women’S Lacrosse Players: An Exploratory Study, Emily Kulakowski, Robert G. Lockie, Quincy Johnson, Keston Lindsay, J. Jay Dawes
Relationships Of Lower-Body Power Measures To Sprint And Change Of Direction Speed Among Ncaa Division Ii Women’S Lacrosse Players: An Exploratory Study, Emily Kulakowski, Robert G. Lockie, Quincy Johnson, Keston Lindsay, J. Jay Dawes
International Journal of Exercise Science
International Journal of Exercise Science 13(6): 1667-1676, 2020. This study sought to determine if significant relationships exist between lower-body power measures to sprint and change of direction speed (CODS) in Division II collegiate women’s lacrosse athletes. Archived data for 17 NCAA Division II female lacrosse athletes was provided to the investigators for analysis. Jumping performance was assessed using a countermovement jump (CMJ), squat jump (SJ), and standing broad jump (SBJ). Sprint speed was measured at 10m and 30m, of a 30m sprint. CODS was evaluated using a T-Test (TT), a modified T-Test (MTT), and the 5-0-5 Agility Test (5-0-5). No …
The Generality Of Strength: Relationship Between Different Measures Of Muscular Strength In Older Women, João Pedro Nunes, Paolo M. Cunha, Melissa Antunes, Bruna D. V. Costa, Witalo Kassiano, Gabriel Kunevaliki, Alex S. Ribeiro, Edilson S. Cyrino
The Generality Of Strength: Relationship Between Different Measures Of Muscular Strength In Older Women, João Pedro Nunes, Paolo M. Cunha, Melissa Antunes, Bruna D. V. Costa, Witalo Kassiano, Gabriel Kunevaliki, Alex S. Ribeiro, Edilson S. Cyrino
International Journal of Exercise Science
International Journal of Exercise Science 13(3): 1638-1649, 2020. The aims of this study were: (i) to analyze the relationship between the performance of different measures of muscular strength, and (ii) to identify which measurements present a greater relationship with an overall strength score. Sixty older women (aged 69 ± 6 years) were submitted to muscular strength measurements from isotonic, isokinetic, and isometric tests. An overall-strength score was generated with z-scores of the values obtained in all tests. Interquartile intervals were created for each measure and the overall-strength score. Pearson’s r (0.463-0.951, p < 0.05) and Cronbach’s α (0.500-0.966) suggested that subjects had relatively similar strength performance compared to their peers in the different tests. Greater associations were observed between tests for similar tasks. In addition, strong-magnitude associations were revealed between all the tests and the overall-strength score (r = 0.710-0.806; α = 0.760-0.846). Factor …
What Factors Predict Upper Body Push To Pull Ratios In Professional Firefighters?, Justin J. Merrigan, Adam A. Burke, Marcie B. Fyock-Martin, Joel R. Martin
What Factors Predict Upper Body Push To Pull Ratios In Professional Firefighters?, Justin J. Merrigan, Adam A. Burke, Marcie B. Fyock-Martin, Joel R. Martin
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1605-1614, 2020. Shoulder joint injuries are common for professional firefighters. A potential cause of shoulder injury is an imbalance between anterior (push) and posterior (pull) shoulder joint musculature. Understanding what contributes to these imbalances may help to identify areas needing improvement. The purpose of this study was to investigate different push to pull (P2P) ratios and the relationships among common upper body fitness assessments, body composition, and push to pull (P2P) ratios in firefighters. Thirty-three professional firefighters completed the following testing protocol: one-repetition maximum (1RM) bench press, pull-up repetitions to failure, push-up repetitions to …
Comparison Of Multi-Frequency Bioelectrical Impedance And Dual-Energy X-Ray Absorptiometry To Assess Body Composition In College-Aged Adults, Rachel Tauber, Clayton Camic, Shuqi Zhang, Peter Chomentowski Iii
Comparison Of Multi-Frequency Bioelectrical Impedance And Dual-Energy X-Ray Absorptiometry To Assess Body Composition In College-Aged Adults, Rachel Tauber, Clayton Camic, Shuqi Zhang, Peter Chomentowski Iii
