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Full-Text Articles in Physiology
Maximal Running Speed And Critical Speed Are Positively Related To Phase Angle In Healthy Young Adults, Trevor Short, Paulette Yamada
Maximal Running Speed And Critical Speed Are Positively Related To Phase Angle In Healthy Young Adults, Trevor Short, Paulette Yamada
International Journal of Exercise Science
International Journal of Exercise Science 17(4): 405-417, 2024. Phase Angle (PhA), derived from bioelectrical impedance analysis, is a measurement of cellular resistance to electrical current and a non-invasive tool to monitor neuromuscular performance. The relationship between PhA and components of athletic performance is not fully understood. The purpose of this study was to determine if maximal running speed, critical speed (CS), and/or D prime (D’) derived from a 3-minute all-out-test (3MAOT) correlates to PhA, reactance (Xc), or resistance (R). Sixty-one (male n=35, female n=26) healthy young adults (23.4±3.9 years) completed bioelectrical impedance analysis (Inbody770) and a 3MAOT. The correlations between …
Longitudinal Sport Science Implementation In American Collegiate Men’S Basketball, Jason Stone
Longitudinal Sport Science Implementation In American Collegiate Men’S Basketball, Jason Stone
Graduate Theses, Dissertations, and Problem Reports
The expanding opportunities to implement sport science frameworks in elite-level basketball environments coincide with the sport’s increasing global prominence. Concomitant to these opportunities is the continual growth of the sport technology market (e.g., wearables, force plates) and computational power (e.g., data management tools, coding capabilities), which yields solutions and challenges for both athletes and practitioners. Due to the rapid influx of new sport technologies in high performance environments, particularly American Collegiate Men’s Basketball, more formal and ecologically valid research on how to effectively utilize data derived from them, particularly over long periods of time (i.e., multiple seasons) is needed. To …
Assessment Of Relationships Between External Load Metrics And Game Performance In Women’S Lacrosse, Libby Bynum, Ronald Snarr Jr., Bradley Myers 8931361, Jennifer A. Bunn
Assessment Of Relationships Between External Load Metrics And Game Performance In Women’S Lacrosse, Libby Bynum, Ronald Snarr Jr., Bradley Myers 8931361, Jennifer A. Bunn
International Journal of Exercise Science
International Journal of Exercise Science 15(6): 488-497, 2022. The purpose of this study was to analyse the relationship between external load metrics with game performance for Division I collegiate female lacrosse. Data were collected using microtechnology during 26 games with 13 athletes (attackers n = 5, midfielders n = 8). External load variables included: total distance (TD), distance rate (DR), high-intensity (HI) distance, speed, HI sprints, accelerations, decelerations, metabolic equivalent distance (MED), and sprints. For attackers, goals, points, shots, and shots on goal (SOG) had low, positive associations with TD (r = 0.32 to 0.42) and MED (r …
Evaluating The Clinical Utility Of Daily Heart Rate Variability Assessment For Classifying Meaningful Change In Testosterone-To-Cortisol Ratio: A Preliminary Study, Justin A. Deblauw, Derek A. Crawford, Brady K. Kurtz, Nicholas B. Drake, Katie M. Heinrich
Evaluating The Clinical Utility Of Daily Heart Rate Variability Assessment For Classifying Meaningful Change In Testosterone-To-Cortisol Ratio: A Preliminary Study, Justin A. Deblauw, Derek A. Crawford, Brady K. Kurtz, Nicholas B. Drake, Katie M. Heinrich
International Journal of Exercise Science
International Journal of Exercise Science 14(3): 260-273, 2021. The study purpose was to determine the relationship of resting heart rate variability (HRV) and testosterone to cortisol (T:C) ratio, along with the diagnostic ability of HRV to assess changes in T:C ratio during a 9-week high-intensity functional training intervention. Eight recreationally-active men (n = 4, age 24.25 ± 1.75 yrs, height 181.25 ± 3.86 cm, weight 79.68 ± 11.66 kg) and women (n = 4, age 26 ± 3.6 yrs, height 164.25 ± 3.3, weight 73.4 ± 8.42) completed daily HRV measurements (HRVdaily) using photoplethysmography via a commercially-available smartphone …
Internal Training Load Measures During A Competitive Season In Collegiate Women Lacrosse Athletes, Jennifer Fields, Michael Esco, Justin Merrigan, Jason White, Margaret T. Jones
Internal Training Load Measures During A Competitive Season In Collegiate Women Lacrosse Athletes, Jennifer Fields, Michael Esco, Justin Merrigan, Jason White, Margaret T. Jones
