Karl E. Friedl

12.0k total citations · 2 hit papers
179 papers, 6.1k citations indexed

About

Karl E. Friedl is a scholar working on Physiology, Occupational Therapy and Orthopedics and Sports Medicine. According to data from OpenAlex, Karl E. Friedl has authored 179 papers receiving a total of 6.1k indexed citations (citations by other indexed papers that have themselves been cited), including 77 papers in Physiology, 71 papers in Occupational Therapy and 34 papers in Orthopedics and Sports Medicine. Recurrent topics in Karl E. Friedl's work include Occupational Health and Performance (71 papers), Body Composition Measurement Techniques (35 papers) and Sports Performance and Training (26 papers). Karl E. Friedl is often cited by papers focused on Occupational Health and Performance (71 papers), Body Composition Measurement Techniques (35 papers) and Sports Performance and Training (26 papers). Karl E. Friedl collaborates with scholars based in United States, Canada and Norway. Karl E. Friedl's co-authors include Stephen R. Plymate, Robert E. Jones, Louis A. Matej, Reed W. Hoyt, L. J. Marchitelli, Katherine M. Flegal, Robert J. Moore, Bradley C. Nindl, Louis J. Marchitelli and Peter Frykman and has published in prestigious journals such as Journal of Clinical Oncology, American Journal of Clinical Nutrition and The Journal of Clinical Endocrinology & Metabolism.

In The Last Decade

Karl E. Friedl

169 papers receiving 5.8k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Inhibition of Sex Hormone-Binding Globulin Production in the Human Hepatoma (Hep G2) Cell Line by Insulin and Prolactin*

1988 601 citations Karl E. Friedl et al. profile →
Development of bioelectrical impedance analysis prediction equations for body composition with the use of a multicomponent model for use in epidemiologic surveys

2003 518 citations Karl E. Friedl, Van S. Hubbard et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Karl E. Friedl United States	41	2.2k	1.2k	1.2k	1.1k	920	179	6.1k
Linda S. Pescatello United States	54	5.4k 2.4×	256 0.2×	2.5k 2.1×	754 0.7×	1.3k 1.4×	280	17.6k
Arthur Weltman United States	59	3.9k 1.7×	185 0.2×	3.1k 2.7×	2.3k 2.0×	1.7k 1.8×	320	10.7k
N. Timothy Cable United Kingdom	60	3.4k 1.5×	139 0.1×	2.2k 1.9×	510 0.4×	702 0.8×	187	12.0k
Antonio Paoli Italy	44	4.7k 2.1×	106 0.1×	1.7k 1.5×	1.3k 1.1×	1.2k 1.3×	292	8.8k
Tommi Vasankari Finland	39	2.0k 0.9×	274 0.2×	1.2k 1.1×	359 0.3×	388 0.4×	264	5.8k
James S. Skinner United States	58	6.8k 3.0×	177 0.1×	2.9k 2.5×	1.9k 1.7×	1.9k 2.1×	216	16.0k
Jack H. Wilmore United States	69	7.2k 3.2×	357 0.3×	4.9k 4.3×	1.8k 1.6×	2.8k 3.0×	309	17.4k
Martine Duclos France	39	2.0k 0.9×	144 0.1×	1.6k 1.3×	732 0.6×	722 0.8×	270	6.2k
Alessandro Sartório Italy	42	2.2k 1.0×	91 0.1×	1.0k 0.9×	1.8k 1.5×	521 0.6×	370	7.3k
Scott Thomas Canada	49	1.8k 0.8×	203 0.2×	1.2k 1.0×	381 0.3×	446 0.5×	239	10.4k

Countries citing papers authored by Karl E. Friedl

Since Specialization

Citations

This map shows the geographic impact of Karl E. Friedl's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Karl E. Friedl with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Karl E. Friedl more than expected).

Fields of papers citing papers by Karl E. Friedl

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Karl E. Friedl. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Karl E. Friedl. The network helps show where Karl E. Friedl may publish in the future.

Co-authorship network of co-authors of Karl E. Friedl

This figure shows the co-authorship network connecting the top 25 collaborators of Karl E. Friedl. A scholar is included among the top collaborators of Karl E. Friedl based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Karl E. Friedl. Karl E. Friedl is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Williamson, James R., et al.. (2025). Estimating Visceral Adiposity From Wrist-Worn Accelerometry. IEEE Journal of Biomedical and Health Informatics. 30(1). 149–161.