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1595-1604, 2020. The purpose of this study was to evaluate the validity of whole body percent fat (%BF) and segmental fat-free mass (FFM) using multi-frequency bioelectrical impedance analysis (MF-BIA) and dual-energy x-ray absorptiometry (DEXA) in college-aged adults. Sixty-two participants male (n = 32) and female (n = 30) completed MF-BIA and DEXA measurements following established pre-test guidelines. %BF and segmental FFM (right arm, left arm, trunk, right leg, and left leg) were collected and analyzed. The MF-BIA significantly (p < 0.05) underestimated %BF for all participants, females, and males compared to DEXA. …
Relationships Between Anthropometry And Maximal Strength In Male Classic Powerlifters, Pierre-Marc Ferland, Antoine Laurier, Alain-Steve Comtois
Relationships Between Anthropometry And Maximal Strength In Male Classic Powerlifters, Pierre-Marc Ferland, Antoine Laurier, Alain-Steve Comtois
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1512-1531, 2020. Several studies have determined the influence of physical characteristics on strength. The present quantified the relationships between anthropometry and maximal strength. Male classic powerlifters (n=59) were measured before a championship. Two-tailed Pearson correlation analysis was used. Powerlifters that presented higher relative maximal strength (RMS) in the squat and bench generally had higher body weight (BW), body mass index (BMI), torso circumference (C), waist C/height, torso C/height (r=0.26 to 0.49, p<0.05), and smaller lower leg length (L)/height and forearm L/torso C (r=-0.31 to -0.45, p<0.05) ratios. Powerlifters with a higher % of their deadlift on their total generally presented a smaller BW, BMI, body fat percentage (BF%), waist and torso C, trunk L, waist C/height, torso C/height, trunk L/height, waist C/hip C, thigh L/ lower leg L, trunk L/thigh L ratios (r=-0.26 to -0.49, p<0.05) and higher lower leg L, lower leg L/height, reach/height, and forearm L/torso C ratios (r=0.32 to 0.51, p<0.05). Stepwise regressions revealed that a bigger torso positively predicted absolute maximal strength (AMS) in the squat (β=0.41, p=0.04), the bench (β=0.77, p<0.01), the deadlift (β=0.88, p<0.01) and the total (β=0.89, p<0.01), that a higher torso C/height ratio positively predicted RMS in the squat(β=0.48, p<0.01), the bench (β=-0.87, p<0.01) and the total (β=0.66, p<0.01), and that reach/height positively predicted RMS in the deadlift (β=0.37, p<0.01) and it’s % on the total (β=0.31, p<0.01), but negatively predicted RMS in the bench (β=-0.25, p=0.02) and its % on the total (β=-0.24, p=0.04) As all of the stronger correlations came from AMS, powerlifters should focus on increasing AMS (weight lifted) instead of RMS (Wilks pts).
Verification Testing To Confirm Vo2max Attainment In Inactive Women With Obesity, Todd A. Astorino, Annie Bryers De La Rosa, Amy S. Clark, Jamie L. De Revere
Verification Testing To Confirm Vo2max Attainment In Inactive Women With Obesity, Todd A. Astorino, Annie Bryers De La Rosa, Amy S. Clark, Jamie L. De Revere
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1448-1458, 2020. Incidence of obesity is increasing worldwide which is deleterious to health due to its association with increased risk of cardiovascular disease, diabetes, and some cancers. Completion of regular physical activity in individuals with obesity increases maximal oxygen uptake (VO2max). However, whether individuals with obesity can exhibit ‘true’ VO2max is unresolved. This study examined efficacy of verification testing (VER) to identify ‘true’ VO2max in 17 inactive women with obesity (age, body fat, and VO2max = 37 ± 10 yr, 48.7 ± 3.5 %, and 19.4 …
Ischemic Preconditioning Does Not Improve Time Trial Performance In Recreational Runners, Alexander Hk Montoye, Clara J. Mitchinson, Olivia R. Townsend, Conner H. Nemmers, Caroline N. Serkaian, Brian C. Rider
Ischemic Preconditioning Does Not Improve Time Trial Performance In Recreational Runners, Alexander Hk Montoye, Clara J. Mitchinson, Olivia R. Townsend, Conner H. Nemmers, Caroline N. Serkaian, Brian C. Rider
International Journal of Exercise Science