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 778-788, 2020. Monitoring internal load provides useful and non-invasive markers of training stress and adaptation. However, the relationship between internal load measures across a competitive window remains inconclusive and limited. The purpose of this study was to report various internal load measures, as well as their relationship, across a season in Division I women lacrosse athletes (n = 20). Ultra-short natural logarithm of the root mean square of successive differences (lnRMSSD), salivary testosterone, cortisol, the testosterone:cortisol ratio, and self-reported measures of fatigue and recovery were collected weekly for 13 weeks. Means ± SD …
Accuracy Assessment Of A Gps Device For Maximum Sprint Speed, Kathryn Alphin, Olivia Sisson, Brynn L. Hudgins, Catherine D. Noonan, Jennifer A. Bunn
Accuracy Assessment Of A Gps Device For Maximum Sprint Speed, Kathryn Alphin, Olivia Sisson, Brynn L. Hudgins, Catherine D. Noonan, Jennifer A. Bunn
International Journal of Exercise Science
International Journal of Exercise Science 13(4): 273-280, 2020. Global positioning system (GPS) technology can capture maximum sprint speed (MSS) using fewer resources than electronic timing gates (ETG). Yet,errors with GPS technology are typically 1.01 km∙hr-1for instantaneous velocity, potentially limiting GPS accuracy. The purpose of this study was to compare MSS values obtained from GPS technology to those obtained from ETG. The MSS of 24 female athletes was determined using two tests that both began with a 20-m fly-in followed by: 1) 80-m maximal sprint with ETG placed at the start line, 30 m, 60 m, and 80 …
Phase- Specific Changes In Rate Of Force Development And Muscle Morphology Throughout A Block Periodized Training Cycle In Weightlifters, Dylan G. Suarez, Satoshi Mizuguchi, William Guy Hornsby, Aaron J. Cunanan, Donald J. Marsh, Michael H. Stone
Phase- Specific Changes In Rate Of Force Development And Muscle Morphology Throughout A Block Periodized Training Cycle In Weightlifters, Dylan G. Suarez, Satoshi Mizuguchi, William Guy Hornsby, Aaron J. Cunanan, Donald J. Marsh, Michael H. Stone
ETSU Faculty Works
The purpose of this study was to investigate the kinetic and morphological adaptations that occur during distinct phases of a block periodized training cycle in weightlifters. Athlete monitoring data from nine experienced collegiate weightlifters was used. Isometric mid-thigh pull (IMTP) and ultrasonography (US) results were compared to examine the effects of three specific phases of a training cycle leading up to a competition. During the high volume strength-endurance phase (SE) small depressions in rate of force development (RFD) but statistically significant (p ≤ 0.05) increases in vastus lateralis cross-sectional area (CSA), and body mass (BM) were observed. The lower volume …
Cell Free Dna As A Marker Of Training Status In Weightlifters, Jeremy A. Gentles, William G. Hornsby, Christine L. Coniglio, Andy R. Dotterweich, Jon A. Miller, Charles A. Stuart, Michael H. Stone
Cell Free Dna As A Marker Of Training Status In Weightlifters, Jeremy A. Gentles, William G. Hornsby, Christine L. Coniglio, Andy R. Dotterweich, Jon A. Miller, Charles A. Stuart, Michael H. Stone
Jeremy A. Gentles
The purpose of this investigation was to elucidate the changes in cf-DNA as it relates to fluctuations in resistance training workloads and intensities. The relationship between cell free DNA (cf-DNA), C-reactive protein (CRP), creatine kinase (CK), testosterone (T), cortisol (C), testosterone-cortisol ratio (T:C), body mass and body composition were also examined. Eight weightlifters (5 males and 3 females, age = 25 ± 3.5 yr, body mass = 88.3 ± 22.7 kg, height = 173.8 ±8.4 cm) volunteered to participate in this study. Venous blood samples, body mass and body composition were taken six times, each corresponding to the end of …
Maximum Strength, Rate Of Force Development, Jump Height, And Peak Power Alterations In Weightlifters Across Five Months Of Training, W. Guy Hornsby, Jeremy A. Gentles, Christopher J. Macdonald, Satoshi Mizuguchi, Michael W. Ramsey, Michael H. Stone
Maximum Strength, Rate Of Force Development, Jump Height, And Peak Power Alterations In Weightlifters Across Five Months Of Training, W. Guy Hornsby, Jeremy A. Gentles, Christopher J. Macdonald, Satoshi Mizuguchi, Michael W. Ramsey, Michael H. Stone
Michael H. Stone
