Digital Commons Network^™

Validation Of Polar Sense Monitor Over Tattooed Skin, Rodolfo I. Mejia

International Journal of Exercise Science: Conference Proceedings

The prevalence of tattoos has increased over the years, and, correspondingly, wearable technology, especially heart rate wearables. The signal from the heart rate wearables may be affected by the permanent ink on the skin because of previous validation studies excluding people with tattoos. PURPOSE: Examine the validity of heart rate monitors on people with arm tattoos. METHODS: 20 participants were recruited for this study. There were three conditions in the study that included heart rate measurements at rest, self-paced walking, and self-paced jogging. The Polar H10 and the Polar Verity Sense armband were used as the heart rate monitors. The …

Effects Of Acute Sleep Reduction And Aerobic Exercise On Metabolic Function In Healthy Adults, Eric Lessard, Gracie Dupuis, Jocelyn Kaveney, Braden Wilson, Grahm Mcginnis, Ryan Perkins

International Journal of Exercise Science: Conference Proceedings

INTRODUCTION: The number of adults who receive insufficient sleep is progressively increasing, impacting the established relationship between sleep and metabolic function. PURPOSE: The purpose of this study was to explore the effects of acute sleep reduction on metabolic variables at rest and during aerobic exercise. METHODS: Healthy, active adults (n=11; 26.4±5.4 yr; 45% female) were screened to ensure eligibility (i.e., meeting the CDC’s sleep recommendations of 7-9hr/night, apparently healthy, recreationally active, and non-smoking), characterize body composition via DXA and measure maximal cardiovascular capacity (VO2max). Utilizing a within subjects, repeated measures design, participants completed an initial 7d period of …

Interleukin-6 As A Mediator Of Circadian And Sex Differences In Exercise-Induced Stat3 And Autophagy Signaling, Srushti Wagh, Ariana Khzarjyan, Joshua Corpuz, Elias M. Malek, Charli Aguilar, Michael Dial, Paula Martinez, Graham Mcginnis

International Journal of Exercise Science: Conference Proceedings

Circadian rhythms are highly conserved across tissues and play an important role in regulating how the heart responds to physiological and pathological stress. Exercise is known to be cardioprotective, yet the impact of exercise timing on molecular signaling is still being explored. Interleukin-6 (IL-6) is an exercise-induced cytokine which has been shown to be important to cardioprotection and metabolism. It is currently unknown how exercise timing modulates the IL-6 signaling pathway in the heart.

PURPOSE: To investigate how time-of-day and IL-6 influence exercise-induced activation of STAT3 and its downstream signaling pathways in male and female mouse hearts.

METHODS: Wild-type and …

Unlocking The Potential Of Citrulline Malate: A Pilot Study, Fabiola E. Bejarano, Elisa L. Milkie, Parker Andersen, Jenevieve L. Roper Facsm

International Journal of Exercise Science: Conference Proceedings

Citrulline malate (CM) is an ergogenic aid hypothesized to improve exercise performance by promoting nitric oxide (NO) production resulting in increased vasodilation, blood flow, and oxygen and nutrient delivery to working muscles. It is also thought to increase the synthesis of ATP and aerobic efficiency via malate and the TCA cycle. Prior research demonstrates improvements in upper and lower body submaximal resistance training exercise performance in females; however, limited research exists on the effects of CM supplementation on submaximal aerobic exercise performance in females. PURPOSE: Determine the effects of acute CM supplementation on submaximal time-trial (TT) performance in females. …

Use Of A Smartphone App Influences Diet Quality Among College Students., Alexis Arle, Mandy Korpusik, Delaram Yazdansepas, Gabrielle Besio, Samantha Chuakay Lim, Cameron Sumaquial, Hawley C. Almstedt

International Journal of Exercise Science: Conference Proceedings

Diet quality can protect or increase risk for noncommunicable diseases (NCDs). Diets rich in carotenoids are linked to reduced risk of NCDs. Dietary carotenoids can be measured in the skin and can serve as a biomarker of fruit and vegetable intake. PURPOSE: The purpose of this study was to investigate whether use of the In2Eat app improved diet quality among college students. METHODS: We administered a baseline survey including the Diet Quality Questionnaire (DQQ). Participants were also tested for skin carotenoid levels using a spectrophotometer (Konica Minolta 600D) as an indicator of diet quality. Participants were asked to use the …

