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2,835 results on '"Kraemer, William"'

101. The Effects of a 10-Kilometer Run on Muscle Strength and Power.

Author

Gomez, Ana L., Radzwich, Robert J., Denegar, Craig R., Volek, Jeff S., Rubin, Martyn R., Bush, Jill A., Doan, Brandon K., Wickham, Robbin B., Mazzetti, Scott A., Newton, Robert U., French, Duncan N., Hakkinen, Keijo, Ratamess, Nicholas A., and Kraemer, William J.

Abstract

Investigated recovery of maximal force and power following a 10-km race. Data collected on 10 healthy male distance runners pre-race, immediately post-race, and 48 hours later indicated that strength and power capabilities of these 10-km runners were for the most part restored 48 hours after the race. Only the hamstring muscle group was not fully recovered. (SM)

Published
2002

102. Safety Measures of L-Carnitine L-Tartrate Supplementation in Healthy Men.

Author

Rubin, Martyn R., Volek, Jeff S., Gomez, Ana L., Ratamess, Nicholas A., French, Duncan N., Sharman, Matthew J., and Kraemer, William J.

Abstract

Examined the effects of ingesting the dietary supplement L- CARNIPURE on liver and renal function and blood hematology among healthy men. Analysis of blood samples indicated that there were no statistically significant differences between the L-CARNIPURE and placebo conditions for any variables examined, suggesting there are no safety concerns when ingesting 3g of L-CARNIPURE. (SM)

Published
2001

103. Changes of Hydration Measures in Elite National Collegiate Athletic Association Division I Wrestlers.

Author

Borden, Emily C., Kraemer, William J., Walrod, Bryant J., Post, Emily M., Caldwell, Lydia K., Beeler, Matthew K., DuPont, William H., Anders, John Paul, Martini, Emily R., Volek, Jeff S., and Maresh, Carl M.

Subjects
BIOMARKERS, BLOOD testing, BODY weight, HYDRATION, INFORMED consent (Medical law), HEALTH policy, STATURE, THIRST, URINALYSIS, WRESTLING, VISUAL analog scale, OSMOLAR concentration
Abstract

Purpose: To evaluate the changes in the state of hydration in elite National Collegiate Athletic Association (NCAA) Division I college wrestlers during and after a season. Methods: Ohio State University wrestling team members (N = 6; mean [SD] age = 19.6 [1.1] y; height = 171.6 [2.9] cm: body mass = 69.5 [8.1] kg) gave informed consent to participate in the investigation with measurements (ie, body mass, urine-specific gravity [USG; 2 methods]. Visual Analog Scale thirst scale, plasma osmolality) obtained during and after the season. Results: Measurements for USG, regardless of methods, were not significantly different between visits, but plasma osmolality was significantly (P=. 001) higher at the beginning of the season--295.5 (4.9) mOsm·kg-1 compared with 279.6 (6.1) mOsm· kg-1 after the season. No changes in thirst ratings were observed, and the 2 measures of USG were highly correlated (r > .9, P= .000) at each time point, but USG and plasma osmolality were not related. Conclusions: A paradox in the clinical interpretation of euhydration in the beginning of the season was observed with the USG, indicating that the wrestlers were properly hydrated, while the plasma osmolality showed they were not. Thus, the tracking of hydration status during the season is a concern when using only NCAA policies and procedures. The wrestlers did return to normal euhydration levels after the season on both biomarkers, which is remarkable, as previous studies have indicated that this may not happen because of the reregulation of the osmol-regulatory center in the brain. [ABSTRACT FROM AUTHOR]

Published
2019
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107. Effects of Upper Body Eccentric versus Concentric Strength Training and Detraining on Maximal Force, Muscle Activation, Hypertrophy and Serum Hormones in Women

Author

Häkkinen, Keijo, primary, Newton, Robert U., additional, Walker, Simon, additional, Häkkinen, Arja, additional, Krapi, Sonja, additional, Rekola, Rebekka, additional, Koponen, Päivi, additional, Kraemer, William J., additional, Haff, G. Gregory, additional, Blazevich, Anthony J., additional, Nosaka, Kazunori, additional, and Ahtiainen, Juha, additional

Published
2022
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114. Skeletal Muscle Gene Expression In Elite Ultra-endurance Athletes Habitually Consuming Very Low-carbohydrate or High-carbohydrate Diets: 1445 Board #98 June 2, 9: 00 AM - 10: 30 AM

Author

Saenz, Catherine, Freidenreich, Daniel J., Kunces, Laura J., Bartley, Jenna M., Creighton, Brent C., Aerni, Giselle A., Anderson, Jeffrey M., Davitt, Patrick M., Munoz, Colleen X., Lee, Elaine C., Opiyo, Stephen O., Maresh, Carl M., Kraemer, William J., and Volek, Jeff S.

Published
2016
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118. Strength Training for Young Athletes.

Author

Kraemer, William J., Fleck, Steven J., Kraemer, William J., and Fleck, Steven J.

