Dalarna University's logo and link to the university's website

du.sePublications
Change search
Link to record
Permanent link

Direct link
Carlsson, Magnus
Publications (10 of 21) Show all publications
Carlsson, T., Fjordell, W., Wedholm, L., Swarén, M. & Carlsson, M. (2022). The Modern Double-Poling Technique Is Not More Energy Efficient Than the Old-Fashioned Double-Poling Technique at a Submaximal Work Intensity. Frontiers in Sports and Active Living, 4, Article ID 850541.
Open this publication in new window or tab >>The Modern Double-Poling Technique Is Not More Energy Efficient Than the Old-Fashioned Double-Poling Technique at a Submaximal Work Intensity
Show others...
2022 (English)In: Frontiers in Sports and Active Living, E-ISSN 2624-9367, Vol. 4, article id 850541Article in journal (Refereed) Published
Abstract [en]

The purpose of the study was to investigate whether there are energy-efficiency differences between the execution of the old-fashioned double-poling technique (DPOLD) and the modern double-poling technique (DPMOD) at a submaximal work intensity among elite male cross-country skiers. Fifteen elite male cross-country skiers completed two 4-min tests at a constant mechanical work rate (MWR) using the DPMOD and DPOLD. During the last minute of each test, the mean oxygen uptake (VO2) and respiratory exchange ratio (RER) were analyzed, from which the metabolic rate (MR) and gross efficiency (GE) were calculated. In addition, the difference between pretest and posttest blood-lactate concentrations (BLadiff) was determined. For each technique, skiers’ joint angles (i.e., heel, ankle, knee, hip, shoulder, and elbow) were analyzed at the highest and lowest positions during the double-poling cycle. Paired-samples t-tests were used to investigate differences between DPMOD and DPOLD outcomes. There were no significant differences in either VO2mean, MR, GE, or BLadiff (all P > 0.05) between the DPMOD and DPOLD tests. DPMOD execution was associated with a higher RER (P < 0.05). Significant technique-specific differences were found in either the highest and/or the lowest position for all six analyzed joint angles (all P < 0.001). Hence, despite decades of double-poling technique development, which is reflected in the significant biomechanical differences between DPOLD and DPMOD execution, at submaximal work intensity, the modern technique is not more energy efficient than the old-fashioned technique. 

Keywords
cross-country skiing, gross efficiency, oxygen uptake, blood lactate concentration, biomechanical analysis, kinematics, double poling
National Category
Sport and Fitness Sciences
Identifiers
urn:nbn:se:du-41451 (URN)10.3389/fspor.2022.850541 (DOI)000804997800001 ()35663501 (PubMedID)2-s2.0-85131534228 (Scopus ID)
Available from: 2022-05-18 Created: 2022-05-18 Last updated: 2023-03-17Bibliographically approved
Högman, M., Wedholm, L., Carlsson, T., Carlsson, M. & Tonkonogi, M. (2021). Differences in nitric oxide airway diffusion after maximum oxygen uptake test in asthmatic and nonasthmatic elite junior cross-country skiers. ERJ Open Research, 7(1), Article ID 00378-2020.
Open this publication in new window or tab >>Differences in nitric oxide airway diffusion after maximum oxygen uptake test in asthmatic and nonasthmatic elite junior cross-country skiers
Show others...
2021 (English)In: ERJ Open Research, E-ISSN 2312-0541, Vol. 7, no 1, article id 00378-2020Article in journal (Refereed) Published
Abstract [en]

Asthma is common in cross-country skiers and is often treated with ß2-agonists and inhaled corticosteroids (ICS). Exhaled nitric oxide is often used to guide ICS treatment in asthma. This study investigated the change in the pulmonary NO dynamics before and after a maximum oxygen uptake (V̇O2-max) test.An extended NO analysis was performed among Swedish elite junior cross-country skiers (n=25), with and without declared asthma, before and after a V̇O2-max test using roller skis. Asthma was declared by six boys and two girls among whom five occasionally used ICS.There were no differences in the baseline NO parameters between those with and without declared asthma. The diffusion capacity over airway wall (DawNO) was 21 (17,25) mL·s−1 (median, quartiles), which is much increased for this age group. After the V̇O2-max test, there were statistically significant differences from the baseline fraction of exhaled nitric oxide (FENO50), NO-flux from airways, DawNO and alveolar NO values; but not in the NO content in airway wall (CawNO) for all subjects together as one group. However, in the asthma group, differences were only seen in the FENO50 and in CawNO.Interestingly, a majority of the subjects had an increase in the DawNO. An increase in DawNO has been found with allergic asthma together with elevated CawNO. The skiers did not have elevated CawNO, which indicates an absence of inflammation in the airway wall. Modelling of lung NO production clearly shows that the asthma among our skiers is distinct from the allergic asthma in non-athletes.