Validity And Reliability Of Wrist-Worn Wearable Body Composition Estimation, Setareh Zarei, Rodolfo Mejia, James Navalta

International Journal of Exercise Science: Conference Proceedings

Usage of wearable technology is increasing in popularity every day. Samsung is a popular brand that manufactures wearable fitness trackers capable of measuring body composition (Galaxy Watch7). Because body composition is a common way to determine body fat percentage (FM %) and fat mass (FM), the validity and reliability of wearables to provide accurate measures (body fat percentage and fat mass) during body composition is important. PURPOSE: This study aimed to analyze and assess the validity and reliability of body fat percentage and fat mass from the Samsung Galaxy watch7 vs. DXA scan and Bioelectrical Impedance Analysis (BIA). METHODS …

Subject Specific Autoencoders Reveal Terminal Stage Gait Variability In The Bruce Protocol, Ali Boolani, Azarang Asadi

International Journal of Exercise Science: Conference Proceedings

General fatigue impacts both physiological and neuromuscular systems, leading to mechanical consequences in the musculoskeletal system that manifest as alterations and variability in gait patterns. The Bruce Protocol ends at maximal exertion, providing a window to study fatigue-linked gait deviations. Purpose: To investigate whether step-by-step gait during the terminal stages of the Bruce Protocol departs from a subject’s normal pattern. Methods: 24 Division I athletes completed the Bruce Protocol while spatiotemporal gait parameters were captured with OptoGait. Features included normalized parameters plus within- and between-limb variability metrics. Redundant features were removed using hierarchical clustering. A deep autoencoder was trained on …

The Mode Of Physical Activity Does Not Affect Post-Prandial Blood Glucose Attenuation When Metabolically Matched, Tanathia Camacho, Adam E. Mohan, Thinh Le Mr., Levi Vazquez, Douglas J. Oberlin Ii

International Journal of Exercise Science: Conference Proceedings

PURPOSE:

Postprandial hyperglycemia contributes to the development of chronic diseases such as diabetes mellitus. While post-meal physical activity (PA) is known to reduce blood glucose (BG), it remains unclear whether certain modes of PA are more effective than others when matched for energy expenditure. This study aims to compare the BG-attenuating effects of two energetically equivalent postprandial modes of PA.

METHODS:

Eleven healthy adults completed three randomized sessions, consisting of a 75g oral glucose challenge and either walking, stepping, or rest. Each session’s PA lasted 15 minutes and occurred between 45–60 minutes post-ingestion, when BG typically peaks. During PA both …

Effect Of Short-Term Beetroot Supplementation On High-Intensity Cycling Sprint Performance In Recreationally Active Adults, Lia M. Karas, Adam M. Gonzalez, David Wang, Jamie J. Ghigiarelli, Katie M. Sell

International Journal of Exercise Science: Conference Proceedings

Nitric Oxide (NO) has a plethora of physiological benefits including vascular smooth muscle relaxation and vasodilation. Beetroot (BR) is a rich source of dietary nitrate which serves as a precursor for enhancing the bioavailability of circulating NO levels. BR has been used by athletes as a supplement to potentially enhance blood flow and exercise performance. Understanding the performance effects of BR supplementation is important for determining its practical value as an ergogenic aid for athletes and active individuals.PURPOSE: This study aimed to investigate whether BR supplementation enhances exercise performance during a cycling sprint protocol. METHODS: Ten recreationally active males …

Age And Gender Differences In Half Marathon And Marathon Performance: Predicted Vs. Official Finish Times, Leno Benny, Bridget Mcfadden, Gregory Klimaytis

International Journal of Exercise Science: Conference Proceedings

GNYACSM Original Research Abstract

Age and Gender Differences in Half Marathon and Marathon Performance: Predicted vs. Official Finish Times