The purpose of this monitoring study was to investigate how alterations in training affect changes in force-related characteristics and weightlifting performance. Subjects: Seven competitive weightlifters participated in the study. Methods: The weightlifters performed a block style periodized plan across 20 weeks. Force plate data from the isometric mid-thigh pull and static jumps with 0 kg, 11 kg, and 20 kg were collected near the end of each training block (weeks 1, 6, 10, 13, 17, and 20). Weightlifting performance was measured at weeks 0, 7, 11, and 20. Results: Very strong correlations were noted between weightlifting performances and isometric rate …
Cell Free Dna As A Marker Of Training Status In Weightlifters, Jeremy A. Gentles, William G. Hornsby, Christine L. Coniglio, Andy R. Dotterweich, Jon A. Miller, Charles A. Stuart, Michael H. Stone
Cell Free Dna As A Marker Of Training Status In Weightlifters, Jeremy A. Gentles, William G. Hornsby, Christine L. Coniglio, Andy R. Dotterweich, Jon A. Miller, Charles A. Stuart, Michael H. Stone
Andy R. Dotterweich
The purpose of this investigation was to elucidate the changes in cf-DNA as it relates to fluctuations in resistance training workloads and intensities. The relationship between cell free DNA (cf-DNA), C-reactive protein (CRP), creatine kinase (CK), testosterone (T), cortisol (C), testosterone-cortisol ratio (T:C), body mass and body composition were also examined. Eight weightlifters (5 males and 3 females, age = 25 ± 3.5 yr, body mass = 88.3 ± 22.7 kg, height = 173.8 ±8.4 cm) volunteered to participate in this study. Venous blood samples, body mass and body composition were taken six times, each corresponding to the end of …
Preliminary Scale Of Reference Values For Evaluating Reactive Strength Index-Modified In Male And Female Ncaa Division I Athletes, Christopher J. Sole, Timothy J. Suchomel, Michael H. Stone
Preliminary Scale Of Reference Values For Evaluating Reactive Strength Index-Modified In Male And Female Ncaa Division I Athletes, Christopher J. Sole, Timothy J. Suchomel, Michael H. Stone
ETSU Faculty Works
The purpose of this analysis was to construct a preliminary scale of reference values for reactive strength index-modified (RSImod). Countermovement jump data from 151 National Collegiate Athletic Association (NCAA) Division I collegiate athletes (male n = 76; female n = 75) were analyzed. Using percentiles, scales for both male and female samples were constructed. For further analysis, athletes were separated into four performance groups based on RSImod and comparisons of jump height (JH), and time to takeoff (TTT) were performed. RSImod values ranged from 0.208 to 0.704 and 0.135 to 0.553 in males and females, respectively. Males had greater RSImod …
Maximum Strength, Rate Of Force Development, Jump Height, And Peak Power Alterations In Weightlifters Across Five Months Of Training, W. Guy Hornsby, Jeremy A. Gentles, Christopher J. Macdonald, Satoshi Mizuguchi, Michael W. Ramsey, Michael H. Stone
Maximum Strength, Rate Of Force Development, Jump Height, And Peak Power Alterations In Weightlifters Across Five Months Of Training, W. Guy Hornsby, Jeremy A. Gentles, Christopher J. Macdonald, Satoshi Mizuguchi, Michael W. Ramsey, Michael H. Stone
ETSU Faculty Works
The purpose of this monitoring study was to investigate how alterations in training affect changes in force-related characteristics and weightlifting performance. Subjects: Seven competitive weightlifters participated in the study. Methods: The weightlifters performed a block style periodized plan across 20 weeks. Force plate data from the isometric mid-thigh pull and static jumps with 0 kg, 11 kg, and 20 kg were collected near the end of each training block (weeks 1, 6, 10, 13, 17, and 20). Weightlifting performance was measured at weeks 0, 7, 11, and 20. Results: Very strong correlations were noted between weightlifting performances and isometric rate …
Cell Free Dna As A Marker Of Training Status In Weightlifters, Jeremy A. Gentles, William G. Hornsby, Christine L. Coniglio, Andy R. Dotterweich, Jon A. Miller, Charles A. Stuart, Michael H. Stone
Cell Free Dna As A Marker Of Training Status In Weightlifters, Jeremy A. Gentles, William G. Hornsby, Christine L. Coniglio, Andy R. Dotterweich, Jon A. Miller, Charles A. Stuart, Michael H. Stone
ETSU Faculty Works
The purpose of this investigation was to elucidate the changes in cf-DNA as it relates to fluctuations in resistance training workloads and intensities. The relationship between cell free DNA (cf-DNA), C-reactive protein (CRP), creatine kinase (CK), testosterone (T), cortisol (C), testosterone-cortisol ratio (T:C), body mass and body composition were also examined. Eight weightlifters (5 males and 3 females, age = 25 ± 3.5 yr, body mass = 88.3 ± 22.7 kg, height = 173.8 ±8.4 cm) volunteered to participate in this study. Venous blood samples, body mass and body composition were taken six times, each corresponding to the end of …