International Journal of Exercise Science 13(6): 1402-1417, 2020. Some evidence indicates that ischemic preconditioning (IPC) may positively affect endurance exercise performance, but IPC’s effect on running performance is unclear. This study’s purpose was to examine the effect of IPC on running performance in recreational runners. Participants (n=12) completed IPC, a sham (SH) condition, and a leg elevation without blood restriction (LE) control condition on separate days (order randomized). For IPC, blood was restricted using blood pressure cuffs inflated to 220 mmHg at the thigh. For SH, the cuffs were inflated to only 20 mmHg. For LE, participants positioned their legs …
Validity And Reliability Of The Vo2 Master Pro For Oxygen Consumption And Ventilation Assessment, Alexander Hk Montoye, Joseph D. Vondrasek, James B. Hancock Ii
Validity And Reliability Of The Vo2 Master Pro For Oxygen Consumption And Ventilation Assessment, Alexander Hk Montoye, Joseph D. Vondrasek, James B. Hancock Ii
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1382-1401, 2020. This study assessed validity and reliability of the VO2 Master Pro portable metabolic analyzer for assessment of oxygen consumption (VO2) and minute ventilation (VE). In Protocol 1, eight male participants (height: 182.6 ± 5.8 cm, weight: 79.6 ± 8.3 kg, age: 41.0 ± 12.3 years) with previous competitive cycling experience completed an hour-long stationary cycling protocol twice, progressing from 100-300 Watts every 10 minutes while wearing the VO2 Master and a criterion measure (Parvomedics) for five minutes each, at each stage. In Protocol 2, 16 recreationally active male …
Differences Between Males And Females In Determining Exercise Intensity, Jozelyn Rascon, Elizabeth Trujillo, Francisco J. Morales-Acuna, Alvaro N. Gurovich
Differences Between Males And Females In Determining Exercise Intensity, Jozelyn Rascon, Elizabeth Trujillo, Francisco J. Morales-Acuna, Alvaro N. Gurovich
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1305-1316, 2020. Even though there are physiological differences between males and females, heart rate (HR), ratings of perceived exertion (RPE), power output (PO), oxygen consumption (VO2), and blood lactate (BL) levels have been used as measures of exercise intensity independently of sex. The purpose of this study was to determine differences between sexes in different exercise intensity models. Thirty (15 females) young, healthy individuals were scheduled for two testing visits 48-72 hours apart. During the first testing visit, a graded exercise test (GXT), with BL obtained at the end of each exercise …
Accuracy Of 5 Common Age-Predicted Maximal Heart Rate Equations, Daniel Shookster, Bryndan Lindsey, Nelson Cortes, Joel Martin
Accuracy Of 5 Common Age-Predicted Maximal Heart Rate Equations, Daniel Shookster, Bryndan Lindsey, Nelson Cortes, Joel Martin
International Journal of Exercise Science
International Journal of Exercise Science 13(7): 1242-1250, 2020. Age-predicted maximal heart rate (APMHR) is an essential measure for healthcare professionals in determining cardiovascular response to exercise testing, exertion, and prescription. Although multiple APMHR prediction equations have been validated for specific populations, the accuracy of each within a general population requires testing. We aimed to determine which APMHR equation (Fox, Gellish, Gulati, Tanaka, Arena, Astrand, Nes, Fairbarn) most accurately predicts max heart rate (HRmax) in a general population. HRmax from 99 graded treadmill exercise tests (GXT) were measured. GXTs ended upon volitional fatigue and were only included for …
Job-Specific Physical Fitness Changes Measured By The Work Sample Test Battery Within Deputy Sheriffs Between Training Academy And Their First Patrol Assignment, Robert G. Lockie, Rodney Pope, Olivia Saaroni, Joseph Dulla, J. Jay Dawes, Robin Marc Orr
Job-Specific Physical Fitness Changes Measured By The Work Sample Test Battery Within Deputy Sheriffs Between Training Academy And Their First Patrol Assignment, Robert G. Lockie, Rodney Pope, Olivia Saaroni, Joseph Dulla, J. Jay Dawes, Robin Marc Orr
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1262-1274, 2020. Deputy Sheriffs need to exhibit job-specific fitness throughout their occupational lifespan. This study evaluated job-specific fitness changes measured by the Work Sample Test Battery (WSTB) in deputy sheriffs from training academy to patrol school (refresher program completed before first patrol assignment). WSTB data for 34 deputy sheriffs (28 males, 6 females) was retrospectively analyzed. The WSTB included five tests: a 99-yard obstacle course (99OC); a 165-pound body drag (BD); 6-foot chain link fence (CLF) and solid wall (SW) climbs; and a 500-yard run (500R). WSTB task times measured at the end of …