LENO BENNY, GREGORY KLIMAYTIS, BRIDGET A. MCFADDEN

Human Performance Laboratory; Department of Family, Nutrition, and Exercise Science; Queens College, City University of New York; Flushing, NEW YORK

Category: Graduate

Advisor / Mentor: McFadden, Bridget ([email protected])

ABSTRACT

Participation in marathons (26.2 mi) and half marathons (13.1 mi) has grown for men (M) and women (W) in all age categories. Recently, some races have included a non-binary (NB) gender category. Therefore, research assessing gender and age differences in race performance is warranted. Predicted …

Performance And Self-Kindness In Dynamic Balance: Mindfulness As The Bridge Between Mental Toughness And Self-Compassion, Gustavo F. Saldo, Tomas Chapman-Lopez, Leroy K. Bolden, Olivia Russell, Jeffrey Forsee, Andrew R. Gallucci, Andreas Stamatis

International Journal of Exercise Science: Conference Proceedings

Balancing performance demands with self-care is essential for maintaining psychological health. Mental toughness (MT) and self-compassion (SC) are often framed as opposing constructs; however, athlete data suggest mindfulness (MF) may integrate them. Whether this extends to non-athlete adults is unclear. PURPOSE: To test whether MF mediates the MT–SC relationship in a non-athlete population. METHODS: Eighty-four adults (M_age = 44.4, SD = 14.9; 57.1% male) were recruited from a community outreach program. Missing data were addressed with 20 item-level imputations. Measures included the Mental Toughness Index (α = .89, ω = .90) and the Self-Compassion Scale excluding MF …

Accuracy Of The Garmin Instinct For Heart Rate Monitoring During Forearm Exercise With And Without Blood Flow Restriction, Danilo Dullas, Clifford Sanders, Yahtziri Martinez, Tevin Perez, Alana Tucker, Amelia Wolfe, Juni Timmins, Catalina M. Kerwin, Kynlee Sperry, Cannon Jones, Heather Zent, Sam Brinkerhoff, Setareh Zarei, Jeff Guzman, Rodolfo I. Mejia, Nathaniel Bodell, James W. Navalta, Merrill Funk, Jeffrey Cowley, Marcus M. Lawrence

International Journal of Exercise Science: Conference Proceedings

Wearable devices are widely used to monitor heart rate (HR) during exercise, but their accuracy under blood flow restriction (BFR) remains uncertain. Because BFR is increasingly applied in rehabilitation and strength training, accurate HR monitoring is essential for both safety and prescription. The PURPOSE of this study was to evaluate the reliability of the Garmin Instinct smartwatch for measuring HR during forearm exercise with and without BFR, compared to a chest-strap criterion device. METHODS: Twenty-three healthy adults (9 females, 14 males; mean age = 24.74 ± 8.19 years) participated in a repeated-measures design. After providing consent and being fitted with …

Validity Of The Polar Verity Sense In Measuring Heart Rate During A Hand Grip Assessment With Blood Flow Restriction, Jeff Guzman, James W. Navalta, Marcus M. Lawrence, Nathaniel Bodell, Jeffrey Cowley, Setareh Zarei, Rodolfo I. Mejia, Catalina M. Kerwin, Kynlee Sperry, Juni Timmins, Cannon Jones, Sam Brinkerhoff, Danilo Dullas, Clifford Sanders, Yahtziri Martinez, Tevin Perez, Alana Tucker, Amelia Wolfe, Merrill Funk

International Journal of Exercise Science: Conference Proceedings

Blood flow restriction (BFR) training has acquired significant attention in rehabilitation and performance sciences. Polar is a popular heart rate (HR) device manufacturer, Polar Electro OY. PURPOSE: The purpose of this study was to investigate the validity of HR from the Polar Verity Sense biceps band vs the Polar H10 chest strap during a hand grip assessment with blood flow restriction. METHODS: Twenty-three adults (9 females, 14 males, Identified otherwise n = 0; age=24.74±8.19 years, height = 172 cm (SD =9) Mass = 79kg (SD= 18.5) were recruited via convenience sampling. Participants were asked to do a warm-up including 5-min …