Abstract

This guide is designed to serve as a resource for developing strength training programs for children. Chapter 1 uses research findings to explain why strength training is appropriate for children. Chapter 2 explains some of the important physiological concepts involved in children's growth and development as they apply to developing strength training programs. Chapter 3 describes the concerns that should be addressed when developing a child's strength training program. Chapter 4 explains the specific components of program design, and chapter 5 explains how to teach resistance exercises to children. In Chapter 6 more than 100 resistance exercises are explained and illustrated; the exercise descriptions, grouped according to the body part that is strengthened, include starting position, movement, spotting and safety, and specification of muscles strengthened. Chapter 7 incorporates the exercises into basic training programs for 16 different sports and activities. Each chapter contains a reference list of additional readings. A glossary of strength training terms is included. (ND)

Published
1993

119. The role of strength and power during performance of high intensity military tasks under heavy load carriage

Author

Mala, Jesse, Szivak, Tunde K., Flanagan, Shawn D., Comstock, Brett A., Laferrier, Justin Z., Maresh, Carl M., and Kraemer, William J.

Subjects
Usage, Analysis, Health aspects, Soldiers -- Health aspects, Body armor -- Usage, Military operations -- Analysis
Abstract

Throughout history, load carriage has been shown to be an essential aspect of soldiering during military operations. During training and on the battlefield, Warfighters are required to carry various loads [...]

Published
2015

124. Trans-American Travel within NCAA Regulations Induces Jet Lag which Attenuates Sleep Quality and Athletic Performance: 2987 Board #302 May 29, 3: 30 PM - 5: 00 PM

Author

Hooper, David R., Secola, Paul J., Dulkis, Lexie L., Dupont, William H., Saenz, Cathy, Kupchak, Brian R., Szivak, Tunde K., Comstock, Brett A., Flanagan, Shawn D., Looney, David P., Pryor, J. Luke, Kalkowski, Ryan J., Luk, Hui-Ying, Beaudette, Tori L., Thurston, Taylor S., Galpin, Andrew J., Volek, Jeff S., Maresh, Carl M., Brown, Lee E., and Kraemer, William J.

Published
2015
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128. Resting And Endurance Exercise-induced Testosterone Responses In Elite Ultra-runners Habitually Consuming Low-carbohydrate And High-carbohydrate Diets: 311 Board #162 May 27, 11: 00 AM - 12: 30 PM

Author

Saenz, Catherine, Freidenreich, Daniel J., Kunces, Laura J., Bartley, Jenna M., Creighton, Brent C., Hooper, David R., Munoz, Colleen X., Davitt, Patrick M., Aerni, Giselle A., Anderson, Jeffrey M., Maresh, Carl M., Kraemer, William J., and Volek, Jeff S.

Published
2015
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136. Evidence of the Exercise-Hypogonadal Male Condition at the 2011 Kona Ironman World Championships.

Author

Hooper, David R., Kraemer, William J., Stearns, Rebecca L., Kupchak, Brian R., Volk, Brittanie M., DuPont, William H., Maresh, Carl M., and Casa, Douglas J.

Subjects
AEROBIC exercises, ATHLETIC ability, BODY weight, CONFIDENCE intervals, ENDURANCE sports, HYDROCORTISONE, HYPOGONADISM, MEN'S health, STATURE, TESTOSTERONE, SPORTS events, ELITE athletes, MALE athletes
Abstract

Purpose: Prior research has illustrated that high volumes of aerobic exercise result in a reduction in basal concentrations of testosterone in men. Those studies were mostly conducted on recreational runners and identified reduced testosterone, but not concentrations low enough to be considered pathological. Therefore, the purpose of this study was to assess the basal concentrations of testosterone and cortisol in elite triathletes, as well as the impact of a World Championship race, on the acute responses of these hormones. Methods: A total of 22 men (age 40.6 [11.5] y, height 179 [6] cm, weight 77.0 [7.0] kg) who participated in the 2011 Ironman World Championships served as subjects. Resting blood samples were taken 2–4 d prior to provide a baseline (BL), as well as immediately, 1 d, and 2 d after the event and were later analyzed for total testosterone and cortisol concentrations. Results: At BL, 9 men had a normal testosterone concentration, whereas 9 men fell within a "gray zone" and 4 other men demonstrated concentrations suggestive of deficiency. Testosterone was significantly lower than BL at 1 d (95% confidence interval [CI] 0.10–0.34, P <.001, ES = 0.53) and 2 d (95% CI 0.01–0.21, P =.034, ES = 0.35) after the event. Cortisol was significantly different from BL at immediate post (95% CI 1.07–0.83, P <.001, ES = 8.0). There were significant correlations between time and age (R =.68, P =.001), as well as BL testosterone and cortisol (R =.51, P =.015). Conclusion: Elite ultraendurance athletes may demonstrate not only reduced testosterone but also sometimes clinically low concentrations that could be indicative of androgen deficiency. [ABSTRACT FROM AUTHOR]

Published
2019
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144. Inaugural MSK Medicine Module: An innovative multidisciplinary medical education model

Author

Zywiel, Michael G., primary, Sathiyamoorthy, Thrmiga, additional, Archibald, Doug, additional, Kraemer, William, additional, Alman, Benjamin, additional, Ferguson, Peter, additional, Simor, Andrew, additional, Mendoza, Roberto, additional, Bruno, Tania, additional, Sangha, Harpreet Singh, additional, McDonald-Blumer, Heather, additional, Bookman, Arthur, additional, Josse, Robert, additional, Norris, Erin, additional, Elliot-Gibson, Victoria, additional, Howard, Andrew, additional, Flannery, John, additional, Nousiainen, Markku, additional, and Wadey, Veronica, additional

Published
2021
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