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Özdalyan F, Çene E, Gümüş H, Açıkgöz O. Investigation of the effect of circadian rhythm on the performances of NBA teams. Chronobiol Int 2024; 41:599-608. [PMID: 38689400 DOI: 10.1080/07420528.2024.2325641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Accepted: 02/26/2024] [Indexed: 05/02/2024]
Abstract
Professional athletes competing in the NBA are frequently exposed to time-zone-shifting travels. These time zone changes may cause circadian rhythm (CR) phase shifts and these shifts affect sportive performance. The aim of this study was to investigate the effects of CR phase shifts on the performance of NBA teams. 25016 regular season games across 21 consecutive seasons were included in the CR phase shift calculations. To examine the CR phase shift effect on team performance, teams were divided into three groups regarding Coordinated Universal Time (UTC): the same internal UTC as the local UTC (LS); the internal UTC ahead of the local UTC (LA); and the internal UTC behind the local UTC (LB). With a different approach, teams were divided into another three categories: the same internal UTC as its opponent's internal UTC (OS); the internal UTC ahead of its opponent's internal UTC (OA); and the internal UTC behind its opponent's internal UTC (OB). 24985 game data were used to compare these groups in terms of 25 variables. Statistical analyses were conducted separately for home and away teams. For home games, it was found that LA and OA are the most and LB is the least successful group in winning and scoring performances. For away games, it was determined that LS is the most advantageous group with the best winning percentage. These results revealed that teams from more west may have a CR advantage in regular season home games. However, it is thought that the performance of away teams depends more on travel fatigue than CR phase shifts.
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Affiliation(s)
- Fırat Özdalyan
- Department of Physiology, Dokuz Eylul University, Izmir, Turkiye
- Department of Physical Education and Sports Teaching, Dokuz Eylul University, Izmir, Turkiye
| | - Erhan Çene
- Department of Statistics, Yildiz Technical University, Istanbul, Turkiye
| | - Hikmet Gümüş
- Department of Coaching Education, Dokuz Eylul University, Izmir, Turkiye
| | - Osman Açıkgöz
- Department of Physiology, Dokuz Eylul University, Izmir, Turkiye
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Anderson T, Adams WM, Burns GT, Post EG, Baumann S, Clark E, Cogan K, Finnoff JT. Addressing Circadian Disruptions in Visually Impaired Paralympic Athletes. Int J Sports Physiol Perform 2024; 19:212-218. [PMID: 38168013 DOI: 10.1123/ijspp.2023-0267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/27/2023] [Accepted: 11/27/2023] [Indexed: 01/05/2024]
Abstract
PURPOSE Transmeridian travel is common for elite athletes participating in competitions and training. However, this travel can lead to circadian misalignment wherein the internal biological clock becomes desynchronized with the light-dark cycle of the new environment, resulting in performance decrement and potential negative health consequences. Existing literature extensively discusses recommendations for managing jet lag, predominantly emphasizing light-based interventions to synchronize the internal clock with the anticipated time at the destination. Nevertheless, visually impaired (VI) athletes may lack photoreceptiveness, diminishing or nullifying the effectiveness of this therapy. Consequently, this invited commentary explores alternative strategies for addressing jet lag in VI athletes. CONCLUSIONS VI athletes with light perception but reduced visual acuity or visual fields may still benefit from light interventions in managing jet lag. However, VI athletes lacking a conscious perception of light should rely on gradual shifts in behavioral factors, such as meal timing and exercise, to facilitate the entrainment of circadian rhythms to the destination time. Furthermore, interventions like melatonin supplementation may prove useful during and after travel. In addition, it is recommended that athlete guides adopt phase-forward or phase-back approaches to synchronize with the athlete, aiding in jet-lag management and optimizing performance.
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Affiliation(s)
- Travis Anderson
- Department of Sports Medicine, United States Olympic & Paralympic Committee, Colorado Springs, CO, USA
- United States Coalition for the Prevention of Illness and Injury in Sport, Colorado Springs, CO, USA
| | - William M Adams
- Department of Sports Medicine, United States Olympic & Paralympic Committee, Colorado Springs, CO, USA
- United States Coalition for the Prevention of Illness and Injury in Sport, Colorado Springs, CO, USA
- School of Sport, Exercise and Health Sciences, Loughborough University, Leicestershire, United Kingdom
- Department of Kinesiology, University of North Carolina at Greensboro, Greensboro, NC, USA
| | - Geoffrey T Burns
- Department of Para & Internal Sports, United States Olympic and Paralympic Committee, Colorado Springs, CO, USA
- School of Kinesiology, University of Michigan, Ann Arbor, MI, USA
| | - Eric G Post
- Department of Sports Medicine, United States Olympic & Paralympic Committee, Colorado Springs, CO, USA
- United States Coalition for the Prevention of Illness and Injury in Sport, Colorado Springs, CO, USA
| | - Sally Baumann
- Department of Para & Internal Sports, United States Olympic and Paralympic Committee, Colorado Springs, CO, USA
| | - Emily Clark
- Department of Sports Medicine, United States Olympic & Paralympic Committee, Colorado Springs, CO, USA
- United States Coalition for the Prevention of Illness and Injury in Sport, Colorado Springs, CO, USA
| | - Karen Cogan
- Department of Sports Medicine, United States Olympic & Paralympic Committee, Colorado Springs, CO, USA
- United States Coalition for the Prevention of Illness and Injury in Sport, Colorado Springs, CO, USA
| | - Jonathan T Finnoff
- Department of Sports Medicine, United States Olympic & Paralympic Committee, Colorado Springs, CO, USA
- United States Coalition for the Prevention of Illness and Injury in Sport, Colorado Springs, CO, USA
- Department of Physical Medicine and Rehabilitation, University of Colorado, Aurora, CO, USA
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LaGoy AD, Kubala AG, Deering S, Germain A, Markwald RR. Dawn of a New Dawn: Advances in Sleep Health to Optimize Performance. Sleep Med Clin 2023; 18:361-371. [PMID: 37532375 DOI: 10.1016/j.jsmc.2023.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
Abstract
Optimal sleep health is a critical component to high-level performance. In populations such as the military, public service (eg, firefighters), and health care, achieving optimal sleep health is difficult and subsequently deficiencies in sleep health may lead to performance decrements. However, advances in sleep monitoring technologies and mitigation strategies for poor sleep health show promise for further ecological scientific investigation within these populations. The current review briefly outlines the relationship between sleep health and performance as well as current advances in behavioral and technological approaches to improving sleep health for performance.
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Affiliation(s)
- Alice D LaGoy
- Sleep, Tactical Efficiency, and Endurance Laboratory, Warfighter Performance Department, Naval Health Research Center, 140 Sylvester Road, San Diego, CA 92106, USA; Leidos, Inc., San Diego, CA, USA
| | - Andrew G Kubala
- Sleep, Tactical Efficiency, and Endurance Laboratory, Warfighter Performance Department, Naval Health Research Center, 140 Sylvester Road, San Diego, CA 92106, USA; Leidos, Inc., San Diego, CA, USA
| | - Sean Deering
- Sleep, Tactical Efficiency, and Endurance Laboratory, Warfighter Performance Department, Naval Health Research Center, 140 Sylvester Road, San Diego, CA 92106, USA; Leidos, Inc., San Diego, CA, USA
| | | | - Rachel R Markwald
- Sleep, Tactical Efficiency, and Endurance Laboratory, Warfighter Performance Department, Naval Health Research Center, 140 Sylvester Road, San Diego, CA 92106, USA.
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