Koltun, Kristen J., Mita Lovalekar, Brian J. Martin, et al.. (2025). Identifying a digital phenotype of allostatic load: association between allostatic load index score and wearable physiological response during military training. American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. 329(6). R946–R958.

Potter, Adam W., Leigh C. Ward, Christopher L. Chapman, et al.. (2025). Real-world assessment of Multi-Frequency Bioelectrical Impedance Analysis (MFBIA) for measuring body composition in healthy physically active populations. European Journal of Clinical Nutrition. 79(12). 1235–1244. 1 indexed citations

Pryor, J. Luke, Riana R. Pryor, Adam W. Potter, et al.. (2025). Female Energy Expenditure during Load Carriage in Thermal Environments. Medicine & Science in Sports & Exercise. 57(12). 2902–2910.

Koltun, Kristen J., Mita Lovalekar, Brian J. Martin, et al.. (2025). Association of allostatic load measured by allostatic load index on physical performance and psychological responses during arduous military training. Physiological Reports. 13(6). e70273–e70273. 4 indexed citations

Roberts, Brandon M., et al.. (2024). Antiobesity medications in active‐duty military personnel. Obesity. 32(10). 1797–1798. 2 indexed citations

Chapman, Christopher L., E. A. Schäfer, Adam W. Potter, et al.. (2024). Day-to-day reliability of basal heart rate and short-term and ultra short-term heart rate variability assessment by the Equivital eq02+ LifeMonitor in US Army soldiers. BMJ Military Health. 171(e1). e32–e37. 3 indexed citations

Looney, David P., Christopher L. Chapman, Riana R. Pryor, et al.. (2024). Reliability, biological variability, and accuracy of multi-frequency bioelectrical impedance analysis for measuring body composition components. Frontiers in Nutrition. 11. 1491931–1491931. 11 indexed citations

Potter, Adam W., et al.. (2023). Physical performance and body composition reference values for modern US Marine Corps women. BMJ Nutrition Prevention & Health. 6(2). 234–242. 3 indexed citations

10.

Norheim, Arne Johan, et al.. (2023). The classification of freezing cold injuries - a NATO research task group position paper. International Journal of Circumpolar Health. 82(1). 2203923–2203923. 5 indexed citations

11.

Kingma, Boris, et al.. (2023). We are all exposed, but some are more exposed than others. International Journal of Circumpolar Health. 82(1). 2199492–2199492. 5 indexed citations

12.

Friedl, Karl E., Henriette Hasselstrøm, Boris Kingma, et al.. (2023). Introduction: Training is more important than technology (for performance in the cold). International Journal of Circumpolar Health. 82(1). 2240572–2240572. 1 indexed citations

13.

Tharion, William J., et al.. (2022). Psychological and Sociological Profile of Women Who Have Completed Elite Military Combat Training. Armed Forces & Society. 49(3). 612–641. 10 indexed citations

14.

Haman, François, et al.. (2022). Human vulnerability and variability in the cold: Establishing individual risks for cold weather injuries. Temperature. 9(2). 158–195. 32 indexed citations

15.

Friedl, Karl E.. (2015). U.S. Army Research on Pharmacological Enhancement of Soldier Performance. The Journal of Strength and Conditioning Research. 29(Supplement 11). S71–S76. 12 indexed citations

16.

Srinivas, Pothur R., Martin A. Philbert, Tania Q. Vu, et al.. (2009). Nanotechnology Research: Applications in Nutritional Sciences. Journal of Nutrition. 140(1). 119–124. 83 indexed citations

17.

Deuster, Patricia A., et al.. (2007). Human Performance Optimization: An Evolving Charge to the Department of Defense. Military Medicine. 172(11). 1133–1137. 17 indexed citations

18.

McClung, James P., Louis J. Marchitelli, Karl E. Friedl, & Andrew Young. (2006). Prevalence of Iron Deficiency and Iron Deficiency Anemia among Three Populations of Female Military Personnel in the US Army. Journal of the American College of Nutrition. 25(1). 64–69. 81 indexed citations

19.

Friedl, Karl E.. (2000). Countermeasures for battlefield stressors. 6 indexed citations

20.

Colman, Lauren K., Bruce A. Porter, John Redmond, et al.. (1988). Early Diagnosis of Spinal Metastases by CT and MR Studies. Journal of Computer Assisted Tomography. 12(3). 423–426. 37 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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