DOI: 10.1055/s-00000028

International Journal of Sports Medicine

Issue 13 · Volume 40 · December 2019 DOI: 10.1055/s-009-44906

Editorial

813
Harriss, D.J.; MacSween, A.; Atkinson, G.: Ethical Standards in Sport and Exercise Science Research: 2020 Update

Physiology & Biochemistry

818
Maylor, Benjamin D.; Zakrzewski-Fruer, Julia K.; Stensel, David J.; Orton, Charlie J.; Bailey, Daniel P.: Effects of Frequency and Duration of Interrupting Sitting on Cardiometabolic Risk Markers

Training & Testing

825
Kraak, Wilbur; Coetzee, Lize; Kruger, Anika; Stewart, Reeco; Vuuren, Hanno van: Knowledge and Attitudes Towards Concussion in Western Province Rugby Union Senior Club Rugby Players
831
DʼOttavio, Stefano; Briotti, Gianluca; Rosazza, Cristina; Partipilo, Filippo; Silvestri, Adriano; Calabrese, Cosimo; Bernardini, Andrea; Gabrielli, Paolo Roberto; Ruscello, Bruno: Effects of Two Modalities of Whole-body Electrostimulation Programs and Resistance Circuit Training on Strength and Power
842
Romance, Ramón; Vargas, Salvador; Espinar, Sergio; Petro, Jorge L.; Bonilla, Diego A.; Schöenfeld, Brad J.; Kreider, Richard B.; Benítez-Porres, Javier: Oral Contraceptive Use does not Negatively Affect Body Composition and Strength Adaptations in Trained Women
850
Ribeiro, Alex S.; dos Santos, Erick D.; Nunes, João Pedro; Schoenfeld, Brad J.: Acute Effects of Different Training Loads on Affective Responses in Resistance-trained Men

Clinical Sciences

856
Herm, Juliane; Haeusler, Karl Georg; Kunze, Claudia; Krüll, Matthias; Brechtel, Lars; Lock, Jürgen; Heuschmann, Peter U.; Haverkamp, Wilhelm; Heekeren, Hauke; Liman, Thomas; Endres, Matthias; Fiebach, Jochen B.; Jungehulsing, Gerhard Jan: MRI Brain Changes After Marathon Running: Results of the Berlin Beat of Running Study

Orthopedics & Biomechanics

863
Peng, Hsien-Te; Song, Chen-Yi; Wallace, Brian J.; Kernozek, Thomas W.; Wang, Min-Hsien; Wang, Yu-Han: Effects of Relative Drop Heights of Drop Jump Biomechanics in Male Volleyball Players
871
Charalambous, Laura H.; Champion, Rachael B.; Smith, Lindsey R.; Mitchell, Andrew C. S.; Bailey, Daniel P.: Effects of Interrupting Sitting with Use of a Treadmill Desk Versus Prolonged Sitting on Postural Stability