National Category
Respiratory Medicine and Allergy Sport and Fitness Sciences
Identifiers
urn:nbn:se:du-36254 (URN)10.1183/23120541.00378-2020 (DOI)000642370600010 ()33748263 (PubMedID)2-s2.0-85111734332 (Scopus ID)
Available from: 2021-03-02 Created: 2021-03-02 Last updated: 2023-04-14Bibliographically approved
Carlsson, T., Wedholm, L., Fjordell, W., Swarén, M. & Carlsson, M. (2021). Effect of sub‑technique transitions on energy expenditure and physiological load in the classical‑style technique among elite male cross‑country skiers. European Journal of Applied Physiology, 121(11), 3201-3209
Open this publication in new window or tab >>Effect of sub‑technique transitions on energy expenditure and physiological load in the classical‑style technique among elite male cross‑country skiers
Show others...
2021 (English)In: European Journal of Applied Physiology, ISSN 1439-6319, E-ISSN 1439-6327, Vol. 121, no 11, p. 3201-3209Article in journal (Refereed) Published
National Category
Sport and Fitness Sciences
Identifiers
urn:nbn:se:du-37972 (URN)10.1007/s00421-021-04783-5 (DOI)000685747400001 ()34402986 (PubMedID)2-s2.0-85112683012 (Scopus ID)
Available from: 2021-08-25 Created: 2021-08-25 Last updated: 2023-04-14Bibliographically approved
Högman, M., Wedholm, L., Carlsson, T., Carlsson, M. & Tonkonogi, M. (2021). Längdskidåkare med eller utan astmadiagnos har ökad diffusion för NO från luftrören. In: : . Paper presented at Svenska Lungkongressen, 4-6 maj 2021, Umeå, virtuell konferens.
Open this publication in new window or tab >>Längdskidåkare med eller utan astmadiagnos har ökad diffusion för NO från luftrören
Show others...
2021 (Swedish)Conference paper, Oral presentation with published abstract (Refereed)
National Category
Sport and Fitness Sciences
Identifiers
urn:nbn:se:du-42852 (URN)
Conference
Svenska Lungkongressen, 4-6 maj 2021, Umeå, virtuell konferens
Available from: 2022-10-17 Created: 2022-10-17 Last updated: 2023-03-17Bibliographically approved
Carlsson, M., Wahrenberg, V., Carlsson, M. S., Andersson, R. & Carlsson, T. (2020). Gross and delta efficiencies during uphill running and cycling among elite triathletes.. European Journal of Applied Physiology, 120(5), 961-968
Open this publication in new window or tab >>Gross and delta efficiencies during uphill running and cycling among elite triathletes.
Show others...
2020 (English)In: European Journal of Applied Physiology, ISSN 1439-6319, E-ISSN 1439-6327, Vol. 120, no 5, p. 961-968Article in journal (Refereed) Published
Abstract [en]

PURPOSE: To investigate the gross efficiency (GE) and delta efficiency (DE) during cycling and running in elite triathletes.

METHODS: Five male and five female elite triathletes completed two incremental treadmill tests with an inclination of 2.5° to determine their GE and DE during cycling and running. The speed increments between the 5-min stages were 2.4 and 0.6 km h-1 during the cycling and running tests, respectively. For each test, GE was calculated as the ratio between the mechanical work rate (MWR) and the metabolic rate (MR) at an intensity corresponding to a net increase in blood-lactate concentration of 1 mmol l-1. DE was calculated by dividing the delta increase in MWR by the delta increase in MR for each test. Pearson correlations and paired-sample t tests were used to investigate the relationships and differences, respectively.

