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CORRELATIONS BETWEEN PHYSIOLOGICAL VARIABLES AND PERFORMANCE IN HIGH LEVEL CROSS COUNTRY OFF ROAD CYCLISTS.
Impellizzeri FM, Marcora SM, Rampinini E, Mognoni P, Sassi A.

OBJECTIVES: To examine the relations between maximal and submaximal indices ofaerobic fitness and off road cycling performance in a homogeneous group of highlevel mountain bikers. METHODS: 12 internationally competitive mountain bikerscompleted the study. Maximum oxygen uptake (Vo(2max)), peak power output (PPO),power output (PO), and oxygen uptake (Vo(2)) at first (VT) and second (RCT)ventilatory thresholds were measured in the laboratory, and correlated with racetime during a cross country circuit race. RESULTS: The only physiologicalindices of aerobic fitness correlated with off road cycling performance were POand Vo(2) at RCT when normalised to body mass (r = -0.63 and r = -0.66,respectively; p<0.05). VT, Vo(2max), and PPO were not correlated to performancein this homogeneous group of high level mountain bikers. CONCLUSIONS: Theresults of this study suggest that submaximal indices of aerobic fitness such asPO and Vo(2) at RCT are more important determinants of off road cyclingperformance than maximal indices such as PPO and Vo(2max). This study confirmsthe importance of body mass for mountain biking performance. As aerobic fitnessexplained only 40% of the variance, other physiological and technical factorsshould be investigated, as they may be important determinants of cross countryperformance among elite mountain bikers.

Br J Sports Med. 2005 Oct;39(10):747-51.
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EFFECTS OF INTERMITTENT-ENDURANCE FITNESS ON MATCH PERFORMANCE IN YOUNG MALE SOCCER PLAYERS.
HIGH-INTENSITY TRAINING IN FOOTBALL.
GLYCEMIC INDEX IN SPORT NUTRITION
EFFECTS OF GRADIENT AND SPEED ON FREELY CHOSEN CADENCE: THE KEY ROLE OF CRANK INERTIAL LOAD
EFFECTS OF AEROBIC TRAINING ON THE EXERCISE-INDUCED DECLINE IN SHORT-PASSING ABILITY IN JUNIOR SOCCER PLAYERS.
AGEING AND PHYSICAL MATCH PERFORMANCE IN ENGLISH PREMIER LEAGUE SOCCER REFEREES.
SEASONAL CHANGES IN AEROBIC FITNESS INDICES IN ELITE CYCLISTS.
EFFECT OF MATCH-RELATED FATIGUE ON SHORT-PASSING ABILITY IN YOUNG SOCCER PLAYERS
VALIDITY OF A REPEATED-SPRINT TEST FOR FOOTBALL.
LEVEL GROUND AND UPHILL CYCLING ABILITY IN ELITE FEMALE MOUNTAIN BIKERS AND ROAD CYCLISTS
TECHNICAL PERFORMANCE DURING SOCCER MATCHES OF THE ITALIAN SERIE A LEAGUE: EFFECT OF FATIGUE AND COMPETITIVE LEVEL
EFFECT OF PLYOMETRIC TRAINING ON SAND VERSUS GRASS ON MUSCLE SORENESS AND JUMPING AND SPRINTING ABILITY IN SOCCER PLAYERS.
SPRINT VS. INTERVAL TRAINING IN FOOTBALL.
RELIABILITY OF ISOKINETIC STRENGTH IMBALANCE RATIOS MEASURED USING THE CYBEX NORM DYNAMOMETER
HEART RATE AND BLOOD LACTATE CORRELATES OF PERCEIVED EXERTION DURING SMALL-SIDED SOCCER GAMES
VARIATION IN TOP LEVEL SOCCER MATCH PERFORMANCE.
