Publications by authors named "A Niess"

Objectives: The primary aim of this study was to investigate the effects of low energy availability on different performance outcomes in male athletes. Secondary aims were to examine an assumed dose-response relationship and identify knowledge gaps.

Design: Scoping review.

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Objective: This study aimed to identify potential changes in cardiorespiratory fitness among athletes who had previously been infected with SARS-CoV-2.

Methods: In this prospective observational multicenter hybrid study (CoSmo-S), cardiopulmonary exercise testing on treadmills or bicycle ergometers involving 2314 athletes (39.6% female) was conducted.

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Introduction: Short educational programs prior to metabolic and bariatric surgery (MBS) provide information to prepare patients adequately for surgery and subsequent changes. Our knowledge of the beneficial effects of these programs on stabilizing and improving mental health of patients with obesity awaiting surgery is incomplete. The objective of this study was to assess the effects of a group-based educational program before MBS on three key factors: (i) patients' mental health, (ii) the program's perceived helpfulness from the patients' perspective, and (iii) the effectiveness of delivering the program online via videoconferencing.

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Little is known about physical activity (PA) and sedentary behavior (SB) among nursing home residents although PA is known as a health promoter. This study examined PA, SB, and their predictors among nursing home residents (n = 63). Dependent variables were accelerometry-based PA and SB.

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A better understanding of the cellular and molecular mechanisms that are involved in skeletal muscle adaptation to exercise is fundamentally important to take full advantage of the enormous benefits that exercise training offers in disease prevention and therapy. The aim of this study was to elucidate the transcriptional signatures that distinguish the endurance-trained and untrained muscles in young adult males (24 ± 3.5 years).

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