RESULTS: There was a correlation between GEcycle and GErun (r = 0.66; P = 0.038; R2 = 0.44), but the correlation between DEcycle and DErun was not statistically significant (r = - 0.045; P = 0.90; R2 = 0.0020). There were differences between GEcycle and GErun (t = 80.8; P < 0.001) as well as between DEcycle and DErun (t = 27.8; P < 0.001).

CONCLUSIONS: Elite triathletes with high GE during running also have high GE during cycling, when exercising at a treadmill inclination of 2.5°. For a moderate uphill incline, elite triathletes are more energy efficient during cycling than during running, independent of work rate.

Keywords
Cycling economy, Incline, Mechanical work rate, Metabolic rate, Running economy, Triathlon
National Category
Sport and Fitness Sciences
Research subject
Research Profiles 2009-2020, Health and Welfare
Identifiers
urn:nbn:se:du-32401 (URN)10.1007/s00421-020-04312-w (DOI)000522690800001 ()32236753 (PubMedID)2-s2.0-85083092415 (Scopus ID)
Available from: 2020-04-08 Created: 2020-04-08 Last updated: 2021-11-12
Högman, M., Wedholm, L., Carlsson, T., Carlsson, M. & Tonkonogi, M. (2020). Skiers with or without asthma have increased airway diffusion rate of NO from the airways. European Respiratory Journal, 56, Article ID 2410.
Open this publication in new window or tab >>Skiers with or without asthma have increased airway diffusion rate of NO from the airways
Show others...
2020 (English)In: European Respiratory Journal, ISSN 0903-1936, E-ISSN 1399-3003, Vol. 56, article id 2410Article in journal, Meeting abstract (Other academic) Published
Keywords
Asthma - management, Asthma - diagnosis, Nitric oxide
National Category
Respiratory Medicine and Allergy
Research subject
Research Profiles 2009-2020, Health and Welfare
Identifiers
urn:nbn:se:du-36794 (URN)10.1183/13993003.congress-2020.2410 (DOI)000606501404402 ()
Available from: 2021-05-06 Created: 2021-05-06 Last updated: 2021-11-12Bibliographically approved
Högman, M., Wedholm, L., Carlsson, T., Carlsson, M. & Tonkonogi, M. (2020). Skiers with or without asthma have increased airway diffusion rate of NO from the airways. In: : . Paper presented at European Respiratory Society International Congress, 7-9 september, 2020.
Open this publication in new window or tab >>Skiers with or without asthma have increased airway diffusion rate of NO from the airways
Show others...
2020 (English)Conference paper, Oral presentation with published abstract (Refereed)
National Category
Health Sciences
Research subject
Research Profiles 2009-2020, Health and Welfare
Identifiers
urn:nbn:se:du-33871 (URN)
Conference
European Respiratory Society International Congress, 7-9 september, 2020
Available from: 2020-06-13 Created: 2020-06-13 Last updated: 2021-11-12Bibliographically approved
Carlsson, T., Berglez, J., Koivisto Persson, S. & Carlsson, M. (2020). The impact of video review in karate kumite during a Premier League competition. International Journal of Performance Analysis in Sport, 20(5), 846-856
Open this publication in new window or tab >>The impact of video review in karate kumite during a Premier League competition
2020 (English)In: International Journal of Performance Analysis in Sport, ISSN 2474-8668, E-ISSN 1474-8185, Vol. 20, no 5, p. 846-856Article in journal (Refereed) Published
National Category
Sport and Fitness Sciences
Research subject
Research Profiles 2009-2020, Health and Welfare
Identifiers
urn:nbn:se:du-34611 (URN)10.1080/24748668.2020.1794258 (DOI)000550087500001 ()2-s2.0-85088253402 (Scopus ID)
Available from: 2020-07-23 Created: 2020-07-23 Last updated: 2023-10-04Bibliographically approved
Carlsson, M., Isberg, J., Nilsson, J. & Carlsson, T. (2019). The acute effects of a short technique-intense training period on side-foot kick performance among elite female soccer players. Journal of Sports Medicine and Physical Fitness, 59(9), 1442-1449
Open this publication in new window or tab >>The acute effects of a short technique-intense training period on side-foot kick performance among elite female soccer players
2019 (English)In: Journal of Sports Medicine and Physical Fitness, ISSN 0022-4707, E-ISSN 1827-1928, Vol. 59, no 9, p. 1442-1449Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Previously, it was shown that elite soccer teams were 24% more likely to win matches if their passing effectiveness were increased by 1%. However, research interventions aiming to improve passing performance are scarce. The current study aimed to investigate the effect of a short technique-intense training period on side-foot kick performance among elite female soccer players.