Not All Hift Classes Are Created Equal: Evaluating Energy Expenditure And Relative Intensity Of A High-Intensity Functional Training Regimen, Jonathan D. Browne, Robert Carter, Anthony Robinson, Brigette Waldrup, Geoffrey Zhang, Erik Carrillo, Minhsang Dinh, Michael T. Arnold, Jonathan Hu, Eric V. Neufeld, Brett A. Dolezal
Not All Hift Classes Are Created Equal: Evaluating Energy Expenditure And Relative Intensity Of A High-Intensity Functional Training Regimen, Jonathan D. Browne, Robert Carter, Anthony Robinson, Brigette Waldrup, Geoffrey Zhang, Erik Carrillo, Minhsang Dinh, Michael T. Arnold, Jonathan Hu, Eric V. Neufeld, Brett A. Dolezal
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1206-1216, 2020. The demand for efficient and effective exercises has grown in concert with increased attention to fitness as a determinant of overall health. While past studies have examined the benefits traditional conditioning exercises, there have been few investigations of high intensity functional training (HIFT). The aim of this study was to measure the energy expenditure and relative intensity from participation in a signature, 35-minute group-based HIFT regimen. During the HIFT session, 13 volunteers (aged 23-59 years, 6 females) donned a portable breath-by-breath gas analyzer and a heart rate monitor. Mean caloric expenditure (528 …
Physiological Responses To Repeated Running Sprint Ability Tests: A Systematic Review, Jérémie Charron, Juan Emmanuel Veliz-Garcia, Philippe Roy, Pierre-Marc Ferland, Alain Steve Comtois
Physiological Responses To Repeated Running Sprint Ability Tests: A Systematic Review, Jérémie Charron, Juan Emmanuel Veliz-Garcia, Philippe Roy, Pierre-Marc Ferland, Alain Steve Comtois
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1190-1205, 2020. The purpose of this study was to review acute physiological responses induced by repeated running sprint ability (RRSA) tests that could serve as references for practitioners utilising repeated sprints as a performance measure with athletes. This research was conducted following the PRISMA methodology. The systematic search was conducted in November 2019 and yielded 26 different scientific articles. Only peer-reviewed full-text article were included as abstracts are too short to allow proper explanation of the RRSAT methodology that was employed. According to the present literature, practitioners should use the following assessments: the 6x40m …
The Relationship Between Aerobic Test Performance And Injuries In Police Recruits, Robin Marc Orr, Danielle Ferguson, Ben Schram, J. Jay Dawes, Robert G. Lockie, Rodney Pope
The Relationship Between Aerobic Test Performance And Injuries In Police Recruits, Robin Marc Orr, Danielle Ferguson, Ben Schram, J. Jay Dawes, Robert G. Lockie, Rodney Pope
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1052-1062, 2020. Lower levels of fitness are associated with an increased risk of injury in police recruits. The aim of this study was to determine the relationships between initial aerobic performance assessments and injury risk during police recruit training. Retrospective data from 219 police recruits undergoing training program at a state police training academy, including 20-m Multistage Fitness Test (MSFT) and 30-15 Intermittent Fitness Test (IFT) scores and injury data, were collected. Spearman’s correlation analysis revealed a significant negative correlation between levels of fitness (MSFT rs = - 0.292, p < 0.001: 30-15 IFT rs=- 0.315, p < 0.001) and rates of injury. Furthermore, a Pearson’s correlation showed a strong correlation between MSFT and the 30-15 IFT scores (r = 0.877, p < 0.001). Police recruits with lower fitness were at a higher risk of injury than those with higher fitness over the duration of a recruit training program. These findings indicate that aerobic performance assessments may be used by law enforcement agencies to estimate the relative risks of injury among cadets.
