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Wagner, H., Hinz, M., Radic, V. “…However, the direct influence of this professional training on specific physical performance in team handball is unknown, despite its importance as a criterion for effective training in adolescent elite team handball. …”

Bauer, J., Muehlbauer, T., Geiger, S., Gruber, M. “…Many attempts have been made to assess the level of fatigue in athletes either by objective (neuromuscular performance) or subjective (questionnaires) measures, however, their interplay over short-, mid-, and long-term periods is currently unknown. Knowledge about both types of assessments is important as load management by coaches is traditionally based on direct adjustments following a training session, adjustments of content structure of training weeks between games, as well as adjustments of load management over the entire competitive season. …”

Wagner, H., Hinz, M. “…However, in elite team handball academies, general, unspecific tests are often used to determine this physical performance. It is unknown if these unspecific physical performance tests have an influence on the specific team handball performance, although this knowledge is essential for the selection process during adolescence or for young adults before transitioning to professional elite team handball. …”

Zech, A., Hollander, K., Junge, A., Steib, S., Groll, A., Heiner, J., Nowak, F., Pfeiffer, D., Rahlf, A. L. “…Although female sex is considered a risk factor, it is still unknown whether female and male team-sport players, in fact, differ in their injury rates. …”

Bache-Mathiesen, L. K. “…Unfortunately, how training load can be altered to achieve desired outcomes is unknown, because the relationship between training load and injury risk has proven difficult to study. …”

Soler-López, A., García-de-Alcaraz, A., Moreno-Villanueva, A., Pino-Ortega, J. “…Although there is a wide range of validated devices to measure vertical jump height, the degree of interchangeability among them is currently unknown. Aims: The purpose of this study was to examine the concurrent validity and reliability of multiple devices to measure jump height in men`s handball players. …”

Biermann, H., Theiner, J., Bassek, M., Raabe, D., Memmert, D., Ewerth, R. “…Yet, this validation step is usually neglected as the majority of studies adopt annotations from commercial providers on private datasets of unknown quality and focuses on soccer only. To address these issues, we present (1) a universal taxonomy that covers a wide range of low and high-level events for invasion games and is exemplarily refined to soccer and handball, and (2) release two multi-modal datasets comprising video and positional data with gold-standard annotations to foster research in fine-grained and ball-centered event spotting. …”

Vereijken, A., Aerts, I., Jetten, J., Tassignon, B., Verschueren, J., Meeusen, R., van Trijffel, E. “…Even though functional performance tests are often used to make return to sport decisions, it is unknown whether functional performance is associated with return to performance after such injuries. …”

Garcia-Lopez, D., Maroto-Izquierdo, S., Zarzuela, R., Martin-Santana, E., Antón, S., Sedano, S. “…This study aimed to investigate the influence of unknown additional eccentric loading (AEL) on bench-press kinematics (peak velocity, peak acceleration and accelerative percentage of the concentric phase) and muscle activation (pectoralis major and anterior deltoid) in professional rugby and handball players. …”

Bauer, P., Henni, S., Dörr, O., Bauer, T., Hamm, C. W., Most, A. “…Several studies have demonstrated vitamin D deficiency in professional athletes; however, the prevalence of vitamin D insufficiency in professional handball players is yet unknown. Methods: The study was planned as a prospective, non-interventional study. …”

Ageberg, E., Bunke, S., Lucander, K., Nilsen, P., Donaldson, A. “…Stakeholders (n = 196) of two community team handball clubs (29% players, 13% coaches, 38% caregivers, 11% club, district and national handball administrators, 9% unknown) participated in a brainstorming process. …”

Weber, J. “…In many studies, centre backs are not distinguished from the rest of the back players, the special issues of the lineplayers are not appropriately considered and the goalkeepers are trained like fieldplayers, while the claims for this position are unknown. Lineplayers are sometimes shunted to their position to keep young and inexperienced players away from the tactically important positions in the middle of the court. …”

Eriksrud, O., Sæland, F. O., Federolf, P. A., Cabri, J. “…The relationship between dynamic postural control, functional mobility and team handball throwing performance, velocity and accuracy, is largely unknown. The hand reach star excursion balance test (HSEBT) is a full kinetic chain assessment tool of these factors. …”

Molina-López, J., Planells, E. “…Although there has been an increase in nutrition research and exercise over the last decade, nutrition remains a largely unknown area in sports such as handball. There is little information on the nutritional habits of handball players at any level of the game. …”

Buchheit, M., Leblond, F., Buchheit, J., Renaud, C. “…Nevertheless, the distinct effects of a strength/speed (aimed at improving the first sprint or jump efforts) vs. sport-specific metabolic (aimed at improving the ability to repeat those efforts) training program are unknown. Aim.The aim of the present study was to compare the effect of supplementing usual technical/tactical handball training contents with a gym-based strength/speed (5) vs. small-sided handball games (SSG) (6) on high-intensity intermittent running capacity and repeated sprint and jump ability.…”

Silva, A. M., Matias, C. N., Santos, D. A., Thomas, D., Bosy-Westphal, A., Müller, M. J., Heymsfield, S. B., Sardinha, L. B. “…INTRODUCTION: Magnitude and variation in energy balance (EB) components over an athletic season are largely unknown. PURPOSE: We investigated the longitudinal changes in EB over one season and explored the association between EB variation and change in the main fat-free mass (FFM) components in highly trained athletes. …”

Hernandez-Davo, J. L., Sabido, R., Behm, D. G., Blazevich, A. J. “…The aims of this study were to compare both eccentric- and concentric-phase adaptations in highly-trained handball players to 4 weeks of twice-weekly rebound bench press throw training with varying loads (30%, 50% and 70% of 1-repetition maximum [1-RM]) using either known (KL) or unknown (UL) loads, and to examine the relationship between changes in eccentric- and concentric-phase performance. …”

Popp Marin, D., de Cassia Macedo dos Santos, R., Bolin, A. P., Alves Guerra, B., Hatanaka, E., Otton, R. “…However, the oxidative stress responses following a handball game remain unknown. We investigated the responses of plasma and erythrocyte antioxidant system and oxidative stress biomarkers following a single handball game. …”

Sabido, R., Hernandez-Davo, J. L., Botella, J., Moya, M. “…Purpose: To compare the effect of 4-week unknown vs known loads strength training intervention on power output performance and throwing velocity in junior team handball players. …”

Schorer, J., Loffing, F., Lotz, S., Hagemann, N. “…They accomplished a shorter handball task (traditional German sport) and an additional cricket task (unknown sport in Germany) both with 24 video sequences. …”