Effect of a four-week isocaloric ketogenic diet on physical performance at very high-altitude: a pilot study

Table 5 Effect of ICKD on performance parameters

Type	Nr	VO₂max	P_LT and HR_LT	P_peak	Remark
Positive effect of ICKD	6;8	↑	↑	↑	ICKD conferred improvement regarding endurance and peak performance parameters
	1;2	↑	↓	↑	ICKD had positive effects despite a decrease in LT parameter values. Indeed, P_peak and VO₂max confirmed a benefit
Negative effect of ICKD	4	↓	↑	↓	ICKD conferred little to no response. UD and ICKD values for performance tests can be considered equal
Non-assessable	3	↓	↓	↓	Clear worsening of test performance

ICKD isocaloric ketogenic diet, UD usual mixed Western-style diet, VO₂max maximal oxygen uptake (ml min⁻¹ kg⁻¹), P_LT power at lactate threshold (W), P_peak peak power (W), HR_LT heart rate at lactate threshold (beat min⁻¹), Nr. subject number

ISSN: 2052-1847