Anthropometrical And Physical Fitness Predictors Of Operational Military Test Performance In Air Force Personnel, Raí Tripolone Silva, Fabio A D Campos, Leandra Cristina Benetti Campos, Monica Y. Takito, Edison M. Miron, Idico L. Pellegrinotti, Emerson Franchini
Anthropometrical And Physical Fitness Predictors Of Operational Military Test Performance In Air Force Personnel, Raí Tripolone Silva, Fabio A D Campos, Leandra Cristina Benetti Campos, Monica Y. Takito, Edison M. Miron, Idico L. Pellegrinotti, Emerson Franchini
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1028-1040, 2020. The objective of this study was to verify the relationships between the anthropometrical and physical fitness parameters (measured by the Physical Conditioning Assessment (PCA) of the Aeronautics Command), with the operational performance in the simulated military task performance (SMTP) performed by the infantry military of a Brazilian Air Force (BAF) unit. These evaluations were performed on two distinct days, interspersed by 48h, with PCA on the first day and the SMTP in the second. The distribution of the dependent variable was not normal (Shapiro-Wilk test, p = 0.001). Data are presented as …
Analyzing The Training Load Demands, And Influence Of Sex And Body Mass, On The Tactical Task Of A Casualty Drag Via Surface Electromyography Wearable Technology, Robert G. Lockie, Matthew R. Moreno, Spencer Ducheny, Robin Marc Orr, J. Jay Dawes, Katherine Balfany
Analyzing The Training Load Demands, And Influence Of Sex And Body Mass, On The Tactical Task Of A Casualty Drag Via Surface Electromyography Wearable Technology, Robert G. Lockie, Matthew R. Moreno, Spencer Ducheny, Robin Marc Orr, J. Jay Dawes, Katherine Balfany
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 1012-1027, 2020. This study measured the training load (TL) demands associated with a military-specific casualty drag measured via surface electromyography (sEMG) wearable technology, and the influence of sex and body mass on these measures. Thirty-six college-aged participants (males = 25; females = 11) performed two trials of a 123-kg (91-kg dummy with 32-kg load) backwards casualty drag over 15 m. Time was recorded to calculate drag velocity, with the fastest trial analyzed. Prior to testing, participants were fitted with compression garments embedded with sensors to measure the vastus lateralis and medialis (quadriceps; QUAD), biceps …
Effects Of Combined Power Band Resistance Training On Sprint Speed, Agility, Vertical Jump Height And Strength In Collegiate Soccer Players, Edgar T. Katushabe, Mark Kramer
Effects Of Combined Power Band Resistance Training On Sprint Speed, Agility, Vertical Jump Height And Strength In Collegiate Soccer Players, Edgar T. Katushabe, Mark Kramer
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 950-963, 2020. Soccer involves explosive physical actions requiring strength, power, and agility for optimal performance. Such attributes may be trained several ways, of which power-band resistance training has received limited attention regarding the potential for performance improvement in soccer players. This study serves to determine the effect of power-band resistance training on 1-repetition maximal (1RM) strength, speed, standing vertical jump (SVJ) height, and agility of collegiate soccer players. Seventeen male players (age: 20.47 ± 1.85 years, height: 1.77 ± 0.08 m, mass: 70.49 ± 4.15 kg) were matched and randomly allocated into either a …
Preparation For An Half-Ironmantm Triathlon Amongst Amateur Athlete: Finishing Rate And Physiological Adaptation., Francois Lalonde, Sarah-Maude Martin, Vincent Gosselin Boucher, Marc Gosselin, Mélanie Roch, Alain Steve Comtois
Preparation For An Half-Ironmantm Triathlon Amongst Amateur Athlete: Finishing Rate And Physiological Adaptation., Francois Lalonde, Sarah-Maude Martin, Vincent Gosselin Boucher, Marc Gosselin, Mélanie Roch, Alain Steve Comtois
International Journal of Exercise Science
International Journal of Exercise Science 13(6): 766-777, 2020. Long distance triathlon has gained in popularity amongst the general population. Coaches establish training programs based upon their knowledge, personal experience and on current training principles. The goal was to observe the effect of a triathlon training program for a half Ironman event in neophyte amateur athletes. A specific triathlon training program was followed from February to June 2016 by a group preparing for their first half ironman. Out of the 32 participants (19 Males and 13 Females; mean age of 39 ± 9.9 years old; body weight of 72.7 ± 13.4 …