Can Motivation And Self-Efficacy Predict A Law Enforcement Officer’S General And Job-Specific Fitness?, Robert G. Lockie, Maria M. Beitzel, Tyler Campana, Jennifer Kramer, Robin (Rob) Marc Orr, J. Jay Dawes, Joseph Dulla

International Journal of Exercise Science

International Journal of Exercise Science 18(8): 1393-1409, 2025. https://doi.org/10.70252/GEHB5425 Sedentary behaviors contribute to law enforcement officer fitness declines over a career. An officer’s motivation (desire to exercise) and self-efficacy (belief in ability to exercise) could affect whether they exercise and predict resulting fitness. Data from 60 officers (48 men, 12 women) were analyzed. Motivation (amotivation, external, introjected, identified, integrated, and intrinsic regulation) was measured via the Behavioral Regulation in Exercise Questionnaire. A 6-item questionnaire assessed coping (confidence in exercising under challenging conditions) and scheduling (confidence in scheduling exercise) self-efficacy. General fitness variables included sit-and-reach, grip strength, 60-s push-ups, 60-s sit-ups, …

Acute Physiological Responses To Rope Climbing Ergometer High-Intensity Interval Training In Males And Females, Hannah K. Eberhardt, Matthew F. Brisebois, Matthew A. Yeomans, Patrick G. Saracino

International Journal of Exercise Science

International Journal of Exercise Science 18(3): 1355-1366, 2025. https://doi.org/10.70252/EAFV3707 This study aimed to assess the acute physiological responses to a single bout of rope climbing high-intensity interval training (RC-HIIT) and compare the responses between sexes as no data currently exists on this training modality. Following an overnight fast, body composition was assessed, and resting measurements were recorded. Participants then completed an exercise protocol consisting of 10 rounds of maximal effort rope climbing using a 30:60 second work:rest ratio. Gas analysis and heart rate (HR) were recorded continuously. Blood lactate (BLa) was measured following the final work interval. Participants remained seated …

Effects Of A Personalized Fitness Program Provided By Undergraduate Exercise Science Students On Attitudes Toward Exercise, Mental Health, And Quality Of Life, Kris M. Cleveland, Jacob Fike, Scott Peterson

International Journal of Exercise Science

International Journal of Exercise Science 18(4): 1334-1343, 2025. https://doi.org/10.70252/IYNS6043 Personalized fitness training is designed to improve physical health and fitness, but may also promote mental health and well-being. The purpose of this study was to determine whether there are positive psychological outcomes for clients participating in a community-based personalized fitness program led by undergraduate Exercise Science students. A total of 44 participants completed a battery of psychological scales both before and after participation in a 12-week university-sponsored personalized fitness training program. Psychological measures included the Exercise Attitudes Scale, Self-Efficacy Scale for Exercise, Short Warwick-Edinburgh Mental Well-Being Scale, Health Status Questionnaire, …

Two-Year Skeletal Adaptations In Development And National Level Female Figure Skaters, Chelsea Wong, Leigh Gabel, Erik Groves, Kelly Quipp, Steven Boyd, Lauren Burt

International Journal of Exercise Science

International Journal of Exercise Science 18(3): 1297-1309, 2025. https://doi.org/10.70252/ZSKN7069 Figure skaters typically have higher bone mineral density (BMD) than the general population. However, the current literature is limited to cross-sectional studies. The objective of this study was to determine two-year changes in volumetric BMD, bone microarchitecture, and estimated bone strength in elite national and development level Canadian figure skaters. Eleven female figure skaters aged 14+ years were recruited for this longitudinal study. Measurements occurred annually. High-resolution peripheral quantitative computed tomography (HR-pQCT) scans of the radius and tibia underwent three-dimensional image registration. Total (Tt), cortical (Ct) and trabecular (Tb) volumetric BMD …

