Helgard Claassen

1.3k total citations
9 papers, 1.0k citations indexed

About

Helgard Claassen is a scholar working on Complementary and alternative medicine, Cell Biology and Surgery. According to data from OpenAlex, Helgard Claassen has authored 9 papers receiving a total of 1.0k indexed citations (citations by other indexed papers that have themselves been cited), including 4 papers in Complementary and alternative medicine, 3 papers in Cell Biology and 2 papers in Surgery. Recurrent topics in Helgard Claassen's work include Cardiovascular and exercise physiology (4 papers), Muscle metabolism and nutrition (3 papers) and Sports Performance and Training (2 papers). Helgard Claassen is often cited by papers focused on Cardiovascular and exercise physiology (4 papers), Muscle metabolism and nutrition (3 papers) and Sports Performance and Training (2 papers). Helgard Claassen collaborates with scholars based in Switzerland, United States and Canada. Helgard Claassen's co-authors include Hans Hoppeler, H. Howald, Ewald R. Weibel, Odile Mathieu, Reto Straub, C. Richard Taylor, Stan L. Lindstedt, David Wu, Jean‐Michel Weber and R. Billeter and has published in prestigious journals such as Kidney International, Journal of Experimental Biology and Pflügers Archiv - European Journal of Physiology.

In The Last Decade

Helgard Claassen

9 papers receiving 993 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Helgard Claassen Switzerland	8	446	353	329	198	184	9	1.0k
A. H. Sillau United States	19	376 0.8×	226 0.6×	270 0.8×	73 0.4×	107 0.6×	35	947
J. A. McLane United States	10	382 0.9×	395 1.1×	202 0.6×	175 0.9×	323 1.8×	16	948
S. R. Kayar Switzerland	15	319 0.7×	221 0.6×	243 0.7×	103 0.5×	155 0.8×	16	858
Toomas Tiivel Estonia	15	467 1.0×	261 0.7×	1.0k 3.1×	87 0.4×	205 1.1×	20	1.5k
M. E. Everts Netherlands	21	275 0.6×	139 0.4×	695 2.1×	76 0.4×	173 0.9×	47	1.3k
George A. Ordway United States	11	568 1.3×	540 1.5×	622 1.9×	54 0.3×	97 0.5×	18	1.4k
G. W. Mainwood Canada	15	154 0.3×	273 0.8×	264 0.8×	184 0.9×	292 1.6×	47	948
H. Hoppeler Switzerland	17	658 1.5×	525 1.5×	469 1.4×	548 2.8×	535 2.9×	35	1.8k
Joan Ramón Torrella Spain	22	354 0.8×	116 0.3×	334 1.0×	89 0.4×	138 0.8×	71	1.3k
Richard A. Howlett United States	27	928 2.1×	707 2.0×	605 1.8×	355 1.8×	771 4.2×	48	2.1k

Countries citing papers authored by Helgard Claassen

Since Specialization

Citations

This map shows the geographic impact of Helgard Claassen'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 Helgard Claassen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Helgard Claassen more than expected).

Fields of papers citing papers by Helgard Claassen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Helgard Claassen. 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 Helgard Claassen. The network helps show where Helgard Claassen may publish in the future.

Co-authorship network of co-authors of Helgard Claassen

This figure shows the co-authorship network connecting the top 25 collaborators of Helgard Claassen. A scholar is included among the top collaborators of Helgard Claassen 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 Helgard Claassen. Helgard Claassen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

9 of 9 papers shown

Flück, Martin, Stephanie Kasper, Paola Valdivieso, et al.. (2018). Knee Extensors Muscle Plasticity Over a 5-Years Rehabilitation Process After Open Knee Surgery. Frontiers in Physiology. 9. 1343–1343. 15 indexed citations

Vock, Ruth, Hans Hoppeler, Helgard Claassen, et al.. (1996). Design of the Oxygen and Substrate Pathways: VI. Structural Basis of Intracellular Substrate Supply to Mitochondria in Muscle Cells. Journal of Experimental Biology. 199(8). 1689–1697. 87 indexed citations

Hoppeler, Hans, O Hudlická, E. Uhlmann, & Helgard Claassen. (1992). Skeletal Muscle Adaptations to Ischemia and Severe Exercise. Clinical Journal of Sport Medicine. 2(1). 43–51. 6 indexed citations

Horber, Fritz, Hans Hoppeler, Daniel B. Herren, et al.. (1986). Altered skeletal muscle ultrastructure in renal transplant patients on prednisone. Kidney International. 30(3). 411–416. 50 indexed citations

Howald, H., Hans Hoppeler, Helgard Claassen, Odile Mathieu, & Reto Straub. (1985). Influences of endurance training on the ultrastructural composition of the different muscle fiber types in humans. Pflügers Archiv - European Journal of Physiology. 403(4). 369–376. 324 indexed citations

Hoppeler, Hans, Stan L. Lindstedt, Helgard Claassen, et al.. (1984). Scaling mitochondrial volume in heart to body mass. Respiration Physiology. 55(2). 131–137. 73 indexed citations

Gehr, Peter, et al.. (1980). The lung of shrews: Morphometric estimation of diffusion capacity. Respiration Physiology. 40(1). 33–47. 50 indexed citations

Mathieu, Odile, Helgard Claassen, & Ewald R. Weibel. (1978). Differential effect of glutaraldehyde and buffer osmolarity on cell dimensions: A study on lung tissue. Journal of Ultrastructure Research. 63(1). 20–34. 80 indexed citations

Hoppeler, Hans, et al.. (1973). The ultrastructure of the normal human skeletal muscle. Pflügers Archiv - European Journal of Physiology. 344(3). 217–232. 351 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.

Explore authors with similar magnitude of impact