Determining Maod Using A Single Exhaustive Severe Intensity Test, Jose R. Valenzuela, Andrea E. Riojas, Brian K. Mcfarlin, Jakob L. Vingren, David W. Hill
Determining Maod Using A Single Exhaustive Severe Intensity Test, Jose R. Valenzuela, Andrea E. Riojas, Brian K. Mcfarlin, Jakob L. Vingren, David W. Hill
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 702-713, 2020. Maximal accumulated oxygen deficit (MAOD) provides a measure of anaerobic capacity. However, its measurement is a time-consuming process. The purpose of this study was to evaluate a measure of anaerobic capacity that avoids contentious assumptions and demands of the MAOD method. Twelve women and eight men volunteered for the study and completed cycle ergometer tests that resulted in exhaustion after ~4 min and ~8 min. In each test, anaerobic capacity was determined as (i) the MAOD and (ii) the sum of the phosphocreatine and glycolytic contributions (PCr+glycolysis). MAOD was determined …
The Validity And Reliability Of The Mi Band Wearable Device For Measuring Steps And Heart Rate, Chloe Paradiso, Francisco Colino, Sam Liu
The Validity And Reliability Of The Mi Band Wearable Device For Measuring Steps And Heart Rate, Chloe Paradiso, Francisco Colino, Sam Liu
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 689-701, 2020. The study objectives were to 1) evaluate the criterion validity and reliability of the Mi Band 2 wearable activity monitor to measure steps during a six-minute walk test (6MWT), a treadmill walking test at various speed (1.28 km/h, 1.92 km/h, and 2.88 km/h) and a stair climbing test; 2) assess the validity and reliability of the monitor to measure heart rate during rest and exercise. Fourteen participants (females: n = 8; mean age ± SD: 23 ± 4.2) completed the study. The mean body mass index was 22 ± 3.6. The majority …
The Increase In Oxygen Demand During Severe Intensity Exercise Must Be Included In Calculation Of Oxygen Deficit, Andrea E. Riojas, Jose R. Valenzuela, Brian K. Mcfarlin, Jakob L. Vingren, David W. Hill
The Increase In Oxygen Demand During Severe Intensity Exercise Must Be Included In Calculation Of Oxygen Deficit, Andrea E. Riojas, Jose R. Valenzuela, Brian K. Mcfarlin, Jakob L. Vingren, David W. Hill
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 645-655, 2020. A contentious element in the traditional method of calculating accumulated oxygen deficit (AOD) is the assumption that the oxygen demand remains constant throughout a bout of exercise. The purpose of this study was to investigate the appropriateness of this assumption. Twelve women and eight men volunteered for the study and completed cycle ergometer tests that resulted in exhaustion after ~4 min and ~8 min. In each test, AOD was calculated by subtracting accumulated oxygen uptake (in mL∙kg–1) from estimated total oxygen cost (in mL∙kg–1), which was estimating two …
Relationships Between Playing Time And Selected Nba Combine Test Performance In Division I Mid-Major Basketball Players, Robert G. Lockie, Aleksander Beljic, Spencer Ducheny, Joseph Kammerer, J. Jay Dawes
Relationships Between Playing Time And Selected Nba Combine Test Performance In Division I Mid-Major Basketball Players, Robert G. Lockie, Aleksander Beljic, Spencer Ducheny, Joseph Kammerer, J. Jay Dawes
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 583-596, 2020. There has been limited analyses of DI mid-major male basketball players, and no analyses of relationships between athletic abilities and playing time in this population. The purpose of this study was to (1) describe and compare backcourt and frontcourt players from one mid-major team and (2) determine if there were relationships between playing time (total minutes, total games played, minutes per game) and select tests from the NBA Combine (height, body mass, standing reach, and wingspan; countermovement [VJ] and approach [AppVJ vertical jump], lane agility drill, ¾ court sprint, and 83.91-kg bench …
Efficiency Of The Wilks And Ipf Formulas At Comparing Maximal Strength Regardless Of Bodyweight Through Analysis Of The Open Powerlifting Database, Pierre-Marc Ferland, Marc-Olivier Allard, Alain-Steve Comtois
Efficiency Of The Wilks And Ipf Formulas At Comparing Maximal Strength Regardless Of Bodyweight Through Analysis Of The Open Powerlifting Database, Pierre-Marc Ferland, Marc-Olivier Allard, Alain-Steve Comtois
