DOI: 10.1055/s-00000028

International Journal of Sports Medicine

Issue 10 · Volume 42 · September 2021 DOI: 10.1055/s-011-51902

Review

863
Piper, Thomas; Geyer, Hans; Haenelt, Nadine; Huelsemann, Frank; Schaenzer, Wilhelm; Thevis, Mario: Current Insights into the Steroidal Module of the Athlete Biological Passport
Open Access
879
Ganse, Bergita; Degens, Hans: Current Insights in the Age-related Decline in Sports Performance of the Older Athlete

Physiology & Biochemistry

889
Rosa, Thiago dos Santos; Corrêa, Hugo Luca; Barbosa, Lucas Pinheiro; Santos, Patrick Anderson dos; Leite, Patrício Lopes de Araújo; Aguiar, Samuel Silva; Deus, Lysleine Alves; Maciel, Larissa Alves; Neves, Rodrigo Vanerson Passos; Simoes, Herbert Gustavo: Age-related Decline in Renal Function is Attenuated in Master Athletes

Training & Testing

896
Padrón-Cabo, Alexis; Lorenzo-Martínez, Miguel; Pérez-Ferreirós, Alexandra; Costa, Pablo B.; Rey, Ezequiel: Effects of Plyometric Training with Agility Ladder on Physical Fitness in Youth Soccer Players
905
Rodrigo-Carranza, Víctor; González-Mohíno, Fernando; Turner, Anthony P.; Rodriguez-Barbero, Sergio; González-Ravé, José María: Using a Portable Near-infrared Spectroscopy Device to Estimate The Second Ventilatory Threshold
911
Manson, Sarah A.; Low, Cody; Legg, Hayley; Patterson, Stephen D.; Meylan, César: Vertical Force-velocity Profiling and Relationship to Sprinting in Elite Female Soccer Players
917
Rampinini, Ermanno; Donghi, Federico; Martin, Marco; Bosio, Andrea; Riggio, Marco; Maffiuletti, Nicola A.: Impact of COVID-19 Lockdown on Serie A Soccer Players’ Physical Qualities
930
Stokes, Keith A.; Cross, Matthew; Williams, Sean; McKay, Carly; Hagel, Brent E.; West, Stephen W.; Roberts, Simon Paul; Sant’Anna, Ricardo T.; Morrison, Edward; Kemp, Simon: Padded Headgear does not Reduce the Incidence of Match Concussions in Professional Men’s Rugby Union: A Case-control Study of 417 Cases

Clinical Sciences

924
Soares-Miranda, Luisa; Lucia, Alejandro; Silva, Marco; Peixoto, Armando; Ramalho, Rosa; da Silva, Pedro Correia; Mota, Jorge; Macedo, Guilherme; Abreu, Sandra: Physical Fitness and Health-related Quality of Life in Patients with Colorectal Cancer
936
Lasocka, Zofia; Dąbrowska-Kugacka, Alicja; Kaleta, Anna Maria; Lewicka-Potocka, Zuzanna; Faran, Anna; Szołkiewicz, Ewa; Przybyłowski, Krystian; Szołkiewicz, Alicja; Daniluk, Paulina; Raczak, Grzegorz; Lewicka, Ewa: Electrocardiographic Changes in Male and Female Amateur Marathon Runners: A Comparison Study

Orthopedics & Biomechanics

945
Noro, Hiroaki; Miyamoto, Naokazu; Mitsukawa, Naotoshi; Yanagiya, Toshio: No Association of Plantar Aponeurosis Stiffness with Medial Longitudinal Arch Stiffness