The Effects Of Combined Fasting And Exercise On Inflammatory Cytokine Concentrations In Healthy Adults: A Randomized Crossover Study, Landon S. Deru, Austin F. Duersch, Spencer C. Cleverly, Hunter D. Chamberlain, Elizabeth Z. Gipson, Parker G. Graves, Cameron G. Jacobsen, Larry A. Tucker, Bruce W. Bailey

International Journal of Exercise Science

International Journal of Exercise Science 18(6): 1252-1268, 2025. https://doi.org/10.70252/APHT9483 The object was to assess the effects of adding exercise to a 36-hour fast on the inflammatory cytokines IL-6, TNF-α, and MCP-1. The study was a randomized crossover design with counterbalanced conditions in community members living near a single academic institution. Participants included twenty healthy adults (11 male). The intervention consisted of two 36-h water-only fasts, one of which was initiated with a bout of treadmill exercise. Venous blood was taken at baseline, 12-h, 24-h, and 36-h of fasting. Area under the curve and timepoint analyses were computed. The area under …

Incidence And Risk Factors Of Metabolic Syndrome In Track And Field Throwing Athletes, Taylor Browning, Samuel Headley, Elizabeth M. Mullin, Margaret T. Jones, Andrew R. Jagim, Jennifer Fields

International Journal of Exercise Science

International Journal of Exercise Science 18(6): 1199-1211, 2025. https://doi.org/10.70252/HOKT7948 Track and field (T&F) throwers are a prominent subgroup of athletes that may be at risk for the development of Metabolic Syndrome (MetSyn) and other cardiometabolic disease conditions. However, limited research exists examining the prevalence of MetSyn in these athletes. Therefore, the purpose of this study was to examine the incidence of MetSyn and associated risk factors in collegiate throwers. Collegiate Division I men (n=17) and women (n=4) T&F throwers participated in a single day of lab assessments, which included anthropometrics, body composition, blood pressure, a venous blood draw, and aerobic …

Upper Extremity Asymmetries In Collegiate Tennis Players Compared To An Athletic Control Of Runners, Elizabeth A. Cafferty, Dale R. Wagner, Brennan J. Thompson

International Journal of Exercise Science

International Journal of Exercise Science 18(3): 1151-1165, 2025. https://doi.org/10.70252/MDRK9289 Previous research on limb asymmetries of athletes participating in dominant-sided sports lacks an athletic control group. This study aimed to determine the magnitude of upper limb asymmetries in dominant-sided athletes (tennis players) compared to nondominant-sided athletes (cross-country runners). Men and women university athletes (10 tennis, 11 cross-country) participated. Dual-energy x-ray absorptiometry (DXA) was used to measure bone mineral content (BMC), bone mineral density (BMD), and lean mass (LM) of the whole body, upper extremities, and forearms. Circumference measurements were taken at mid-biceps and widest part of the forearms. Bony breadth of …

An Example Analysis For A Gender-Inclusive Approach In Sport And Exercise Science Research Using Fitbit Outcomes From The All Of Us Research Program Dataset, James W. Navalta, Dustin W. Davis, Jafra D. Thomas, Whitley J. Stone

International Journal of Exercise Science

International Journal of Exercise Science 18(1): 1133-1141, 2025. https://doi.org/10.70252/HRNQ4501 Prevalence studies with wearable devices are used to understand disparities in health-related physical activity behaviors and whether interventions are efficacious. However, studies have been limited to a binary definition of sex. This example analysis aimed to demonstrate how researchers can investigate differences in data beyond the sex-gender binary. Using a cross-sectional analysis of the All of Us Research Program dataset, participants' self-identified gender was categorized into Cisgender Female (n = 10,401), Additional Options (n = 27), Non-binary (n = 84), Transgender (n = 17), and Cisgender Male …

Ethnic Differences In Health-Related Quality Of Life, Physical Activity, And Health Locus Of Control, Kimberly Feiler