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 567-582, 2020. The purpose of this study was to measure the efficiency of the Wilks and International Powerlifting Federation (IPF) Formulas at comparing powerlifting performance (total) between weight classes of the same sex (men and women) and division (classic and equipped) in order to determine the champion of champions. The Open Powerlifting database was downloaded (June 21st, 2019), filtered (Python) and analyzed (IBM SPSS). Single factor ANOVA revealed that the total (kg) was able to compare 3 out of the 98 weight class comparison possibilities (3.1%), the total ratio was able to compare 5 …
Comparison Of Post-Activation Potentiating Stimuli On Jump And Sprint Performance, Aaron D. Piper, Dustin P. Joubert, Eric J. Jones, Malcolm T. Whitehead
Comparison Of Post-Activation Potentiating Stimuli On Jump And Sprint Performance, Aaron D. Piper, Dustin P. Joubert, Eric J. Jones, Malcolm T. Whitehead
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 539-553, 2020. Post-activation potentiation (PAP) is a phenomenon characterized by improved muscle performance based on the previous contractile activity of the muscle. The purpose of this study was to determine the effect of different potentiating stimuli on jump and sprint performance in 13 resistance trained, college-aged men and women. After determining back squat 1 repetition max, subjects returned for testing on separate days to complete one of four interventions (dynamic resistance, weighted plyometric, isometric, or control) in a randomized order. A standardized warmup was performed, followed by a baseline countermovement jump (CMJ) and 20m …
Estimation Of Body Fat Percentage In Jockeys: Implications For A Weight Category Sport, Arthur Dunne, Giles Warrington, Gillian O'Loughlin, Siobhan O'Connor, Michael Harrison, Adrian Mcgoldrick, Jennifer Pugh, Sarahjane Cullen
Estimation Of Body Fat Percentage In Jockeys: Implications For A Weight Category Sport, Arthur Dunne, Giles Warrington, Gillian O'Loughlin, Siobhan O'Connor, Michael Harrison, Adrian Mcgoldrick, Jennifer Pugh, Sarahjane Cullen
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 511-525, 2020. The assessment of body composition in horse racing, a unique weight-restricted sport, provides an important health and performance indicator. The accuracy of skinfold prediction equations at estimating % body fat (% BF) was compared with dual-energy X-ray absorptiometry (DXA) data in a group of professional Irish jockeys (age 27.5 ± 7.7 years). Body composition was assessed in seventy-two male professional jockeys (flat n=35 and national hunt n=37) using standardised guidelines for skinfold thickness at 8 sites and DXA body fat assessment. Hydration status was assessed using urine specific gravity (Usg) to determine …
Relationships Among Metabolic-Risk, Body Fatness, And Muscular Fitness In Young Obese Latino Children, Justin J. Merrigan, Sina Gallo, Jennifer B. Fields, Robyn Mehlenbeck, Margaret T. Jones
Relationships Among Metabolic-Risk, Body Fatness, And Muscular Fitness In Young Obese Latino Children, Justin J. Merrigan, Sina Gallo, Jennifer B. Fields, Robyn Mehlenbeck, Margaret T. Jones
International Journal of Exercise Science
International Journal of Exercise Science 13(3): 488-500, 2020. Given the high prevalence of obesity in Latino children and potential health risks, the purpose of this study was to: 1) evaluate relationships among metabolic-risk, fitness, and body fatness; 2) determine sex differences in cardio-metabolic risk factors and fitness of obese children of Latino descent. Sixty children (boys, n= 39, 7.8 ± 1.5 years; girls, n= 21, 7.2 ± 1.5 years; body mass index, 97.8 ± 2.5thpercentile) completed assessments of height, weight, and body fat, prior to fasted blood draws and a battery of fitness tests. Cardio-metabolic markers …
Measuring Physical Activity Using Triaxial Wrist Worn Polar Activity Trackers: A Systematic Review, André Henriksen, Jonas Johansson, Gunnar Hartvigsen, Sameline Grimsgaard, Laila A. Hopstock
Measuring Physical Activity Using Triaxial Wrist Worn Polar Activity Trackers: A Systematic Review, André Henriksen, Jonas Johansson, Gunnar Hartvigsen, Sameline Grimsgaard, Laila A. Hopstock
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 438-454, 2020. Collecting objective physical activity data from research participants are increasingly done using consumer-based activity trackers. Several validation studies of Polar devices are conducted to date, but no systematic review of the current level of accuracy for these devices exist. The aim of this study is therefore to investigate the accuracy of current wrist-worn Polar devices that equips a triaxial accelerometer to measure physical activity. We conducted a systematic review by searching six databases for validation studies on modern Polar activity trackers. Studies were grouped and examined by tested outcome, i.e. energy expenditure, …