METHODS: Four side-foot kick tests were completed before and after a training period: kicking a stationary ball using match-relevant (SBRS) and maximal ball speed (SBMS), passing the ball on the move using match-relevant ball speed (RBRS), and repeated side-foot kicks onto a rebound-box with continuously increasing passing distance (RRB). The players were assigned to either the intervention group or the control group. The training intervention consisted of six 55-min training sessions with five side-foot kick exercises. Within-group and between-group differences were investigated using paired-samples t-test and Mann-Whitney U test, respectively.

RESULTS: The intervention group improved the performance in the RBRS and RRB tests (both P < 0.05), but no differences were found for the SBRS and SBMS tests (both P > 0.05). No improvements were found for the control group independent of test condition (all P > 0.05). Significant between-group differences were found for the RBRS and RRB tests (both P < 0.05), whereas no differences were found for the SBRS and SBMS tests (both P > 0.05).

CONCLUSIONS: The fundamental soccer skill of passing a moving ball was improved in elite female soccer players by a short technique-intense training period.

National Category
Sport and Fitness Sciences
Research subject
Research Profiles 2009-2020, Health and Welfare; Research Profiles 2009-2020, Health and Welfare
Identifiers
urn:nbn:se:du-29527 (URN)10.23736/S0022-4707.19.09449-0 (DOI)000490249900002 ()30761813 (PubMedID)2-s2.0-85073175864 (Scopus ID)
Available from: 2019-02-19 Created: 2019-02-19 Last updated: 2021-11-12Bibliographically approved
Carlsson, M., Nilsson, J., Hellström, J., Tinmark, F. & Carlsson, T. (2019). The effect of ball temperature on ball speed and carry distance in golf drives. Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 233(2), 186-192
Open this publication in new window or tab >>The effect of ball temperature on ball speed and carry distance in golf drives
Show others...
2019 (English)In: Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, ISSN 1754-3371, Vol. 233, no 2, p. 186-192Article in journal (Refereed) Published
Abstract [en]

The purpose of this study was to investigate the effect of ball temperature on impact ball speed and carry distance during golf drives in a blind randomized test design. The balls were exposed to a temperature-controlled environment (4 °C, 18 °C, 32 °C, and 46 °C) for 24 h prior to the test and each temperature group consisted of 30 balls. The 120 drives were performed by an elite male golfer (handicap: 0.0) in an indoor driving range. All drives were measured by a Doppler-radar system to determine the club-head speed, launch angle, spin rate, ball speed, and carry distance. Differences between the groups were investigated using a one-way analysis of variance. The results indicated that ball-speed and carry-distance differences occurred within the four groups (p < 0.001 and p < 0.01, respectively). The post hoc analyses showed that the ball temperatures of 18 °C and 32 °C had greater ball speeds and carry distances than balls at 4 °C and 46 °C (all p < 0.05). The intervals for the between-group differences were 0.6–0.7 m s−1 and 2.9–3.9 m for ball speed and carry distance, respectively. Hence, the results showed that ball temperature influences both the ball speed and the carry distance. Based on the findings in this study, standardization of ball temperature should be factored into governing body regulation tests for golf equipment.

Keywords
Golf ball, club-head speed, carry distance, ball speed, ball temperature, launch angle, spin rate, Doppler radar
National Category
Sport and Fitness Sciences
Research subject
Research Profiles 2009-2020, Health and Welfare
Identifiers
urn:nbn:se:du-28803 (URN)10.1177/1754337118812618 (DOI)000469879800002 ()2-s2.0-85059043849 (Scopus ID)
Available from: 2018-10-20 Created: 2018-10-20 Last updated: 2021-11-12Bibliographically approved
Organisations

Search in DiVA

Show all publications