International Journal of Exercise Science

International Journal of Exercise Science 18(8): 1072-1085, 2025. https://doi.org/10.70252/STUM6367 This research aimed to better understand the differences in health-related quality of life (HRQoL: general health, physical functioning), physical activity (PA), and health locus of control (HLOC: internal, external-chance, external-powerful others, God) among various ethnic groups. The study’s sample included 185 individuals, 22 - 81 years of age, who were attending or employed by one of three religiously-affiliated higher education institutions during the 2020-2021 academic year. Participants voluntarily answered questions about their ethnic identity, HRQoL, PA level, and HLOC. To analyze the interaction of HRQoL, PA, and HLOC, a multiple regression …

Peer-Led Multicomponent Lifestyle Intervention Improves Function And Physical Activity In Older Veterans With Dysmobility, B Friedman, J Giffuni, E Dennis, R Patel, J Rekant, O Addison

International Journal of Exercise Science: Conference Proceedings

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Effect Of Dietary Intake On Exercise Performance In Collegiate Rowers, J Garay, S Vettamvelil, M Voss

International Journal of Exercise Science: Conference Proceedings

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Age-Varying Associations Between Disrupted Circadian Rest-Activity Rhythms And Frailty Among 7,236 U.S. Adults, J Kim, J Kenyon, J Geller, E Park, J Lee, D Kirkman, L Sargent, Y Kim

International Journal of Exercise Science: Conference Proceedings

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The Impact Of A Baseball Season On Body Composition In Ncaa Division Ii Baseball Pitchers, C Saker, B Snyder, B Finn, S Davis Facsm, Darrin Lenhart, S Muford

International Journal of Exercise Science: Conference Proceedings

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Agreement Between Self-Reported And Accelerometer Derived Sleep Durations, M Alidadi, T Barreira, K Harmon, Y Moon, M Armstrong

International Journal of Exercise Science: Conference Proceedings

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Low Energy Availability Prevalence, Dietary Habits, And Sleep In Female Army Rotc Cadets, Hannah K. Eberhardt, Brandon D. Willingham, Matthew F. Brisebois, Patrick G. Saracino

International Journal of Exercise Science

International Journal of Exercise Science 18(6): 1030-1046, 2025. Low energy availability (LEA) results in numerous health and performance decrements. While a high prevalence of LEA and sleep disturbance has been observed in male Army Reserve Officers’ Training Corps (ROTC) cadets, no data exists in females. This study aimed to determine LEA prevalence, dietary habits, and sleep quantity and quality in female U.S. ROTC cadets. Following an overnight fast, ten cadets (22±4 yrs, 166.0±6.1 cm, 67.1±9.1 kg, 26.1±6.2% body fat, 49.2±4.8 kg fat-free mass (FFM)) had their body composition and resting metabolic rate measured. Validated questionnaires assessed LEA symptoms and sleep. …

Editorial: A Step-By-Step Statistical Decision Framework For A Gender-Inclusive Approach In Sport And Exercise Science Research, James W. Navalta, Dustin W. Davis, Jafra D. Thomas, Whitley J. Stone

International Journal of Exercise Science

International Journal of Exercise Science 18(1): 1010-1029, 2025. The conflation of sex and gender in sport and exercise science research has led to gaps in representation and understanding of gender-inclusive outcomes. This invited editorial presents a framework to guide researchers in conducting statistical analyses that account for multiple gender identities beyond the traditional binary classification. The invited editorial guides deliberation on whether to test for sex or gender differences in sport or exercise science research. It prompts investigators to answer the question, “Is there a valid, literature-supported rationale for investigating sex or gender differences?” If “yes”, we propose approaches that …

Positive Changes In Functional Capacity, Muscle Strength And Body Composition After Short Time Of Resistance Training Periodization In Older Women: A Quasi-Experimental Study, Ericles Vieira

International Journal of Exercise Science

International Journal of Exercise Science 18(7): 949-970, 2025. We investigated the effects of a new approach with mixed session periodization resistance training (MSP) on functional performance, muscular strength, and body composition in older women. Twenty-one participants were tested before and after the intervention (10 weeks) and were allocated for convenience into two groups according to their available time; our schedule made two classes available, one at 6 a.m. (MSP), and one at 7 a.m. (active group-control). Results were analyzed through a mixed-model analysis with repeated measures. There was a group vs. time interaction for timed up and go (p < 0.001, η_{p …}