NIRSで得られた [HHb] ブレイクポイントの比較と,速度および斜面に基づくインクリメンタル走行試験における乳酸値との一致
Thiago Pereira Ventura1, Fernando Klitzke Borszcz2,3,4, Rafael Alves de Aguiar5
1Federal University of Santa Catarina, Sports Center, Florianopolis, SC, Brazil; thiagopereiraventura@gmail.com.
まとめ
斜面での走行は,速度ベースのテストとは異なる方法で筋肉の脱酸素化と生理学的値に影響します. デオキシヘモグロビンブレイクポイント (HHb-BP) と乳酸値 (LT) は,試験方法によって異なるため,周辺応答における傾斜の重要性を強調しています.
科学分野:
- 運動生理学 運動生理学
- スポーツ科学 スポーツ科学
- 筋肉生理学 筋肉生理学
背景:
- 以前の研究では,平面走行と斜面走行に対する生理学的反応を調査した.
- 筋肉の脱酸素化に対する斜面の特定の影響と,生理学的値との関係は,まだ十分に研究されていない.
- これらの関係を理解することは,様々な走行条件下でトレーニングとパフォーマンスを最適化するために不可欠です.
研究 の 目的:
- デオキシヘモグロビンブレイクポイント (HHb-BP) を傾斜ベースと速度ベースのインクリメンタルランニングテストで比較する.
- 両試験プロトコルにおけるHHb-BPと第2乳酸値 (LT2) の間の一致性を評価する.
- 外部生理学的値に対する試験方法の影響を調査する.
主な方法:
- 15人のレクリエーション・トレイルランナーが,スピードベース (固定1%の傾き) と傾きベース (固定速度,上昇傾き) の2つの段階的な走行テストを受けました.
- 心肺呼吸器変数,血中乳酸,胃筋の脱酸素化 (近赤外線スペクトロスコーピーを用いて) を測定した.
- 分析は,HHb-BP,第1乳酸値 (LT1),第2乳酸値 (LT2) を特定し,そのV̇O2maxとの関係に焦点を当てた.
主要な成果:
- 傾きベースのテストは,速度ベースのテストと比較して,HHb-BP,LT1,LT2の%V̇O2max値が高くなりました.
- スピードベースのテストでは,HHb-BPはLT2よりも低い強度で発生し,合意が悪かった.
- 斜面ベースのテストでは,HHb-BPとLT2の間に有意な差は観察されず,よりよい合意を示しました.
結論:
- 筋肉の脱酸素化値 (HHb-BP) は,斜面走行中に相対的に高い強度 (%V̇O2max) で発生する.
- HHb-BP と LT2 の間の合意は,方法に依存しており,斜面ベースのプロトコルでよりよい一致性があります.
- これらの発見は,辺縁の生理学的反応に対する傾斜の有意な影響と,運動の値の決定におけるテスト方法論の重要な役割を強調しています.
関連する概念動画
Multiple Comparison Tests
4.5K
Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
4.5K
Deriving the Speed of Sound in a Liquid
982
As with waves on a string, the speed of sound or a mechanical wave in a fluid depends on the fluid's elastic modulus and inertia. The two relevant physical quantities are the bulk modulus and the density of the material. Indeed, it turns out that the relationship between speed and the bulk modulus and density in fluids is the same as that between the speed and the Young's modulus and density in solids.
The speed of sound in fluids can be derived by considering a mechanical wave...
The speed of sound in fluids can be derived by considering a mechanical wave...
982
Kendall's Coefficient of Concordance
1.0K
Kendall's Coefficient of Concordance (W), also known as Kendall's W, is a non-parametric statistical measure used to assess the agreement or concordance between multiple raters or judges when they rank a set of items. It is often used when you have ordinal data (ranks) and you want to see if there is consistency or consensus among the raters. It is widely applied in research areas such as psychology, medicine, and social sciences, where multiple judges are asked to rank or rate subjects...
1.0K
Wald-Wolfowitz Runs Test II
565
The Wald-Wolfowitz runs test, commonly referred to as the runs test, is a nonparametric test used to assess the randomness of ordered data. The test evaluates the number of runs, which are consecutive sequences of similar elements within the data. If the number of runs is significantly higher or lower than expected, the data is considered non-random, indicating a detectable pattern or structure.
For binary data, runs are identified using symbols such as + and −, or equivalently, 1s and 0s. In...
For binary data, runs are identified using symbols such as + and −, or equivalently, 1s and 0s. In...
565
The Sense of Self: Reflected Self-Appraisal and Social Comparison
56.2K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
56.2K
Wald-Wolfowitz Runs Test I
972
The Wald-Wolfowitz test, also known as the runs test, is a nonparametric statistical test used to assess the randomness of a sequence of two different types of elements (e.g., positive/negative values, successes/failures). It examines whether the order of the elements in a sequence is random or if there is a pattern or trend present. This nonparametric test applies to any ordered data despite the population and sample data distribution, even if a higher sample size is available.
The test works...
The test works...
972


