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Titel:

INDOOR ENDURANCE EXERCISE PROVOKES HIGHER AEROSOL PARTICLE EMISSION AND POSES A HIGHER RISK OF INFECTION THAN RESISTANCE EXERCISE

Dokumenttyp:
Konferenzbeitrag
Autor(en):
SCHÖNFELDER, M., SCHUMM, B., HEIBER, M., GRÄTZ, F., STABILE, L., BUONANNO, G., HAIN, R., KÄHLER, C.J., WACKERHAGE, H.
Seitenangaben Beitrag:
653
Abstract:
INTRODUCTION: Pathogens such as severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2), influenza, and rhinoviruses are transmitted by airborne aerosol respiratory particles that are exhaled by infectious subjects. We have previously reported that the emission of aerosol particles increases on average 132-fold from rest to maximal endurance exercise [1]. The aims of this study are to first measure aerosol particle emission during an isokinetic resistance exercise at 80% of the maximal voluntary contraction until exhaustion, second to compare aerosol particle emission during a typical spinning class session versus a three-set resistance training session. Finally, we then used this data to calculate the risk of infection during endurance and resistance exercise sessions with different mitigation strategies. METHODS: We recruited 24 healthy participants (age: 21 to 37 years): eight of them for the endurance training session, eight for a resistance training, and eight for an isokinetic resistance training. In each training setting, we included four women and four men. The BMI of the participants ranged between 20.7 kg/m2 and 37 kg/m2 in the resistance exercise groups due to high muscle mass. In the endurance exercise group, the BMI ranged from 20.7 kg/m2 to 26.5 kg/m2. To measure ventilation and particle emission we coupled a spiroergometry device (Metalyzer; Cortex Medical™) with a particle counter (Palas Promo 3000 with Welas 2300 sensor, Palas GmbH) in a closed system. All measurements were performed in a clean air tent with reduced aerosol particle concentration (<150 particles/L compared to >30,000 particles/L in the ambient air). The airspace in the tent was flooded with cleaned air (H14 filter quality), and subjects directly inhale filtered air. RESULTS: During a set of isokinetic resistance exercise, aerosol particle emission increased 10-fold from 5,400 ± 1,200 particles/min at rest to 59,000 ± 69,900 particles/min during a set of resistance exercise. We found that aerosol particle emission per minute is on average 4.9-times lower during a resistance training session than during a spinning class. Using this data, we determined that the simulated infection risk increase during an endurance exercise session was sixfold higher than during a resistance exercise session when assuming one infected participant in the class. CONCLUSION: Collectively, this data helps to select mitigation measures for indoor resistance and endurance exercise classes at times where the risk of aerosol-transmitted infectious disease with severe outcomes is high. Even though exercise seems to impose a higher risk of getting infected, exercise holds many health benefits and should not simply be avoided. Thus, during periods with many consequential infections, the first focus should be to, for example, limit the number of people in endurance exercise classes, and increase the air exchange rate of the facility. References: (1) Mutsch et al. (2022), PNAS
Dewey-Dezimalklassifikation:
610 Medizin und Gesundheit
Herausgeber:
European College of Sport Science
Kongress- / Buchtitel:
Book of Abstracts of the 28th Annual Congress of the European College of Sport Science, 4 – 7 July 2023
Ausrichter der Konferenz:
European College of Sport Science
Datum der Konferenz:
4 – 7 July 2023
Verlag / Institution:
European College of Sport Science
Publikationsdatum:
04.07.2023
Jahr:
2023
Quartal:
2. Quartal
Jahr / Monat:
2023-07
Monat:
Jul
Seiten:
1
Print-ISBN:
978-3-9818414-6-6
Reviewed:
ja
Sprache:
en
Erscheinungsform:
WWW
WWW:
https://www.ecss.mobi/DATA/CONGRESSES/PARIS_2023/DOCUMENTS/BOA_Paris_2023_Web.pdf
Semester:
SS 23
TUM Einrichtung:
Sportbiologie
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