A VERTICAL JUMP FORCE TEST FOR ASSESSING BILATERAL STRENGTH ASYMMETRY IN
THE YO-YO INTERMITTENT RECOVERY TEST IN BASKETBALL PLAYERS
FACTORS INFLUENCING PHYSIOLOGICAL RESPONSES TO SMALL-SIDED SOCCER GAMES
VALIDITY OF SIMPLE FIELD TESTS AS INDICATORS OF MATCH-RELATED PHYSICAL PERFORMANCE IN TOP-LEVEL PROFESSIONAL SOCCER PLAYERS
THE PHYSIOLOGY OF MOUNTAIN BIKING
ANALYSIS OF PHYSICAL MATCH PERFORMANCE IN ENGLISH PREMIER LEAGUE SOCCER REFEREES WITH PARTICULAR REFERENCE TO FIRST HALF AND PLAYER WORK RATES.
RELATIONSHIP BETWEEN PUSH PHASE AND FINAL RACE TIME IN SKELETON PERFORMANCE
CARDIOVASCULAR RESPONSES DURING RECREATIONAL 5-A-SIDE INDOOR-SOCCER
PHYSIOLOGICAL AND PERFORMANCE EFFECTS OF GENERIC VERSUS SPECIFIC AEROBIC TRAINING IN SOCCER PLAYERS.
PREDICTION OF TIME TO EXHAUSTION FROM BLOOD LACTATE RESPONSE DURING SUBMAXIMAL EXERCISE IN COMPETITIVE CYCLISTS.
CARDIORESPIRATORY RESPONSES TO YO-YO INTERMITTENT ENDURANCE TEST IN NONELITE YOUTH SOCCER PLAYERS
AEROBIC FITNESS AND YO-YO CONTINUOUS AND INTERMITTENT TESTS PERFORMANCES IN SOCCER PLAYERS: A CORRELATION STUDY.
IS AEROBIC POWER REALLY CRITICAL FOR SUCCESS IN ALPINE SKIING?
CORRELATIONS BETWEEN PHYSIOLOGICAL VARIABLES AND PERFORMANCE IN HIGH LEVEL CROSS COUNTRY OFF ROAD CYCLISTS.
CARDIOVASCULAR RESPONSES TO AEROBIC STEP DANCE SESSIONS WITH AND WITHOUT APPENDICULAR OVERLOAD
ECOLOGICAL VALIDITY OF A REPEATED SPRINT ABILITY TEST AND ITS REPRODUCIBILITY IN SOCCER
VARIABLES INFLUENCING SOCCER-SPECIFIC EXERCISE INTENSITY
PHYSIOLOGY OF OFF-ROAD CYCLING
PHYSIOLOGICAL ASSESSMENT OF AEROBIC TRAINING IN SOCCER.
PHYSIOLOGICAL CORRELATES TO OFF-ROAD CYCLING PERFORMANCE.
ESTIMATION OF THE INDIVIDUAL POWER-TIME TO EXHAUSTION RELATIONSHIP
THE ENERGY EXPENDITURE OF AN OCCUPATIONAL, PHYSICAL ACTIVITY: TILE LAYING
THE ASSESSMENT OF LOWER LIMBS BILATERAL STRENGTH IMBALANCE USING VERTICAL JUMPS ON FORCE PLATFORM
A COMPARISON OF SMALL-SIDED GAMES AND INTERVAL TRAINING
USE OF RPE-BASED TRAINING LOAD IN SOCCER.
RELIABILITY OF HEART RATE RECORDED DURING SOCCER TRAINING
SOCCER PERFORMANCE: RELATIONSHIP WITH OPPONENT
PLASMA ACTH RESPONSE TO EXHAUSTIVE EXERCISE IN OVERTRAINED PROFESSIONAL CYCLISTS
MONITORING TRAINING LOAD IN ITALIAN FOOTBALL
MLSS DOES NOT CORRESPOND TO THE MAXIMAL RATE OF LACTATE ELIMINATION
ECONOMY DIFFERENCES AMONG HIGH LEVEL RACE WALKERS
A SIMPLE PREDICTION OF THE EXHAUSTION TIME DURING SUBMAXIMAL CYCLING
VALIDITY OF A SUBMAXIMAL RUNNING TEST TO EVALUATE AEROBIC FITNESS CHANGES IN SOCCER PLAYERS
EXERCISE INTENSITY DURING OFF-CYCLING COMPETITIONS.